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Rhyll Weather Records (ASN00086373)

Record envelope, standing records and threshold days for Rhyll (ASN00086373), Australia, with 37 years of record.

Key Facts for Rhyll

  • Rhyll (ASN00086373) is a weather station in Australia at -38.46 latitude and 145.31 longitude, 13 m (44 ft) above sea level.
  • The station reports from 1990 to 2026, 37 years of record.
  • 1,464 records set at Rhyll still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Rhyll set a daily record precipitation of 21.0 mm (0.8 in) on 2 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Australia, -38.46 latitude, 145.31 longitude.
  • Elevation: 13 m (44 ft).
  • Period of record: 1990 to 2026, 37 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

20 days at or beyond a record
Daily record high and record low at Rhyll, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rhyll. The lines show the 2026 daily maximum and minimum. 20 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Rhyll. The lines show the 2026 daily maximum and minimum. 20 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rhyll, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan40.2 C (104.4 F)9.2 C (48.6 F)35.9 C (96.6 F)13.0 C (55.4 F)
Feb42.1 C (107.8 F)7.9 C (46.2 F)31.8 C (89.2 F)12.2 C (54.0 F)
Mar37.9 C (100.2 F)8.8 C (47.8 F)29.5 C (85.1 F)11.1 C (52.0 F)
Apr31.1 C (88.0 F)0.3 C (32.5 F)27.5 C (81.5 F)8.5 C (47.3 F)
May25.2 C (77.4 F)-0.1 C (31.8 F)25.2 C (77.4 F)8.1 C (46.6 F)
Jun20.9 C (69.6 F)-0.9 C (30.4 F)19.4 C (66.9 F)4.9 C (40.8 F)
Jul19.3 C (66.7 F)-0.3 C (31.5 F)17.1 C (62.8 F)4.4 C (39.9 F)
Aug25.7 C (78.3 F)0.4 C (32.7 F)18.2 C (64.8 F)5.1 C (41.2 F)
Sep25.2 C (77.4 F)1.7 C (35.1 F)24.4 C (75.9 F)7.2 C (45.0 F)
Oct30.9 C (87.6 F)0.3 C (32.5 F)20.6 C (69.1 F)11.8 C (53.2 F)
Nov35.5 C (95.9 F)5.2 C (41.4 F)n/an/a
Dec38.2 C (100.8 F)3.1 C (37.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rhyll by the year they were set 1,464 records at Rhyll still stand. 1992 holds the most, with 101. 0501001501990: 201991: 591992: 1011993: 491994: 631995: 691996: 441997: 451998: 381999: 362000: 362001: 232002: 352003: 382004: 272005: 452006: 312007: 362008: 452009: 432010: 342011: 332012: 352013: 402014: 392015: 452016: 282017: 392018: 292019: 532020: 312021: 232022: 222023: 292024: 342025: 382026: 291990199419982002200620102014201820222026
1,464 records at Rhyll still stand. 1992 holds the most, with 101.
Standing records at Rhyll by the year they were set
Year setStanding records
199020
199159
1992101
199349
199463
199569
199644
199745
199838
199936
200036
200123
200235
200338
200427
200545
200631
200736
200845
200943
201034
201133
201235
201340
201439
201545
201628
201739
201829
201953
202031
202123
202222
202329
202434
202538
202629

