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Isla Perez Weather Records (MXN00004016)

Record envelope, standing records and threshold days for Isla Perez (MXN00004016), Mexico, with 54 years of record.

Key Facts for Isla Perez

  • Isla Perez (MXN00004016) is a weather station in Mexico at 22.38 latitude and -89.67 longitude, 3 m (9 ft) above sea level.
  • The station reports from 1930 to 1983, 54 years of record.
  • 1,464 records set at Isla Perez still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Isla Perez tied a daily record low minimum temperature of 20.0 C (68.0 F) on 29 October 1983.

About the Station

  • Location: Mexico, 22.38 latitude, -89.67 longitude.
  • Elevation: 3 m (9 ft).
  • Period of record: 1930 to 1983, 54 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Isla Perez, with 2026 drawn through them The band shows the record high and record low for each calendar day at Isla Perez. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 1020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Isla Perez. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Isla Perez, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)10.0 C (50.0 F)n/an/a
Feb35.0 C (95.0 F)11.7 C (53.1 F)n/an/a
Mar36.1 C (97.0 F)15.0 C (59.0 F)n/an/a
Apr37.8 C (100.0 F)17.2 C (63.0 F)n/an/a
May38.9 C (102.0 F)17.8 C (64.0 F)n/an/a
Jun38.9 C (102.0 F)20.6 C (69.1 F)n/an/a
Jul40.6 C (105.1 F)20.6 C (69.1 F)n/an/a
Aug40.6 C (105.1 F)20.0 C (68.0 F)n/an/a
Sep40.0 C (104.0 F)20.6 C (69.1 F)n/an/a
Oct37.8 C (100.0 F)17.8 C (64.0 F)n/an/a
Nov38.9 C (102.0 F)16.1 C (61.0 F)n/an/a
Dec35.6 C (96.1 F)14.4 C (57.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Isla Perez by the year they were set 1,464 records at Isla Perez still stand. 1930 holds the most, with 116. 0501001501930: 1161931: 781932: 591933: 291934: 311935: 181936: 251937: 171938: 251939: 81940: 231941: 121942: 201943: 171944: 131945: 91946: 101947: 151948: 91949: 51950: 191951: 361952: 361953: 191954: 151955: 191956: 181957: 231958: 221959: 161960: 251961: 191962: 271963: 181964: 271965: 241966: 631967: 581968: 221969: 121970: 811971: 291973: 621974: 401975: 251976: 111977: 51978: 191979: 151982: 931983: 27193019361942194819541960196619731979
1,464 records at Isla Perez still stand. 1930 holds the most, with 116.
Standing records at Isla Perez by the year they were set
Year setStanding records
1930116
193178
193259
193329
193431
193518
193625
193717
193825
19398
194023
194112
194220
194317
194413
19459
194610
194715
19489
19495
195019
195136
195236
195319
195415
195519
195618
195723
195822
195916
196025
196119
196227
196318
196427
196524
196663
196758
196822
196912
197081
197129
197362
197440
197525
197611
19775
197819
197915
198293
198327

All-Time Record Progression

4 new records
When Isla Perez set new all-time records 4 all-time records were set at Isla Perez between 30 September 1960 and 5 October 1983. Each dot is a new record. Record high maximum temperatureRecord high minimum temperature30 September 1960: Record high maximum temperature 39.4 C (102.9 F)5 August 1967: Record high maximum temperature 40.0 C (104.0 F)4 July 1970: Record high maximum temperature 40.6 C (105.1 F)5 October 1983: Record high minimum temperature 30.6 C (87.1 F)19601965197019751980
4 all-time records were set at Isla Perez between 30 September 1960 and 5 October 1983. Each dot is a new record.
When Isla Perez set new all-time records
DateKindDetail
1960-09-30Record high maximum temperatureRecord high maximum temperature 39.4 C (102.9 F)
1967-08-05Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)
1970-07-04Record high maximum temperatureRecord high maximum temperature 40.6 C (105.1 F)
1983-10-05Record high minimum temperatureRecord high minimum temperature 30.6 C (87.1 F)

