Built 2026-10-19 (19 October 2026)

Valentia Observatory Weather Records (EI000003953)

Record envelope, standing records and threshold days for Valentia Observatory (EI000003953), Ireland, with 98 years of record.

Key Facts for Valentia Observatory

  • Valentia Observatory (EI000003953) is a weather station in Ireland at 51.94 latitude and -10.22 longitude, 9 m (30 ft) above sea level.
  • The station reports from 1929 to 2026, 98 years of record.
  • 1,464 records set at Valentia Observatory still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Valentia Observatory set an all-time record daily precipitation of 133.0 mm (5.2 in) on 9 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Ireland, 51.94 latitude, -10.22 longitude.
  • Elevation: 9 m (30 ft).
  • Period of record: 1929 to 2026, 98 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

6 days at or beyond a record
Daily record high and record low at Valentia Observatory, with 2026 drawn through them The band shows the record high and record low for each calendar day at Valentia Observatory. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -100102030 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Valentia Observatory. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Valentia Observatory, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.8 C (58.6 F)-7.2 C (19.0 F)12.4 C (54.3 F)-1.9 C (28.6 F)
Feb16.8 C (62.2 F)-7.3 C (18.9 F)13.3 C (55.9 F)-1.7 C (28.9 F)
Mar20.7 C (69.3 F)-5.1 C (22.8 F)18.8 C (65.8 F)0.8 C (33.4 F)
Apr24.5 C (76.1 F)-2.3 C (27.9 F)20.1 C (68.2 F)2.3 C (36.1 F)
May27.2 C (81.0 F)0.2 C (32.4 F)24.5 C (76.1 F)4.1 C (39.4 F)
Jun28.1 C (82.6 F)1.7 C (35.1 F)27.3 C (81.1 F)8.8 C (47.8 F)
Jul27.6 C (81.7 F)5.3 C (41.5 F)26.6 C (79.9 F)9.6 C (49.3 F)
Aug28.1 C (82.6 F)3.3 C (37.9 F)22.7 C (72.9 F)8.1 C (46.6 F)
Sep28.4 C (83.1 F)0.0 C (32.0 F)19.5 C (67.1 F)8.0 C (46.4 F)
Oct23.5 C (74.3 F)-2.2 C (28.0 F)18.1 C (64.6 F)6.8 C (44.2 F)
Nov19.8 C (67.6 F)-4.0 C (24.8 F)n/an/a
Dec15.7 C (60.3 F)-7.7 C (18.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Valentia Observatory by the year they were set 1,464 records at Valentia Observatory still stand. 1947 holds the most, with 38. 0102030401930: 121931: 111932: 141933: 161934: 61935: 41936: 51937: 91938: 91939: 201940: 161941: 111942: 221943: 71944: 121945: 221946: 131947: 381948: 301949: 211950: 231951: 101952: 201953: 151954: 81955: 181956: 131957: 211958: 91959: 221960: 61961: 141962: 221963: 231964: 81965: 221966: 121967: 61968: 141969: 191970: 111971: 151972: 231973: 81974: 161975: 131976: 221977: 101978: 201979: 201980: 201981: 181982: 71983: 251984: 201985: 201986: 301987: 161988: 131989: 211990: 111991: 221992: 221993: 131994: 131995: 371996: 111997: 281998: 201999: 92000: 112001: 82002: 92003: 152004: 172005: 132006: 142007: 152008: 132009: 162010: 252011: 182012: 132013: 192014: 72015: 92016: 82017: 52018: 92019: 82020: 32021: 42022: 22023: 102024: 112025: 282026: 171930194019501960197019801990200020102020
1,464 records at Valentia Observatory still stand. 1947 holds the most, with 38.
Standing records at Valentia Observatory by the year they were set
Year setStanding records
193012
193111
193214
193316
19346
19354
19365
19379
19389
193920
194016
194111
194222
19437
194412
194522
194613
194738
194830
194921
195023
195110
195220
195315
19548
195518
195613
195721
19589
195922
19606
196114
196222
196323
19648
196522
196612
19676
196814
196919
197011
197115
197223
19738
197416
197513
197622
197710
197820
197920
198020
198118
19827
198325
198420
198520
198630
198716
198813
198921
199011
199122
199222
199313
199413
199537
199611
199728
199820
19999
200011
20018
20029
200315
200417
200513
200614
200715
200813
200916
201025
201118
201213
201319
20147
20159
20168
20175
20189
20198
20203
20214
20222
202310
202411
202528
202617