Wettest Day of Each Month

Feb: 105.4 mm (4.1 in)
Record daily precipitation for each month at Rhyll The wettest day on record for each calendar month at Rhyll. The most was 105.4 mm (4.1 in) on 3 February 2005. 050100150 Jan: 41.0 mm (1.6 in), 28 January 1995 Jan Feb: 105.4 mm (4.1 in), 3 February 2005 Feb Mar: 41.4 mm (1.6 in), 5 March 2020 Mar Apr: 68.0 mm (2.7 in), 23 April 2001 Apr May: 55.6 mm (2.2 in), 4 May 2012 May Jun: 40.2 mm (1.6 in), 22 June 2012 Jun Jul: 44.6 mm (1.8 in), 6 July 2014 Jul Aug: 37.0 mm (1.5 in), 27 August 1999 Aug Sep: 55.6 mm (2.2 in), 19 September 2013 Sep Oct: 43.8 mm (1.7 in), 31 October 2010 Oct Nov: 43.8 mm (1.7 in), 13 November 2013 Nov Dec: 40.8 mm (1.6 in), 13 December 2008 Dec
The wettest day on record for each calendar month at Rhyll. The most was 105.4 mm (4.1 in) on 3 February 2005.
Record daily precipitation for each month at Rhyll
MonthRecord daily precipitation (mm)Date
Jan41.0 mm (1.6 in)28 January 1995
Feb105.4 mm (4.1 in)3 February 2005
Mar41.4 mm (1.6 in)5 March 2020
Apr68.0 mm (2.7 in)23 April 2001
May55.6 mm (2.2 in)4 May 2012
Jun40.2 mm (1.6 in)22 June 2012
Jul44.6 mm (1.8 in)6 July 2014
Aug37.0 mm (1.5 in)27 August 1999
Sep55.6 mm (2.2 in)19 September 2013
Oct43.8 mm (1.7 in)31 October 2010
Nov43.8 mm (1.7 in)13 November 2013
Dec40.8 mm (1.6 in)13 December 2008

Period of Record Coverage

1990 to 2026
Days with data per year at Rhyll 37 years of record at Rhyll, 1990 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1990, 2026. 1990: 155 of 365 days1991: 354 of 365 days1992: 350 of 366 days1993: 355 of 365 days1994: 349 of 365 days1995: 355 of 365 days1996: 359 of 366 days1997: 348 of 365 days1998: 342 of 365 days1999: 351 of 365 days2000: 341 of 366 days2001: 359 of 365 days2002: 356 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 364 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 363 of 365 days2015: 364 of 365 days2016: 359 of 366 days2017: 363 of 365 days2018: 357 of 365 days2019: 359 of 365 days2020: 364 of 366 days2021: 359 of 365 days2022: 352 of 365 days2023: 350 of 365 days2024: 346 of 366 days2025: 351 of 365 days2026: 263 of 365 days19901995200020052010201520202025
37 years of record at Rhyll, 1990 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1990, 2026.
Days with data per year at Rhyll
YearDays with dataShare of yearComplete
199015542%No
199135497%Yes
199235096%Yes
199335597%Yes
199434996%Yes
199535597%Yes
199635998%Yes
199734895%Yes
199834294%Yes
199935196%Yes
200034193%Yes
200135998%Yes
200235698%Yes
2003364100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
200836499%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
201436399%Yes
2015364100%Yes
201635998%Yes
201736399%Yes
201835798%Yes
201935998%Yes
202036499%Yes
202135998%Yes
202235296%Yes
202335096%Yes
202434695%Yes
202535196%Yes
202626372%No