Wettest Day of Each Month

Sep: 172.0 mm (6.8 in)
Record daily precipitation for each month at Isla Perez The wettest day on record for each calendar month at Isla Perez. The most was 172.0 mm (6.8 in) on 10 September 1956. 050100150200 Jan: 79.8 mm (3.1 in), 4 January 1947 Jan Feb: 69.9 mm (2.8 in), 22 February 1965 Feb Mar: 70.9 mm (2.8 in), 12 March 1930 Mar Apr: 49.8 mm (2.0 in), 12 April 1949 Apr May: 79.8 mm (3.1 in), 22 May 1950 May Jun: 119.9 mm (4.7 in), 4 June 1946 Jun Jul: 64.8 mm (2.6 in), 10 July 1936 Jul Aug: 125.0 mm (4.9 in), 27 August 1957 Aug Sep: 172.0 mm (6.8 in), 10 September 1956 Sep Oct: 114.8 mm (4.5 in), 2 October 1934 Oct Nov: 81.8 mm (3.2 in), 3 November 1934 Nov Dec: 52.8 mm (2.1 in), 19 December 1941 Dec
The wettest day on record for each calendar month at Isla Perez. The most was 172.0 mm (6.8 in) on 10 September 1956.
Record daily precipitation for each month at Isla Perez
MonthRecord daily precipitation (mm)Date
Jan79.8 mm (3.1 in)4 January 1947
Feb69.9 mm (2.8 in)22 February 1965
Mar70.9 mm (2.8 in)12 March 1930
Apr49.8 mm (2.0 in)12 April 1949
May79.8 mm (3.1 in)22 May 1950
Jun119.9 mm (4.7 in)4 June 1946
Jul64.8 mm (2.6 in)10 July 1936
Aug125.0 mm (4.9 in)27 August 1957
Sep172.0 mm (6.8 in)10 September 1956
Oct114.8 mm (4.5 in)2 October 1934
Nov81.8 mm (3.2 in)3 November 1934
Dec52.8 mm (2.1 in)19 December 1941

Period of Record Coverage

1930 to 1983
Days with data per year at Isla Perez 51 years of record at Isla Perez, 1930 to 1983. 9 years have data for under 90 percent of days and are left out of rankings: 1930, 1947, 1967, 1968, 1969, 1975, 1979, 1982 and others. 1930: 325 of 365 days1931: 360 of 365 days1932: 365 of 366 days1933: 365 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 364 of 366 days1937: 364 of 365 days1938: 364 of 365 days1939: 364 of 365 days1940: 364 of 366 days1941: 363 of 365 days1942: 362 of 365 days1943: 364 of 365 days1944: 364 of 366 days1945: 365 of 365 days1946: 363 of 365 days1947: 302 of 365 days1948: 331 of 366 days1949: 365 of 365 days1950: 334 of 365 days1951: 359 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 364 of 365 days1955: 363 of 365 days1956: 366 of 366 days1957: 362 of 365 days1958: 364 of 365 days1959: 363 of 365 days1960: 362 of 366 days1961: 362 of 365 days1962: 362 of 365 days1963: 361 of 365 days1964: 363 of 366 days1965: 360 of 365 days1966: 365 of 365 days1967: 304 of 365 days1968: 122 of 366 days1969: 90 of 365 days1970: 365 of 365 days1971: 332 of 365 days1973: 363 of 365 days1974: 365 of 365 days1975: 150 of 365 days1976: 365 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 91 of 365 days1982: 188 of 365 days1983: 64 of 365 days19301940195019601970
51 years of record at Isla Perez, 1930 to 1983. 9 years have data for under 90 percent of days and are left out of rankings: 1930, 1947, 1967, 1968, 1969, 1975, 1979, 1982 and others.
Days with data per year at Isla Perez
YearDays with dataShare of yearComplete
193032589%No
193136099%Yes
1932365100%Yes
1933365100%Yes
1934365100%Yes
1935365100%Yes
193636499%Yes
1937364100%Yes
1938364100%Yes
1939364100%Yes
194036499%Yes
194136399%Yes
194236299%Yes
1943364100%Yes
194436499%Yes
1945365100%Yes
194636399%Yes
194730283%No
194833190%Yes
1949365100%Yes
195033492%Yes
195135998%Yes
1952365100%Yes
1953365100%Yes
1954364100%Yes
195536399%Yes
1956366100%Yes
195736299%Yes
1958364100%Yes
195936399%Yes
196036299%Yes
196136299%Yes
196236299%Yes
196336199%Yes
196436399%Yes
196536099%Yes
1966365100%Yes
196730483%No
196812233%No
19699025%No
1970365100%Yes
197133291%Yes
197336399%Yes
1974365100%Yes
197515041%No
1976365100%Yes
1977364100%Yes
197836399%Yes
19799125%No
198218852%No
19836418%No