All-Time Record Progression

14 new records
When Valentia Observatory set new all-time records 14 all-time records were set at Valentia Observatory between 28 December 1961 and 9 July 2026. Each dot is a new record. Record low maximum temperatureRecord low minimum temperatureRecord high maximum temperatureRecord daily precipitationRecord high minimum temperature28 December 1961: Record low maximum temperature 1.2 C (34.2 F)29 December 1962: Record low maximum temperature 1.1 C (34.0 F)17 February 1969: Record low minimum temperature -7.3 C (18.9 F)19 August 1976: Record high maximum temperature 27.3 C (81.1 F)26 August 1976: Record high maximum temperature 28.1 C (82.6 F)1 November 1980: Record daily precipitation 112.5 mm (4.4 in)9 July 1983: Record high minimum temperature 18.8 C (65.8 F)17 January 1985: Record low maximum temperature 0.5 C (32.9 F)13 January 1987: Record low maximum temperature -1.5 C (29.3 F)5 September 1991: Record high maximum temperature 28.4 C (83.1 F)4 August 1995: Record high minimum temperature 19.5 C (67.1 F)22 December 2010: Record low minimum temperature -7.7 C (18.1 F)22 July 2021: Record high minimum temperature 20.5 C (68.9 F)9 July 2026: Record daily precipitation 126.0 mm (5.0 in)197019801990200020102020
14 all-time records were set at Valentia Observatory between 28 December 1961 and 9 July 2026. Each dot is a new record.
When Valentia Observatory set new all-time records
DateKindDetail
1961-12-28Record low maximum temperatureRecord low maximum temperature 1.2 C (34.2 F)
1962-12-29Record low maximum temperatureRecord low maximum temperature 1.1 C (34.0 F)
1969-02-17Record low minimum temperatureRecord low minimum temperature -7.3 C (18.9 F)
1976-08-19Record high maximum temperatureRecord high maximum temperature 27.3 C (81.1 F)
1976-08-26Record high maximum temperatureRecord high maximum temperature 28.1 C (82.6 F)
1980-11-01Record daily precipitationRecord daily precipitation 112.5 mm (4.4 in)
1983-07-09Record high minimum temperatureRecord high minimum temperature 18.8 C (65.8 F)
1985-01-17Record low maximum temperatureRecord low maximum temperature 0.5 C (32.9 F)
1987-01-13Record low maximum temperatureRecord low maximum temperature -1.5 C (29.3 F)
1991-09-05Record high maximum temperatureRecord high maximum temperature 28.4 C (83.1 F)
1995-08-04Record high minimum temperatureRecord high minimum temperature 19.5 C (67.1 F)
2010-12-22Record low minimum temperatureRecord low minimum temperature -7.7 C (18.1 F)
2021-07-22Record high minimum temperatureRecord high minimum temperature 20.5 C (68.9 F)
2026-07-09Record daily precipitationRecord daily precipitation 126.0 mm (5.0 in)

Wettest Day of Each Month

Jul: 126.0 mm (5.0 in)
Record daily precipitation for each month at Valentia Observatory The wettest day on record for each calendar month at Valentia Observatory. The most was 126.0 mm (5.0 in) on 9 July 2026. 050100150 Jan: 51.0 mm (2.0 in), 24 January 1958 Jan Feb: 79.0 mm (3.1 in), 28 February 1955 Feb Mar: 48.6 mm (1.9 in), 20 March 1985 Mar Apr: 55.1 mm (2.2 in), 13 April 2003 Apr May: 47.2 mm (1.9 in), 21 May 1949 May Jun: 51.8 mm (2.0 in), 16 June 2009 Jun Jul: 126.0 mm (5.0 in), 9 July 2026 Jul Aug: 88.8 mm (3.5 in), 5 August 1986 Aug Sep: 94.3 mm (3.7 in), 18 September 1993 Sep Oct: 94.0 mm (3.7 in), 4 October 2016 Oct Nov: 112.5 mm (4.4 in), 1 November 1980 Nov Dec: 69.9 mm (2.8 in), 15 December 1983 Dec
The wettest day on record for each calendar month at Valentia Observatory. The most was 126.0 mm (5.0 in) on 9 July 2026.
Record daily precipitation for each month at Valentia Observatory
MonthRecord daily precipitation (mm)Date
Jan51.0 mm (2.0 in)24 January 1958
Feb79.0 mm (3.1 in)28 February 1955
Mar48.6 mm (1.9 in)20 March 1985
Apr55.1 mm (2.2 in)13 April 2003
May47.2 mm (1.9 in)21 May 1949
Jun51.8 mm (2.0 in)16 June 2009
Jul126.0 mm (5.0 in)9 July 2026
Aug88.8 mm (3.5 in)5 August 1986
Sep94.3 mm (3.7 in)18 September 1993
Oct94.0 mm (3.7 in)4 October 2016
Nov112.5 mm (4.4 in)1 November 1980
Dec69.9 mm (2.8 in)15 December 1983