Latest Records

20
Latest records at Rhyll
DateStationRecordValueBeat old record byOld record stoodSignificance
2 October 2026Rhyll, AUdaily rain (Provisional)21.0 mm (0.8 in)12.0 mm (0.5 in)25 years20 of 100 (Routine)
30 September 2026Rhyll, AUdaily high min (Provisional)15.8 C (60.4 F)0.7 C (1.3 F)24 years13 of 100 (Routine)
25 September 2026Rhyll, AUdaily high max (Provisional)22.3 C (72.1 F)1.6 C (2.9 F)12 years11 of 100 (Routine)
25 September 2026Rhyll, AUdaily high min (Provisional)15.7 C (60.3 F)0.3 C (0.5 F)12 years7 of 100 (Routine)
20 September 2026Rhyll, AUdaily high max (Provisional)24.4 C (75.9 F)2.5 C (4.5 F)7 years13 of 100 (Routine)
14 September 2026Rhyll, AUdaily high min (Provisional)14.3 C (57.7 F)1.3 C (2.3 F)25 years16 of 100 (Routine)
20 August 2026Rhyll, AUdaily high min (Provisional)11.3 C (52.3 F)0.1 C (0.2 F)3 years3 of 100 (Routine)
14 August 2026Rhyll, AUdaily high min11.6 C (52.9 F)0.1 C (0.2 F)8 years5 of 100 (Routine)
10 August 2026Rhyll, AUdaily rain25.6 mm (1.0 in)2.8 mm (0.11 in)7 years10 of 100 (Routine)
8 August 2026Rhyll, AUdaily high max16.5 C (61.7 F)0.1 C (0.2 F)25 years10 of 100 (Routine)
1 August 2026Rhyll, AUdaily low min5.1 C (41.2 F)0.2 C (0.4 F)1 year4 of 100 (Routine)
29 July 2026Rhyll, AUdaily rain18.2 mm (0.7 in)1.2 mm (0.05 in)31 years14 of 100 (Routine)
27 July 2026Rhyll, AUdaily high min10.5 C (50.9 F)0.2 C (0.4 F)4 years5 of 100 (Routine)
16 July 2026Rhyll, AUdaily high min10.7 C (51.3 F)0.1 C (0.2 F)12 years6 of 100 (Routine)
12 July 2026Rhyll, AUdaily rain (Tie)12.8 mm (0.5 in)tie12 years1 of 100 (Routine)
9 July 2026Rhyll, AUdaily low max8.3 C (46.9 F)1.6 C (2.9 F)28 years21 of 100 (Routine)
1 July 2026Rhyll, AUdaily high min11.8 C (53.2 F)0.8 C (1.4 F)20 years13 of 100 (Routine)
1 July 2026Rhyll, AUdaily high max17.1 C (62.8 F)0.2 C (0.4 F)5 years5 of 100 (Routine)
26 June 2026Rhyll, AUdaily low max10.4 C (50.7 F)0.7 C (1.3 F)9 years9 of 100 (Routine)
21 June 2026Rhyll, AUdaily rain23.6 mm (0.9 in)8.6 mm (0.34 in)24 years20 of 100 (Routine)