Latest Records

20
Latest records at Isla Perez
DateStationRecordValueBeat old record byOld record stoodSignificance
29 October 1983Isla Perez, MXdaily low min (Tie)20.0 C (68.0 F)tie25 years3 of 100 (Routine)
27 October 1983Isla Perez, MXdaily high max (Tie)35.0 C (95.0 F)tie52 years5 of 100 (Routine)
27 October 1983Isla Perez, MXdaily high min (Tie)26.7 C (80.1 F)tie52 years5 of 100 (Routine)
25 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)1.7 C (3.1 F)46 years29 of 100 (Routine)
24 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)1.7 C (3.1 F)44 years28 of 100 (Routine)
23 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)2.2 C (4.0 F)52 years34 of 100 (Routine)
22 October 1983Isla Perez, MXdaily high min27.8 C (82.0 F)1.1 C (2.0 F)52 years27 of 100 (Routine)
21 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)2.2 C (4.0 F)50 years34 of 100 (Routine)
20 October 1983Isla Perez, MXdaily high min27.8 C (82.0 F)1.1 C (2.0 F)44 years25 of 100 (Routine)
19 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)1.1 C (2.0 F)12 years15 of 100 (Routine)
17 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)1.7 C (3.1 F)48 years29 of 100 (Routine)
16 October 1983Isla Perez, MXdaily high min30.0 C (86.0 F)3.3 C (5.9 F)48 years40 of 100 (Notable)
15 October 1983Isla Perez, MXdaily high min29.4 C (84.9 F)2.2 C (4.0 F)48 years33 of 100 (Routine)
13 October 1983Isla Perez, MXall-time high min (Tie)30.6 C (87.1 F)tie0 years6 of 100 (Routine)
12 October 1983Isla Perez, MXall-time high min (Tie)30.6 C (87.1 F)tie0 years6 of 100 (Routine)
10 October 1983Isla Perez, MXall-time high min (Tie)30.6 C (87.1 F)tie0 years6 of 100 (Routine)
9 October 1983Isla Perez, MXall-time high min (Tie)30.6 C (87.1 F)tie0 years6 of 100 (Routine)
8 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)1.1 C (2.0 F)46 years26 of 100 (Routine)
7 October 1983Isla Perez, MXall-time high min (Tie)30.6 C (87.1 F)tie0 years6 of 100 (Routine)
6 October 1983Isla Perez, MXdaily high min28.9 C (84.0 F)0.6 C (1.1 F)45 years21 of 100 (Routine)