Period of Record Coverage

1929 to 2026
Days with data per year at Valentia Observatory 97 years of record at Valentia Observatory, 1929 to 2026. 31 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936 and others. 1929: 54 of 365 days1930: 264 of 365 days1931: 265 of 365 days1932: 251 of 366 days1933: 258 of 365 days1934: 262 of 365 days1935: 267 of 365 days1936: 256 of 366 days1937: 245 of 365 days1938: 230 of 365 days1939: 194 of 365 days1941: 364 of 365 days1942: 361 of 365 days1943: 365 of 365 days1944: 365 of 366 days1945: 363 of 365 days1946: 362 of 365 days1947: 359 of 365 days1948: 364 of 366 days1949: 363 of 365 days1950: 364 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 364 of 365 days1954: 362 of 365 days1955: 362 of 365 days1956: 366 of 366 days1957: 364 of 365 days1958: 361 of 365 days1959: 365 of 365 days1960: 365 of 366 days1961: 364 of 365 days1962: 363 of 365 days1963: 364 of 365 days1964: 363 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 364 of 366 days1969: 363 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 362 of 365 days1974: 363 of 365 days1975: 365 of 365 days1976: 364 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 361 of 365 days1980: 363 of 366 days1981: 362 of 365 days1982: 362 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 361 of 365 days1986: 364 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 363 of 365 days1990: 360 of 365 days1991: 364 of 365 days1992: 363 of 366 days1993: 364 of 365 days1994: 360 of 365 days1995: 359 of 365 days1996: 363 of 366 days1997: 364 of 365 days1998: 363 of 365 days1999: 362 of 365 days2000: 320 of 366 days2001: 326 of 365 days2002: 317 of 365 days2003: 324 of 365 days2004: 337 of 366 days2005: 325 of 365 days2006: 323 of 365 days2007: 331 of 365 days2008: 329 of 366 days2009: 339 of 365 days2010: 341 of 365 days2011: 333 of 365 days2012: 320 of 366 days2013: 320 of 365 days2014: 330 of 365 days2015: 275 of 365 days2016: 31 of 366 days2017: 32 of 365 days2018: 53 of 365 days2019: 31 of 365 days2020: 37 of 366 days2021: 33 of 365 days2022: 127 of 365 days2023: 40 of 365 days2024: 32 of 366 days2025: 360 of 365 days2026: 274 of 365 days1935195019651980199520102025
97 years of record at Valentia Observatory, 1929 to 2026. 31 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936 and others.
Days with data per year at Valentia Observatory
YearDays with dataShare of yearComplete
19295415%No
193026472%No
193126573%No
193225169%No
193325871%No
193426272%No
193526773%No
193625670%No
193724567%No
193823063%No
193919453%No
1941364100%Yes
194236199%Yes
1943365100%Yes
1944365100%Yes
194536399%Yes
194636299%Yes
194735998%Yes
194836499%Yes
194936399%Yes
1950364100%Yes
1951364100%Yes
1952366100%Yes
1953364100%Yes
195436299%Yes
195536299%Yes
1956366100%Yes
1957364100%Yes
195836199%Yes
1959365100%Yes
1960365100%Yes
1961364100%Yes
196236399%Yes
1963364100%Yes
196436399%Yes
1965365100%Yes
1966365100%Yes
1967364100%Yes
196836499%Yes
196936399%Yes
1970364100%Yes
1971364100%Yes
1972365100%Yes
197336299%Yes
197436399%Yes
1975365100%Yes
197636499%Yes
1977364100%Yes
197836399%Yes
197936199%Yes
198036399%Yes
198136299%Yes
198236299%Yes
1983365100%Yes
1984365100%Yes
198536199%Yes
1986364100%Yes
1987364100%Yes
1988366100%Yes
198936399%Yes
199036099%Yes
1991364100%Yes
199236399%Yes
1993364100%Yes
199436099%Yes
199535998%Yes
199636399%Yes
1997364100%Yes
199836399%Yes
199936299%Yes
200032087%No
200132689%No
200231787%No
200332489%No
200433792%Yes
200532589%No
200632388%No
200733191%Yes
200832990%No
200933993%Yes
201034193%Yes
201133391%Yes
201232087%No
201332088%No
201433090%Yes
201527575%No
2016318%No
2017329%No
20185315%No
2019318%No
20203710%No
2021339%No
202212735%No
20234011%No
2024329%No
202536099%Yes
202627475%No

Latest Records

20
Latest records at Valentia Observatory
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Valentia Observatory, IEall-time rain (Provisional)133.0 mm (5.2 in)7.0 mm (0.28 in)0 years36 of 100 (Notable)
12 September 2026Valentia Observatory, IEdaily high min (Provisional)16.6 C (61.9 F)1.3 C (2.3 F)24 years20 of 100 (Routine)
9 September 2026Valentia Observatory, IEdaily rain (Provisional)91.0 mm (3.6 in)57.1 mm (2.2 in)44 years61 of 100 (Major)
13 August 2026Valentia Observatory, IEdaily high min16.6 C (61.9 F)0.2 C (0.4 F)48 years23 of 100 (Routine)
12 August 2026Valentia Observatory, IEdaily high min18.3 C (64.9 F)2.0 C (3.6 F)31 years26 of 100 (Routine)
11 August 2026Valentia Observatory, IEdaily high min17.3 C (63.1 F)0.6 C (1.1 F)93 years39 of 100 (Notable)
8 August 2026Valentia Observatory, IEdaily high min16.3 C (61.3 F)0.4 C (0.7 F)44 years23 of 100 (Routine)
28 July 2026Valentia Observatory, IEdaily high min17.2 C (63.0 F)1.1 C (2.0 F)31 years23 of 100 (Routine)
16 July 2026Valentia Observatory, IEdaily high max25.6 C (78.1 F)0.4 C (0.7 F)53 years26 of 100 (Routine)
15 July 2026Valentia Observatory, IEdaily high max24.8 C (76.6 F)0.6 C (1.1 F)43 years23 of 100 (Routine)
14 July 2026Valentia Observatory, IEdaily high max25.9 C (78.6 F)0.8 C (1.4 F)56 years29 of 100 (Routine)
11 July 2026Valentia Observatory, IEdaily high max26.6 C (79.9 F)2.9 C (5.2 F)48 years36 of 100 (Notable)
11 July 2026Valentia Observatory, IEdaily high min18.0 C (64.4 F)1.9 C (3.4 F)43 years31 of 100 (Routine)
10 July 2026Valentia Observatory, IEdaily high max26.0 C (78.8 F)1.6 C (2.9 F)43 years28 of 100 (Routine)
9 July 2026Valentia Observatory, IEall-time rain126.0 mm (5.0 in)13.5 mm (0.5 in)45 years61 of 100 (Major)
26 June 2026Valentia Observatory, IEdaily high min16.8 C (62.2 F)2.0 C (3.6 F)13 years22 of 100 (Routine)
25 June 2026Valentia Observatory, IEdaily high max27.3 C (81.1 F)3.3 C (5.9 F)31 years31 of 100 (Routine)
25 June 2026Valentia Observatory, IEdaily high min17.3 C (63.1 F)1.5 C (2.7 F)16 years21 of 100 (Routine)
24 April 2026Valentia Observatory, IEdaily high min12.9 C (55.2 F)1.4 C (2.5 F)41 years26 of 100 (Routine)
14 April 2026Valentia Observatory, IEdaily high min11.0 C (51.8 F)0.2 C (0.4 F)4 years10 of 100 (Routine)