Climate Trend

33 complete years, 1991 to 2025
Annual mean temperature at Rhyll as warming stripes, 1991 to 2025 One stripe for each of 33 complete years at Rhyll, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 15.3 C (59.6 F); red stripes are warmer. The coolest year was 1992, at 13.8 C (56.9 F), and the warmest was 2007, at 16.1 C (60.9 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1991: 14.8 C, -0.6 C from the station mean1992: 13.8 C, -1.5 C from the station mean1993: 15.1 C, -0.2 C from the station mean1994: 14.7 C, -0.6 C from the station mean1995: 14.3 C, -1.1 C from the station mean1996: 14.2 C, -1.1 C from the station mean1998: 14.7 C, -0.6 C from the station mean1999: 15.5 C, +0.2 C from the station mean2001: 15.2 C, -0.1 C from the station mean2002: 15.3 C, 0.0 C from the station mean2003: 15.1 C, -0.2 C from the station mean2004: 14.8 C, -0.5 C from the station mean2005: 15.6 C, +0.2 C from the station mean2006: 15.0 C, -0.3 C from the station mean2007: 16.1 C, +0.7 C from the station mean2008: 15.3 C, 0.0 C from the station mean2009: 15.6 C, +0.2 C from the station mean2010: 15.5 C, +0.2 C from the station mean2011: 15.4 C, +0.1 C from the station mean2012: 15.4 C, 0.0 C from the station mean2013: 15.8 C, +0.5 C from the station mean2014: 16.0 C, +0.7 C from the station mean2015: 15.5 C, +0.2 C from the station mean2016: 15.8 C, +0.5 C from the station mean2017: 15.8 C, +0.5 C from the station mean2018: 15.9 C, +0.6 C from the station mean2019: 15.7 C, +0.4 C from the station mean2020: 15.2 C, -0.1 C from the station mean2021: 15.3 C, 0.0 C from the station mean2022: 15.7 C, +0.4 C from the station mean2023: 15.8 C, +0.4 C from the station mean2024: 16.0 C, +0.6 C from the station mean2025: 15.9 C, +0.6 C from the station mean19911995200020052010201520202025
One stripe for each of 33 complete years at Rhyll, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 15.3 C (59.6 F); red stripes are warmer. The coolest year was 1992, at 13.8 C (56.9 F), and the warmest was 2007, at 16.1 C (60.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Rhyll as warming stripes, 1991 to 2025
YearAnnual mean temperatureDifference from the station mean
199114.8 C-0.55 C
199213.8 C-1.49 C
199315.1 C-0.24 C
199414.7 C-0.58 C
199514.3 C-1.06 C
199614.2 C-1.12 C
199814.7 C-0.61 C
199915.5 C+0.20 C
200115.2 C-0.11 C
200215.3 C-0.02 C
200315.1 C-0.20 C
200414.8 C-0.50 C
200515.6 C+0.23 C
200615.0 C-0.30 C
200716.1 C+0.74 C
200815.3 C-0.03 C
200915.6 C+0.25 C
201015.5 C+0.22 C
201115.4 C+0.07 C
201215.4 C+0.04 C
201315.8 C+0.49 C
201416.0 C+0.70 C
201515.5 C+0.17 C
201615.8 C+0.48 C
201715.8 C+0.46 C
201815.9 C+0.59 C
201915.7 C+0.37 C
202015.2 C-0.08 C
202115.3 C-0.04 C
202215.7 C+0.36 C
202315.8 C+0.43 C
202416.0 C+0.65 C
202515.9 C+0.60 C

The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1991 to 2025. In Fahrenheit: 0.7 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rhyll
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.3 to 0.5) per decade0.7 F (0.5 to 1.0) per decade1991 to 202533Rise
Mean daily maximum0.5 C (0.3 to 0.6) per decade0.9 F (0.6 to 1.1) per decade1991 to 202533Rise
Mean daily minimum0.3 C (0.2 to 0.5) per decade0.6 F (0.4 to 0.8) per decade1991 to 202533Rise

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

1990 to 2026
Yearly extremes at Rhyll: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.1 C (107.8 F)200935.9 C (96.6 F)37
Coldest night (TNn)-0.9 C (30.4 F)19924.0 C (39.2 F)37
Wettest day (Rx1day)105.4 mm (4.1 in)200534.8 mm (1.4 in)33
Wettest five days (Rx5day)128.0 mm (5.0 in)200556.6 mm (2.2 in)33
Longest dry spell (CDD)36 days200920 days33

Hottest day (TXx)

Hottest day (TXx) at Rhyll by year The hottest day of the year at Rhyll, 1990 to 2026. The record is 42.1 C (107.8 F) in 2009, marked on the chart; the median year is 35.9 C (96.6 F). 3032.53537.54042.51990200020102020Record: 42.1 C (107.8 F) in 2009
The hottest day of the year at Rhyll, 1990 to 2026. The record is 42.1 C (107.8 F) in 2009, marked on the chart; the median year is 35.9 C (96.6 F).
Hottest day (TXx) at Rhyll by year
YearHottest day (TXx)
199032.3 C (90.1 F)
199137.9 C (100.2 F)
199233.5 C (92.3 F)
199337.3 C (99.1 F)
199433.6 C (92.5 F)
199539.4 C (102.9 F)
199632.6 C (90.7 F)
199737.3 C (99.1 F)
199835.6 C (96.1 F)
199933.3 C (91.9 F)
200034.8 C (94.6 F)
200134.4 C (93.9 F)
200233.5 C (92.3 F)
200337.7 C (99.9 F)
200434.0 C (93.2 F)
200534.2 C (93.6 F)
200636.1 C (97.0 F)
200735.7 C (96.3 F)
200837.2 C (99.0 F)
200942.1 C (107.8 F)
201039.0 C (102.2 F)
201135.1 C (95.2 F)
201235.2 C (95.4 F)
201337.1 C (98.8 F)
201439.3 C (102.7 F)
201538.2 C (100.8 F)
201640.2 C (104.4 F)
201735.3 C (95.5 F)
201837.2 C (99.0 F)
201937.7 C (99.9 F)
202037.7 C (99.9 F)
202135.8 C (96.4 F)
202233.9 C (93.0 F)
202337.2 C (99.0 F)
202435.2 C (95.4 F)
202536.7 C (98.1 F)
202635.9 C (96.6 F)