Climate Trend

39 complete years, 1931 to 1978
Annual mean temperature at Isla Perez as warming stripes, 1931 to 1978 One stripe for each of 39 complete years at Isla Perez, 1931 to 1978. Blue stripes are years cooler than the station's own mean of 26.6 C (80.0 F); red stripes are warmer. The coolest year was 1963, at 25.6 C (78.1 F), and the warmest was 1970, at 28.3 C (82.9 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1931: 26.4 C, -0.2 C from the station mean1932: 27.5 C, +0.8 C from the station mean1933: 26.9 C, +0.3 C from the station mean1934: 27.0 C, +0.3 C from the station mean1935: 26.6 C, 0.0 C from the station mean1936: 26.8 C, +0.2 C from the station mean1937: 27.0 C, +0.3 C from the station mean1938: 26.3 C, -0.4 C from the station mean1939: 26.7 C, +0.1 C from the station mean1940: 26.2 C, -0.5 C from the station mean1941: 26.7 C, 0.0 C from the station mean1942: 26.3 C, -0.4 C from the station mean1943: 26.4 C, -0.3 C from the station mean1944: 26.4 C, -0.3 C from the station mean1945: 26.6 C, 0.0 C from the station mean1946: 26.9 C, +0.2 C from the station mean1949: 26.9 C, +0.2 C from the station mean1951: 25.9 C, -0.7 C from the station mean1952: 26.2 C, -0.5 C from the station mean1953: 26.7 C, 0.0 C from the station mean1954: 26.3 C, -0.3 C from the station mean1955: 26.3 C, -0.3 C from the station mean1956: 26.3 C, -0.3 C from the station mean1957: 26.7 C, +0.1 C from the station mean1958: 26.5 C, -0.2 C from the station mean1959: 26.5 C, -0.1 C from the station mean1960: 25.9 C, -0.7 C from the station mean1961: 25.7 C, -0.9 C from the station mean1962: 26.0 C, -0.7 C from the station mean1963: 25.6 C, -1.0 C from the station mean1964: 25.9 C, -0.7 C from the station mean1965: 26.1 C, -0.5 C from the station mean1966: 27.9 C, +1.2 C from the station mean1970: 28.3 C, +1.7 C from the station mean1973: 28.1 C, +1.4 C from the station mean1974: 27.7 C, +1.1 C from the station mean1976: 26.8 C, +0.2 C from the station mean1977: 27.1 C, +0.4 C from the station mean1978: 27.1 C, +0.5 C from the station mean1931193519401945195019551960196519701975
One stripe for each of 39 complete years at Isla Perez, 1931 to 1978. Blue stripes are years cooler than the station's own mean of 26.6 C (80.0 F); red stripes are warmer. The coolest year was 1963, at 25.6 C (78.1 F), and the warmest was 1970, at 28.3 C (82.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Isla Perez as warming stripes, 1931 to 1978
YearAnnual mean temperatureDifference from the station mean
193126.4 C-0.21 C
193227.5 C+0.85 C
193326.9 C+0.27 C
193427.0 C+0.32 C
193526.6 C-0.03 C
193626.8 C+0.18 C
193727.0 C+0.31 C
193826.3 C-0.36 C
193926.7 C+0.09 C
194026.2 C-0.48 C
194126.7 C+0.03 C
194226.3 C-0.39 C
194326.4 C-0.26 C
194426.4 C-0.27 C
194526.6 C-0.04 C
194626.9 C+0.24 C
194926.9 C+0.24 C
195125.9 C-0.74 C
195226.2 C-0.46 C
195326.7 C+0.01 C
195426.3 C-0.31 C
195526.3 C-0.32 C
195626.3 C-0.34 C
195726.7 C+0.06 C
195826.5 C-0.16 C
195926.5 C-0.14 C
196025.9 C-0.70 C
196125.7 C-0.94 C
196226.0 C-0.67 C
196325.6 C-1.04 C
196425.9 C-0.74 C
196526.1 C-0.52 C
196627.9 C+1.24 C
197028.3 C+1.66 C
197328.1 C+1.44 C
197427.7 C+1.10 C
197626.8 C+0.20 C
197727.1 C+0.41 C
197827.1 C+0.47 C

The fitted trend in annual mean temperature here over 1931 to 1978 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Isla Perez
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (-0.1 to 0.2) per decade0.2 F (-0.1 to 0.4) per decade1931 to 197839Not clearly different from zero
Mean daily maximum0.3 C (0.1 to 0.5) per decade0.6 F (0.2 to 1.0) per decade1931 to 197839Rise
Mean daily minimum-0.2 C (-0.3 to -0.1) per decade-0.3 F (-0.5 to -0.1) per decade1931 to 197839Fall