Climate Trend

69 complete years, 1941 to 2025
Annual mean temperature at Valentia Observatory as warming stripes, 1941 to 2025 One stripe for each of 69 complete years at Valentia Observatory, 1941 to 2025. Blue stripes are years cooler than the station's own mean of 10.7 C (51.3 F); red stripes are warmer. The coolest year was 1986, at 9.7 C (49.4 F), and the warmest was 2025, at 11.8 C (53.2 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1941: 10.2 C, -0.5 C from the station mean1942: 10.4 C, -0.4 C from the station mean1943: 10.8 C, +0.1 C from the station mean1944: 10.8 C, 0.0 C from the station mean1945: 11.4 C, +0.7 C from the station mean1946: 10.5 C, -0.2 C from the station mean1947: 10.4 C, -0.4 C from the station mean1948: 11.0 C, +0.3 C from the station mean1949: 11.6 C, +0.9 C from the station mean1950: 10.5 C, -0.2 C from the station mean1951: 10.3 C, -0.4 C from the station mean1952: 10.6 C, -0.2 C from the station mean1953: 10.9 C, +0.1 C from the station mean1954: 10.5 C, -0.3 C from the station mean1955: 10.7 C, 0.0 C from the station mean1956: 10.4 C, -0.3 C from the station mean1957: 11.0 C, +0.3 C from the station mean1958: 10.7 C, 0.0 C from the station mean1959: 11.3 C, +0.6 C from the station mean1960: 10.5 C, -0.2 C from the station mean1961: 10.8 C, +0.1 C from the station mean1962: 10.1 C, -0.6 C from the station mean1963: 9.7 C, -1.0 C from the station mean1964: 10.9 C, +0.1 C from the station mean1965: 10.2 C, -0.5 C from the station mean1966: 10.7 C, 0.0 C from the station mean1967: 10.2 C, -0.5 C from the station mean1968: 10.5 C, -0.2 C from the station mean1969: 10.1 C, -0.6 C from the station mean1970: 10.4 C, -0.3 C from the station mean1971: 10.9 C, +0.2 C from the station mean1972: 10.0 C, -0.8 C from the station mean1973: 10.8 C, 0.0 C from the station mean1974: 10.3 C, -0.5 C from the station mean1975: 10.9 C, +0.2 C from the station mean1976: 10.6 C, -0.1 C from the station mean1977: 10.4 C, -0.3 C from the station mean1978: 10.4 C, -0.3 C from the station mean1979: 9.8 C, -0.9 C from the station mean1980: 10.3 C, -0.4 C from the station mean1981: 10.6 C, -0.1 C from the station mean1982: 10.8 C, +0.1 C from the station mean1983: 10.9 C, +0.2 C from the station mean1984: 10.5 C, -0.2 C from the station mean1985: 10.3 C, -0.4 C from the station mean1986: 9.7 C, -1.1 C from the station mean1987: 10.5 C, -0.3 C from the station mean1988: 10.7 C, -0.1 C from the station mean1989: 11.2 C, +0.5 C from the station mean1990: 11.1 C, +0.4 C from the station mean1991: 10.8 C, +0.1 C from the station mean1992: 10.7 C, 0.0 C from the station mean1993: 10.8 C, 0.0 C from the station mean1994: 10.9 C, +0.2 C from the station mean1995: 11.4 C, +0.7 C from the station mean1996: 10.5 C, -0.3 C from the station mean1997: 11.6 C, +0.9 C from the station mean1998: 11.4 C, +0.6 C from the station mean1999: 11.2 C, +0.5 C from the station mean2000: 10.7 C, 0.0 C from the station mean2001: 10.8 C, 0.0 C from the station mean2002: 11.0 C, +0.3 C from the station mean2003: 11.3 C, +0.6 C from the station mean2004: 11.2 C, +0.4 C from the station mean2005: 11.4 C, +0.7 C from the station mean2006: 11.4 C, +0.7 C from the station mean2007: 11.8 C, +1.0 C from the station mean2009: 11.1 C, +0.3 C from the station mean2025: 11.8 C, +1.1 C from the station mean194119501960197019801990200020102020
One stripe for each of 69 complete years at Valentia Observatory, 1941 to 2025. Blue stripes are years cooler than the station's own mean of 10.7 C (51.3 F); red stripes are warmer. The coolest year was 1986, at 9.7 C (49.4 F), and the warmest was 2025, at 11.8 C (53.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Valentia Observatory as warming stripes, 1941 to 2025
YearAnnual mean temperatureDifference from the station mean
194110.2 C-0.54 C
194210.4 C-0.38 C
194310.8 C+0.11 C
194410.8 C+0.04 C
194511.4 C+0.67 C
194610.5 C-0.20 C
194710.4 C-0.38 C
194811.0 C+0.29 C
194911.6 C+0.90 C
195010.5 C-0.20 C
195110.3 C-0.42 C
195210.6 C-0.18 C
195310.9 C+0.13 C
195410.5 C-0.28 C
195510.7 C-0.02 C
195610.4 C-0.31 C
195711.0 C+0.29 C
195810.7 C0.00 C
195911.3 C+0.60 C
196010.5 C-0.21 C
196110.8 C+0.10 C
196210.1 C-0.62 C
19639.7 C-0.99 C
196410.9 C+0.13 C
196510.2 C-0.54 C
196610.7 C-0.02 C
196710.2 C-0.49 C
196810.5 C-0.24 C
196910.1 C-0.62 C
197010.4 C-0.34 C
197110.9 C+0.17 C
197210.0 C-0.75 C
197310.8 C+0.04 C
197410.3 C-0.45 C
197510.9 C+0.17 C
197610.6 C-0.11 C
197710.4 C-0.31 C
197810.4 C-0.29 C
19799.8 C-0.94 C
198010.3 C-0.40 C
198110.6 C-0.11 C
198210.8 C+0.08 C
198310.9 C+0.18 C
198410.5 C-0.23 C
198510.3 C-0.44 C
19869.7 C-1.07 C
198710.5 C-0.28 C
198810.7 C-0.05 C
198911.2 C+0.46 C
199011.1 C+0.38 C
199110.8 C+0.07 C
199210.7 C-0.01 C
199310.8 C+0.02 C
199410.9 C+0.21 C
199511.4 C+0.66 C
199610.5 C-0.28 C
199711.6 C+0.88 C
199811.4 C+0.62 C
199911.2 C+0.51 C
200010.7 C-0.02 C
200110.8 C+0.02 C
200211.0 C+0.28 C
200311.3 C+0.56 C
200411.2 C+0.43 C
200511.4 C+0.69 C
200611.4 C+0.67 C
200711.8 C+1.03 C
200911.1 C+0.34 C
202511.8 C+1.06 C