Coldest night (TNn)

Coldest night (TNn) at Rhyll by year The coldest night of the year at Rhyll, 1990 to 2026. The record is -0.9 C (30.4 F) in 1992, marked on the chart; the median year is 4.0 C (39.2 F). -202461990200020102020Record: -0.9 C (30.4 F) in 1992
The coldest night of the year at Rhyll, 1990 to 2026. The record is -0.9 C (30.4 F) in 1992, marked on the chart; the median year is 4.0 C (39.2 F).
Coldest night (TNn) at Rhyll by year
YearColdest night (TNn)
19900.0 C (32.0 F)
1991-0.8 C (30.6 F)
1992-0.9 C (30.4 F)
19930.3 C (32.5 F)
19940.3 C (32.5 F)
19952.7 C (36.9 F)
19963.3 C (37.9 F)
19973.7 C (38.7 F)
19983.4 C (38.1 F)
19995.0 C (41.0 F)
20005.2 C (41.4 F)
20014.0 C (39.2 F)
20024.0 C (39.2 F)
20034.4 C (39.9 F)
20043.9 C (39.0 F)
20051.1 C (34.0 F)
20064.0 C (39.2 F)
20073.5 C (38.3 F)
20084.8 C (40.6 F)
20094.5 C (40.1 F)
20104.5 C (40.1 F)
20114.2 C (39.6 F)
20124.5 C (40.1 F)
20135.1 C (41.2 F)
20144.4 C (39.9 F)
20153.6 C (38.5 F)
20164.4 C (39.9 F)
20174.1 C (39.4 F)
20184.7 C (40.5 F)
20193.7 C (38.7 F)
20202.9 C (37.2 F)
20213.6 C (38.5 F)
20224.1 C (39.4 F)
20235.1 C (41.2 F)
20243.1 C (37.6 F)
20254.8 C (40.6 F)
20264.4 C (39.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rhyll by year The wettest day of the year at Rhyll, 1990 to 2026. The record is 105.4 mm (4.1 in) in 2005, marked on the chart; the median year is 34.8 mm (1.4 in). 02550751001251990200020102020Record: 105.4 mm (4.1 in) in 2005
The wettest day of the year at Rhyll, 1990 to 2026. The record is 105.4 mm (4.1 in) in 2005, marked on the chart; the median year is 34.8 mm (1.4 in).
Wettest day (Rx1day) at Rhyll by year
YearWettest day (Rx1day)
1990n/a
1991n/a
1992n/a
1993n/a
199436.0 mm (1.4 in)
199542.0 mm (1.7 in)
199636.0 mm (1.4 in)
199738.0 mm (1.5 in)
199831.0 mm (1.2 in)
199937.0 mm (1.5 in)
200029.0 mm (1.1 in)
200168.0 mm (2.7 in)
200224.0 mm (0.9 in)
200331.8 mm (1.3 in)
200434.4 mm (1.4 in)
2005105.4 mm (4.1 in)
200625.6 mm (1.0 in)
200727.8 mm (1.1 in)
200840.8 mm (1.6 in)
200933.0 mm (1.3 in)
201043.8 mm (1.7 in)
201134.8 mm (1.4 in)
201255.6 mm (2.2 in)
201355.6 mm (2.2 in)
201444.6 mm (1.8 in)
201528.2 mm (1.1 in)
201629.8 mm (1.2 in)
201751.2 mm (2.0 in)
201833.8 mm (1.3 in)
201924.4 mm (1.0 in)
202041.4 mm (1.6 in)
202127.8 mm (1.1 in)
202243.4 mm (1.7 in)
202326.0 mm (1.0 in)
202457.8 mm (2.3 in)
202525.2 mm (1.0 in)
202625.6 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rhyll by year The wettest five days of the year at Rhyll, 1990 to 2026. The record is 128.0 mm (5.0 in) in 2005, marked on the chart; the median year is 56.6 mm (2.2 in). 2550751001251501990200020102020Record: 128.0 mm (5.0 in) in 2005