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

1930 to 1983
Yearly extremes at Isla Perez: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)197036.1 C (97.0 F)51
Coldest night (TNn)10.0 C (50.0 F)193115.6 C (60.1 F)51
Wettest day (Rx1day)172.0 mm (6.8 in)195654.9 mm (2.2 in)51
Wettest five days (Rx5day)199.2 mm (7.8 in)193481.6 mm (3.2 in)51
Longest dry spell (CDD)275 days198275 days51

Hottest day (TXx)

Hottest day (TXx) at Isla Perez by year The hottest day of the year at Isla Perez, 1930 to 1983. The record is 40.6 C (105.1 F) in 1970, marked on the chart; the median year is 36.1 C (97.0 F). 30354045193019401950196019701980Record: 40.6 C (105.1 F) in 1970
The hottest day of the year at Isla Perez, 1930 to 1983. The record is 40.6 C (105.1 F) in 1970, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Isla Perez by year
YearHottest day (TXx)
193036.1 C (97.0 F)
193136.7 C (98.1 F)
193237.8 C (100.0 F)
193336.1 C (97.0 F)
193435.0 C (95.0 F)
193536.1 C (97.0 F)
193636.1 C (97.0 F)
193735.6 C (96.1 F)
193835.0 C (95.0 F)
193935.6 C (96.1 F)
194035.0 C (95.0 F)
194136.1 C (97.0 F)
194235.0 C (95.0 F)
194335.6 C (96.1 F)
194435.0 C (95.0 F)
194535.6 C (96.1 F)
194636.1 C (97.0 F)
194737.2 C (99.0 F)
194835.0 C (95.0 F)
194935.6 C (96.1 F)
195035.0 C (95.0 F)
195135.0 C (95.0 F)
195236.1 C (97.0 F)
195335.6 C (96.1 F)
195436.1 C (97.0 F)
195535.6 C (96.1 F)
195635.0 C (95.0 F)
195737.2 C (99.0 F)
195836.7 C (98.1 F)
195935.0 C (95.0 F)
196039.4 C (102.9 F)
196134.4 C (93.9 F)
196237.2 C (99.0 F)
196335.0 C (95.0 F)
196435.0 C (95.0 F)
196536.1 C (97.0 F)
196639.4 C (102.9 F)
196740.0 C (104.0 F)
196838.3 C (100.9 F)
196937.8 C (100.0 F)
197040.6 C (105.1 F)
197138.9 C (102.0 F)
197337.8 C (100.0 F)
197438.9 C (102.0 F)
197536.7 C (98.1 F)
197636.7 C (98.1 F)
197736.7 C (98.1 F)
197836.7 C (98.1 F)
197930.0 C (86.0 F)
198230.6 C (87.1 F)
198335.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at Isla Perez by year The coldest night of the year at Isla Perez, 1930 to 1983. The record is 10.0 C (50.0 F) in 1931, marked on the chart; the median year is 15.6 C (60.1 F). 10152025193019401950196019701980Record: 10.0 C (50.0 F) in 1931
The coldest night of the year at Isla Perez, 1930 to 1983. The record is 10.0 C (50.0 F) in 1931, marked on the chart; the median year is 15.6 C (60.1 F).
Coldest night (TNn) at Isla Perez by year
YearColdest night (TNn)
193016.7 C (62.1 F)
193110.0 C (50.0 F)
193217.2 C (63.0 F)
193317.8 C (64.0 F)
193415.6 C (60.1 F)
193515.0 C (59.0 F)
193617.2 C (63.0 F)
193715.6 C (60.1 F)
193815.0 C (59.0 F)
193917.8 C (64.0 F)
194015.6 C (60.1 F)
194113.9 C (57.0 F)
194215.6 C (60.1 F)
194315.0 C (59.0 F)
194415.6 C (60.1 F)
194516.7 C (62.1 F)
194615.0 C (59.0 F)
194714.4 C (57.9 F)
194814.4 C (57.9 F)
194916.7 C (62.1 F)
195016.7 C (62.1 F)
195111.7 C (53.1 F)
195215.0 C (59.0 F)