The annual mean temperature here has risen by 0.09 C (0.04 to 0.14) per decade over 1941 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 69 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Valentia Observatory
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.09 C (0.04 to 0.14) per decade0.2 F (0.1 to 0.3) per decade1941 to 202569Rise
Mean daily maximum0.06 C (0.01 to 0.11) per decade0.11 F (0.01 to 0.20) per decade1941 to 202569Rise
Mean daily minimum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1941 to 202569Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1929 to 2026
Yearly extremes at Valentia Observatory: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)28.4 C (83.1 F)199124.6 C (76.3 F)97
Coldest night (TNn)-7.7 C (18.1 F)2010-2.9 C (26.8 F)98
Wettest day (Rx1day)133.0 mm (5.2 in)202646.0 mm (1.8 in)86
Wettest five days (Rx5day)170.5 mm (6.7 in)201688.5 mm (3.5 in)86
Longest dry spell (CDD)40 days195515 days86

Hottest day (TXx)

Hottest day (TXx) at Valentia Observatory by year The hottest day of the year at Valentia Observatory, 1929 to 2026. The record is 28.4 C (83.1 F) in 1991, marked on the chart; the median year is 24.6 C (76.3 F). 1520253019401960198020002020Record: 28.4 C (83.1 F) in 1991
The hottest day of the year at Valentia Observatory, 1929 to 2026. The record is 28.4 C (83.1 F) in 1991, marked on the chart; the median year is 24.6 C (76.3 F).
Hottest day (TXx) at Valentia Observatory by year
YearHottest day (TXx)
192916.7 C (62.1 F)
193023.3 C (73.9 F)
193126.1 C (79.0 F)
193224.4 C (75.9 F)
193326.7 C (80.1 F)
193426.1 C (79.0 F)
193523.9 C (75.0 F)
193625.6 C (78.1 F)
193722.8 C (73.0 F)
193826.7 C (80.1 F)
193925.6 C (78.1 F)
1940n/a
194123.7 C (74.7 F)
194227.2 C (81.0 F)
194325.7 C (78.3 F)
194426.1 C (79.0 F)
194524.4 C (75.9 F)
194620.8 C (69.4 F)
194726.7 C (80.1 F)
194827.1 C (80.8 F)
194926.1 C (79.0 F)
195025.6 C (78.1 F)
195123.8 C (74.8 F)
195223.8 C (74.8 F)
195325.8 C (78.4 F)
195418.9 C (66.0 F)
195526.0 C (78.8 F)
195623.6 C (74.5 F)
195726.2 C (79.2 F)
195821.7 C (71.1 F)
195926.7 C (80.1 F)
196023.9 C (75.0 F)
196122.5 C (72.5 F)
196223.2 C (73.8 F)
196324.9 C (76.8 F)
196423.2 C (73.8 F)
196523.2 C (73.8 F)
196621.7 C (71.1 F)
196723.0 C (73.4 F)
196823.9 C (75.0 F)
196925.1 C (77.2 F)
197024.4 C (75.9 F)
197125.8 C (78.4 F)
197225.5 C (77.9 F)
197325.3 C (77.5 F)
197424.9 C (76.8 F)
197527.0 C (80.6 F)
197628.1 C (82.6 F)
197724.3 C (75.7 F)
197824.6 C (76.3 F)
197921.5 C (70.7 F)
198022.1 C (71.8 F)
198125.0 C (77.0 F)
198226.4 C (79.5 F)
198326.6 C (79.9 F)
198425.8 C (78.4 F)
198525.9 C (78.6 F)
198624.9 C (76.8 F)
198722.5 C (72.5 F)
198823.1 C (73.6 F)
198927.5 C (81.5 F)
199025.6 C (78.1 F)
199128.4 C (83.1 F)
199224.0 C (75.2 F)
199321.7 C (71.1 F)
199423.4 C (74.1 F)
199528.1 C (82.6 F)
199625.4 C (77.7 F)
199727.2 C (81.0 F)
199823.8 C (74.8 F)
199923.6 C (74.5 F)
200026.1 C (79.0 F)
200123.2 C (73.8 F)
200222.4 C (72.3 F)
200326.0 C (78.8 F)
200424.9 C (76.8 F)
200526.2 C (79.2 F)
200626.8 C (80.2 F)
200723.3 C (73.9 F)
200824.6 C (76.3 F)
200926.1 C (79.0 F)
201023.6 C (74.5 F)
201122.5 C (72.5 F)
201226.0 C (78.8 F)
201327.6 C (81.7 F)
201423.2 C (73.8 F)
201520.5 C (68.9 F)
201621.4 C (70.5 F)
201720.0 C (68.0 F)
201823.9 C (75.0 F)
201919.2 C (66.6 F)
202018.7 C (65.7 F)
202127.9 C (82.2 F)
202221.3 C (70.3 F)
202320.2 C (68.4 F)
202420.5 C (68.9 F)
202526.0 C (78.8 F)
202627.3 C (81.1 F)