The wettest five days of the year at Rhyll, 1990 to 2026. The record is 128.0 mm (5.0 in) in 2005, marked on the chart; the median year is 56.6 mm (2.2 in).
Wettest five days (Rx5day) at Rhyll by year
YearWettest five days (Rx5day)
1990n/a
1991n/a
1992n/a
1993n/a
199480.0 mm (3.1 in)
199569.0 mm (2.7 in)
199653.0 mm (2.1 in)
199764.0 mm (2.5 in)
199840.4 mm (1.6 in)
199943.6 mm (1.7 in)
200055.0 mm (2.2 in)
2001106.2 mm (4.2 in)
200279.0 mm (3.1 in)
200356.6 mm (2.2 in)
200456.4 mm (2.2 in)
2005128.0 mm (5.0 in)
200667.8 mm (2.7 in)
200753.4 mm (2.1 in)
200860.8 mm (2.4 in)
200954.2 mm (2.1 in)
201048.6 mm (1.9 in)
201171.8 mm (2.8 in)
201293.6 mm (3.7 in)
201370.6 mm (2.8 in)
201454.2 mm (2.1 in)
201541.0 mm (1.6 in)
201642.2 mm (1.7 in)
201756.6 mm (2.2 in)
201862.0 mm (2.4 in)
201966.0 mm (2.6 in)
202088.4 mm (3.5 in)
202140.8 mm (1.6 in)
202253.6 mm (2.1 in)
202338.4 mm (1.5 in)
202465.2 mm (2.6 in)
202542.8 mm (1.7 in)
202645.8 mm (1.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rhyll by year The longest dry spell of the year at Rhyll, 1990 to 2026. The record is 36 days in 2009, marked on the chart; the median year is 20 days. 0102030401990200020102020Record: 36 days in 2009
The longest dry spell of the year at Rhyll, 1990 to 2026. The record is 36 days in 2009, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Rhyll by year
YearLongest dry spell (CDD)
1990n/a
1991n/a
1992n/a
1993n/a
19942 days
199511 days
199627 days
199718 days
199812 days
199918 days
200031 days
200127 days
200221 days
200321 days
200423 days
200517 days
200616 days
200721 days
200825 days
200936 days
201018 days
201110 days
201216 days
201320 days
201425 days
201519 days
201617 days
201718 days
201822 days
201919 days
202024 days
202116 days
202225 days
202321 days
202418 days
202527 days
202622 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.

Rainfall Return Levels

30 years, 1996 to 2025

A day with at least 34.6 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 112.3 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Rhyll: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years34.6 mm (1.4 in)
5 years46.9 mm (1.8 in)
10 years57.6 mm (2.3 in)
25 years75.2 mm (3.0 in)
50 years91.9 mm (3.6 in)Longer than the 30 years of record
100 years112.3 mm (4.4 in)Longer than the 30 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, 30 years of values from 1996 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: 105.4 mm (4.1 in) in 2005; 68.0 mm (2.7 in) in 2001; 57.8 mm (2.3 in) in 2024.

Download the Data

  • Data for Rhyll standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Rhyll 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).