195313.9 C (57.0 F)
195413.9 C (57.0 F)
195515.0 C (59.0 F)
195613.3 C (55.9 F)
195715.6 C (60.1 F)
195815.0 C (59.0 F)
195915.6 C (60.1 F)
196015.0 C (59.0 F)
196116.7 C (62.1 F)
196214.4 C (57.9 F)
196314.4 C (57.9 F)
196414.4 C (57.9 F)
196515.0 C (59.0 F)
196616.1 C (61.0 F)
196717.2 C (63.0 F)
196817.2 C (63.0 F)
196920.0 C (68.0 F)
197015.6 C (60.1 F)
197116.7 C (62.1 F)
197315.0 C (59.0 F)
197415.6 C (60.1 F)
197515.6 C (60.1 F)
197615.6 C (60.1 F)
197710.6 C (51.1 F)
197813.9 C (57.0 F)
197915.6 C (60.1 F)
198220.6 C (69.1 F)
198317.8 C (64.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Isla Perez by year The wettest day of the year at Isla Perez, 1930 to 1983. The record is 172.0 mm (6.8 in) in 1956, marked on the chart; the median year is 54.9 mm (2.2 in). 050100150200193019401950196019701980Record: 172.0 mm (6.8 in) in 1956
The wettest day of the year at Isla Perez, 1930 to 1983. The record is 172.0 mm (6.8 in) in 1956, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at Isla Perez by year
YearWettest day (Rx1day)
193070.9 mm (2.8 in)
193171.9 mm (2.8 in)
193251.1 mm (2.0 in)
193339.9 mm (1.6 in)
1934114.8 mm (4.5 in)
193535.8 mm (1.4 in)
193664.8 mm (2.6 in)
193773.9 mm (2.9 in)
193859.9 mm (2.4 in)
193939.9 mm (1.6 in)
194049.8 mm (2.0 in)
194162.0 mm (2.4 in)
194279.8 mm (3.1 in)
194334.8 mm (1.4 in)
194479.8 mm (3.1 in)
194595.0 mm (3.7 in)
1946119.9 mm (4.7 in)
194779.8 mm (3.1 in)
1948114.8 mm (4.5 in)
194949.8 mm (2.0 in)
195079.8 mm (3.1 in)
195198.3 mm (3.9 in)
195266.8 mm (2.6 in)
195349.8 mm (2.0 in)
195437.8 mm (1.5 in)
195554.9 mm (2.2 in)
1956172.0 mm (6.8 in)
1957127.8 mm (5.0 in)
195852.8 mm (2.1 in)
195974.9 mm (2.9 in)
196048.8 mm (1.9 in)
196130.0 mm (1.2 in)
196279.8 mm (3.1 in)
196364.8 mm (2.6 in)
196449.8 mm (2.0 in)
196569.9 mm (2.8 in)
196677.0 mm (3.0 in)
196727.9 mm (1.1 in)
196837.8 mm (1.5 in)
19699.9 mm (0.39 in)
197063.0 mm (2.5 in)
197139.9 mm (1.6 in)
197317.8 mm (0.7 in)
197466.8 mm (2.6 in)
197511.9 mm (0.5 in)
197634.8 mm (1.4 in)
197726.9 mm (1.1 in)
197830.0 mm (1.2 in)
197919.8 mm (0.8 in)
19820.0 mm (0.00 in)
198315.0 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Isla Perez by year The wettest five days of the year at Isla Perez, 1930 to 1983. The record is 199.2 mm (7.8 in) in 1934, marked on the chart; the median year is 81.6 mm (3.2 in). 050100150200193019401950196019701980Record: 199.2 mm (7.8 in) in 1934
The wettest five days of the year at Isla Perez, 1930 to 1983. The record is 199.2 mm (7.8 in) in 1934, marked on the chart; the median year is 81.6 mm (3.2 in).
Wettest five days (Rx5day) at Isla Perez by year
YearWettest five days (Rx5day)
193070.9 mm (2.8 in)
193180.3 mm (3.2 in)
1932102.4 mm (4.0 in)
193341.7 mm (1.6 in)
1934199.2 mm (7.8 in)
193539.4 mm (1.6 in)
1936140.3 mm (5.5 in)
1937104.6 mm (4.1 in)
1938107.7 mm (4.2 in)
193939.9 mm (1.6 in)