Coldest night (TNn)

Coldest night (TNn) at Valentia Observatory by year The coldest night of the year at Valentia Observatory, 1929 to 2026. The record is -7.7 C (18.1 F) in 2010, marked on the chart; the median year is -2.9 C (26.8 F). -8-6-4-20219401960198020002020Record: -7.7 C (18.1 F) in 2010
The coldest night of the year at Valentia Observatory, 1929 to 2026. The record is -7.7 C (18.1 F) in 2010, marked on the chart; the median year is -2.9 C (26.8 F).
Coldest night (TNn) at Valentia Observatory by year
YearColdest night (TNn)
19290.0 C (32.0 F)
1930-1.7 C (28.9 F)
1931-2.8 C (27.0 F)
1932-2.8 C (27.0 F)
1933-5.0 C (23.0 F)
1934-1.7 C (28.9 F)
1935-2.2 C (28.0 F)
1936-1.1 C (30.0 F)
1937-3.9 C (25.0 F)
1938-5.0 C (23.0 F)
1939-3.3 C (26.1 F)
1940-5.6 C (21.9 F)
1941-2.1 C (28.2 F)
1942-5.4 C (22.3 F)
1943-1.6 C (29.1 F)
1944-2.6 C (27.3 F)
1945-6.3 C (20.7 F)
1946-4.4 C (24.1 F)
1947-5.9 C (21.4 F)
1948-2.2 C (28.0 F)
1949-0.9 C (30.4 F)
1950-2.9 C (26.8 F)
1951-3.3 C (26.1 F)
1952-2.3 C (27.9 F)
1953-2.1 C (28.2 F)
1954-2.6 C (27.3 F)
1955-3.7 C (25.3 F)
1956-5.1 C (22.8 F)
1957-3.4 C (25.9 F)
1958-7.2 C (19.0 F)
1959-3.8 C (25.2 F)
1960-3.7 C (25.3 F)
1961-5.3 C (22.5 F)
1962-5.1 C (22.8 F)
1963-4.4 C (24.1 F)
1964-2.8 C (27.0 F)
1965-4.8 C (23.4 F)
1966-4.5 C (23.9 F)
1967-2.4 C (27.7 F)
1968-4.3 C (24.3 F)
1969-7.3 C (18.9 F)
1970-2.8 C (27.0 F)
1971-3.2 C (26.2 F)
1972-3.2 C (26.2 F)
1973-2.2 C (28.0 F)
1974-2.5 C (27.5 F)
1975-2.6 C (27.3 F)
1976-4.3 C (24.3 F)
1977-4.0 C (24.8 F)
1978-4.1 C (24.6 F)
1979-5.6 C (21.9 F)
1980-3.7 C (25.3 F)
1981-3.0 C (26.6 F)
1982-1.6 C (29.1 F)
1983-3.5 C (25.7 F)
1984-2.8 C (27.0 F)
1985-4.7 C (23.5 F)
1986-4.0 C (24.8 F)
1987-5.9 C (21.4 F)
1988-4.0 C (24.8 F)
1989-2.0 C (28.4 F)
1990-1.6 C (29.1 F)
1991-5.2 C (22.6 F)
1992-2.8 C (27.0 F)
1993-0.8 C (30.6 F)
1994-3.0 C (26.6 F)
1995-3.5 C (25.7 F)
1996-3.8 C (25.2 F)
1997-6.8 C (19.8 F)
1998-2.6 C (27.3 F)
1999-3.4 C (25.9 F)
2000-2.9 C (26.8 F)
2001-4.0 C (24.8 F)
2002-1.4 C (29.5 F)
2003-3.5 C (25.7 F)
2004-2.1 C (28.2 F)
2005-1.2 C (29.8 F)
2006-2.8 C (27.0 F)
2007-0.5 C (31.1 F)
2008-2.9 C (26.8 F)
2009-3.6 C (25.5 F)
2010-7.7 C (18.1 F)
2011-3.0 C (26.6 F)
20120.1 C (32.2 F)
2013-2.0 C (28.4 F)
2014-0.5 C (31.1 F)
2015-2.2 C (28.0 F)
2016-1.9 C (28.6 F)
2017-1.2 C (29.8 F)
2018-2.5 C (27.5 F)
2019-1.3 C (29.7 F)
2020-1.2 C (29.8 F)
2021-2.1 C (28.2 F)
2022-3.6 C (25.5 F)
2023-1.9 C (28.6 F)
2024-2.6 C (27.3 F)
2025-2.1 C (28.2 F)
2026-1.9 C (28.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Valentia Observatory by year The wettest day of the year at Valentia Observatory, 1929 to 2026. The record is 133.0 mm (5.2 in) in 2026, marked on the chart; the median year is 46.0 mm (1.8 in). 05010015019401960198020002020Record: 133.0 mm (5.2 in) in 2026
The wettest day of the year at Valentia Observatory, 1929 to 2026. The record is 133.0 mm (5.2 in) in 2026, marked on the chart; the median year is 46.0 mm (1.8 in).
Wettest day (Rx1day) at Valentia Observatory by year
YearWettest day (Rx1day)
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
194145.3 mm (1.8 in)
194230.5 mm (1.2 in)
194335.9 mm (1.4 in)
194451.1 mm (2.0 in)
194540.6 mm (1.6 in)
194639.3 mm (1.5 in)
194746.4 mm (1.8 in)
194846.9 mm (1.8 in)
194947.2 mm (1.9 in)
195047.3 mm (1.9 in)
195147.3 mm (1.9 in)
195234.2 mm (1.3 in)
195341.8 mm (1.6 in)
195437.6 mm (1.5 in)
195579.0 mm (3.1 in)
195642.0 mm (1.7 in)
195759.5 mm (2.3 in)
195851.0 mm (2.0 in)
195951.2 mm (2.0 in)
196044.3 mm (1.7 in)
196147.2 mm (1.9 in)
196245.9 mm (1.8 in)
196332.5 mm (1.3 in)
196437.7 mm (1.5 in)
196549.6 mm (2.0 in)
196637.6 mm (1.5 in)
196732.8 mm (1.3 in)
196855.9 mm (2.2 in)
196938.3 mm (1.5 in)
197032.3 mm (1.3 in)
197137.8 mm (1.5 in)
197251.0 mm (2.0 in)
197341.1 mm (1.6 in)
197438.7 mm (1.5 in)
197539.6 mm (1.6 in)
197634.0 mm (1.3 in)
197774.4 mm (2.9 in)
197853.2 mm (2.1 in)
197947.6 mm (1.9 in)
1980112.5 mm (4.4 in)
198149.6 mm (2.0 in)
198246.0 mm (1.8 in)
198369.9 mm (2.8 in)
198480.9 mm (3.2 in)
198548.6 mm (1.9 in)
198688.8 mm (3.5 in)
198741.5 mm (1.6 in)
198848.5 mm (1.9 in)
198932.6 mm (1.3 in)
199029.5 mm (1.2 in)
199159.4 mm (2.3 in)
199239.5 mm (1.6 in)
199394.3 mm (3.7 in)
199442.0 mm (1.7 in)
199541.1 mm (1.6 in)
199648.8 mm (1.9 in)
199735.8 mm (1.4 in)
199845.5 mm (1.8 in)
199946.6 mm (1.8 in)
200038.8 mm (1.5 in)
200135.5 mm (1.4 in)
200237.4 mm (1.5 in)
200355.1 mm (2.2 in)
200433.5 mm (1.3 in)
200547.6 mm (1.9 in)
200651.7 mm (2.0 in)
200748.2 mm (1.9 in)
200838.9 mm (1.5 in)
200951.8 mm (2.0 in)
201067.1 mm (2.6 in)
201171.1 mm (2.8 in)
201235.1 mm (1.4 in)
201340.1 mm (1.6 in)
201438.1 mm (1.5 in)
201567.1 mm (2.6 in)
201694.0 mm (3.7 in)
201742.9 mm (1.7 in)
201839.6 mm (1.6 in)
201935.1 mm (1.4 in)
202051.1 mm (2.0 in)
202146.0 mm (1.8 in)
202239.1 mm (1.5 in)
202351.3 mm (2.0 in)
202454.1 mm (2.1 in)
202551.0 mm (2.0 in)
2026133.0 mm (5.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Valentia Observatory by year The wettest five days of the year at Valentia Observatory, 1929 to 2026. The record is 170.5 mm (6.7 in) in 2016, marked on the chart; the median year is 88.5 mm (3.5 in). 5010015020019401960198020002020Record: 170.5 mm (6.7 in) in 2016
The wettest five days of the year at Valentia Observatory, 1929 to 2026. The record is 170.5 mm (6.7 in) in 2016, marked on the chart; the median year is 88.5 mm (3.5 in).
Wettest five days (Rx5day) at Valentia Observatory by year
YearWettest five days (Rx5day)
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
194192.8 mm (3.7 in)
194285.4 mm (3.4 in)
194378.7 mm (3.1 in)
194496.9 mm (3.8 in)
194582.0 mm (3.2 in)
194671.3 mm (2.8 in)
194787.9 mm (3.5 in)
194894.5 mm (3.7 in)
194980.1 mm (3.2 in)
1950104.0 mm (4.1 in)
195173.4 mm (2.9 in)
195269.0 mm (2.7 in)
195368.1 mm (2.7 in)
195487.1 mm (3.4 in)
195585.6 mm (3.4 in)
195680.1 mm (3.2 in)
195791.6 mm (3.6 in)
195898.2 mm (3.9 in)
1959100.2 mm (3.9 in)
196095.9 mm (3.8 in)
196187.3 mm (3.4 in)
196265.4 mm (2.6 in)
196396.2 mm (3.8 in)
196482.3 mm (3.2 in)
196572.2 mm (2.8 in)
196687.7 mm (3.5 in)
196776.6 mm (3.0 in)
1968118.8 mm (4.7 in)
196993.1 mm (3.7 in)
197072.3 mm (2.8 in)
197157.3 mm (2.3 in)
197273.6 mm (2.9 in)
197377.2 mm (3.0 in)
197490.2 mm (3.6 in)
1975131.5 mm (5.2 in)
197686.9 mm (3.4 in)
1977128.1 mm (5.0 in)
1978127.2 mm (5.0 in)
197995.6 mm (3.8 in)
1980157.6 mm (6.2 in)
198195.4 mm (3.8 in)
198298.2 mm (3.9 in)
1983123.0 mm (4.8 in)
1984111.7 mm (4.4 in)
198583.8 mm (3.3 in)
1986110.6 mm (4.4 in)
198772.9 mm (2.9 in)
198884.8 mm (3.3 in)
198980.4 mm (3.2 in)
199079.4 mm (3.1 in)
199190.9 mm (3.6 in)
199280.3 mm (3.2 in)
199399.6 mm (3.9 in)
199491.4 mm (3.6 in)
199585.3 mm (3.4 in)
199695.5 mm (3.8 in)
199799.6 mm (3.9 in)
199888.1 mm (3.5 in)
1999118.1 mm (4.6 in)
200091.3 mm (3.6 in)
200181.7 mm (3.2 in)
2002101.2 mm (4.0 in)
2003118.9 mm (4.7 in)
200472.1 mm (2.8 in)
2005102.6 mm (4.0 in)
200697.8 mm (3.9 in)
200786.8 mm (3.4 in)
200881.1 mm (3.2 in)
2009113.3 mm (4.5 in)