1940132.4 mm (5.2 in)
194187.6 mm (3.4 in)
194283.2 mm (3.3 in)
194349.8 mm (2.0 in)
194489.2 mm (3.5 in)
1945136.7 mm (5.4 in)
1946167.4 mm (6.6 in)
1947114.6 mm (4.5 in)
1948175.0 mm (6.9 in)
194955.6 mm (2.2 in)
195085.1 mm (3.4 in)
1951126.0 mm (5.0 in)
1952130.1 mm (5.1 in)
195380.5 mm (3.2 in)
195484.1 mm (3.3 in)
195574.5 mm (2.9 in)
1956181.7 mm (7.2 in)
1957183.4 mm (7.2 in)
195875.7 mm (3.0 in)
195998.8 mm (3.9 in)
196056.9 mm (2.2 in)
196160.2 mm (2.4 in)
196282.1 mm (3.2 in)
196397.6 mm (3.8 in)
196472.9 mm (2.9 in)
1965148.4 mm (5.8 in)
196690.0 mm (3.5 in)
196727.9 mm (1.1 in)
196840.1 mm (1.6 in)
19699.9 mm (0.39 in)
197081.6 mm (3.2 in)
197139.9 mm (1.6 in)
197317.8 mm (0.7 in)
1974138.4 mm (5.4 in)
197511.9 mm (0.5 in)
197634.8 mm (1.4 in)
197726.9 mm (1.1 in)
197844.0 mm (1.7 in)
197939.6 mm (1.6 in)
19820.0 mm (0.00 in)
198333.6 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Isla Perez by year The longest dry spell of the year at Isla Perez, 1930 to 1983. The record is 275 days in 1982, marked on the chart; the median year is 75 days. 0100200300193019401950196019701980Record: 275 days in 1982
The longest dry spell of the year at Isla Perez, 1930 to 1983. The record is 275 days in 1982, marked on the chart; the median year is 75 days.
Longest dry spell (CDD) at Isla Perez by year
YearLongest dry spell (CDD)
1930194 days
193174 days
193226 days
1933115 days
193459 days
1935110 days
193675 days
193781 days
1938148 days
193959 days
194046 days
194141 days
194259 days
1943226 days
1944167 days
1945160 days
194673 days
194737 days
194895 days
194971 days
195046 days
1951113 days
195267 days
1953125 days
195456 days
1955118 days
195667 days
195747 days
195885 days
195972 days
1960116 days
1961103 days
196285 days
1963157 days
196497 days
196587 days
196645 days
196797 days
196852 days
196925 days
1970119 days
197164 days
1973128 days
1974133 days
1975216 days
197642 days
197767 days
197858 days
197939 days
1982275 days
198332 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

43 years, 1930 to 1978

A day with at least 59.9 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 164.4 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Isla Perez: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years59.9 mm (2.4 in)
5 years87.8 mm (3.5 in)
10 years106.3 mm (4.2 in)
25 years129.7 mm (5.1 in)
50 years147.1 mm (5.8 in)Longer than the 43 years of record
100 years164.4 mm (6.5 in)Longer than the 43 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, 43 years of values from 1930 to 1978.

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: 172.0 mm (6.8 in) in 1956; 127.8 mm (5.0 in) in 1957; 119.9 mm (4.7 in) in 1946.

Download the Data

  • Data for Isla Perez standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Isla Perez 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 (2025-12-31).