201099.7 mm (3.9 in)
2011109.0 mm (4.3 in)
201292.2 mm (3.6 in)
201373.2 mm (2.9 in)
2014102.2 mm (4.0 in)
201580.3 mm (3.2 in)
2016170.5 mm (6.7 in)
201773.9 mm (2.9 in)
201888.9 mm (3.5 in)
201977.8 mm (3.1 in)
2020109.8 mm (4.3 in)
202190.5 mm (3.6 in)
2022108.2 mm (4.3 in)
202387.1 mm (3.4 in)
202487.4 mm (3.4 in)
202578.5 mm (3.1 in)
202655.7 mm (2.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Valentia Observatory by year The longest dry spell of the year at Valentia Observatory, 1929 to 2026. The record is 40 days in 1955, marked on the chart; the median year is 15 days. 01020304019401960198020002020Record: 40 days in 1955
The longest dry spell of the year at Valentia Observatory, 1929 to 2026. The record is 40 days in 1955, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Valentia Observatory by year
YearLongest dry spell (CDD)
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
194122 days
194217 days
194312 days
194413 days
194513 days
194615 days
194724 days
194816 days
194913 days
195017 days
195114 days
195217 days
195316 days
195420 days
195540 days
195615 days
195716 days
195810 days
195912 days
196018 days
196114 days
196220 days
196314 days
196411 days
196537 days
196612 days
196713 days
196817 days
196914 days
197016 days
197118 days
197224 days
197317 days
197416 days
197518 days
197623 days
197713 days
197816 days
197914 days
198015 days
198111 days
198224 days
198319 days
198426 days
198519 days
198618 days
198712 days
198818 days
198920 days
199013 days
199121 days
199217 days
199319 days
199413 days
199515 days
199614 days
199721 days
199818 days
199912 days
200015 days
200113 days
200216 days
200314 days
200420 days
200511 days
20066 days
20077 days
20086 days
20093 days
20105 days
20114 days
20129 days
201316 days
201416 days
201512 days
201619 days
201711 days
201823 days
201914 days
202010 days
202114 days
202215 days
202320 days
202414 days
202513 days
20266 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

58 years with a frost

Across 58 years with a frost, the median last spring frost at Valentia Observatory falls on 22 March and the median first autumn frost on 26 November, which leaves a median of 255 days between them.

Fitted over all years, the growing season changes by +0.9 days per decade at this station.

Frost dates and growing season at Valentia Observatory
MeasureMedian, all yearsEarliest periodRecent period (1973 to 2025)Recent against earliestFitted trend
Last spring frost22 Marchn/a25 Marchn/a0.0 days per decade
First autumn frost26 Novembern/a26 Novembern/a+0.9 days per decade
Growing days255 daysn/a247 daysn/a+0.9 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

77 years, 1941 to 2025

A day with at least 43.6 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 112.2 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Valentia Observatory: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years43.6 mm (1.7 in)
5 years55.5 mm (2.2 in)
10 years65.5 mm (2.6 in)
25 years81.1 mm (3.2 in)
50 years95.3 mm (3.8 in)
100 years112.2 mm (4.4 in)Longer than the 77 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 77 years of values from 1941 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 112.5 mm (4.4 in) in 1980; 94.3 mm (3.7 in) in 1993; 94.0 mm (3.7 in) in 2016.

Download the Data

  • Data for Valentia Observatory standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Valentia Observatory threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).