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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Isla Perez Threshold Days by Year (MXN00004016)

11 fixed thresholds counted per year at Isla Perez (MXN00004016): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Isla Perez Thresholds

  • Isla Perez: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1934 with 17.
  • Isla Perez: days with a maximum temperature at or above 30 C (86 F) in 42 years, most in 1974 with 291.
  • Isla Perez: days with a maximum temperature at or above 90 F (32.2 C) in 42 years, most in 1973 with 198.
  • Isla Perez: nights with a minimum temperature at or above 20 C (68 F) in 42 years, most in 1949 with 360.
  • 11 fixed thresholds have at least one qualifying day at Isla Perez.
42 years with a qualifying day
Days at or above 30 C (86 F) per year at Isla Perez Days per year at Isla Perez with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 291 in 1974. 01002003001931: 1701932: 1931933: 1831934: 1851935: 1821936: 1901937: 1851938: 1611939: 1861940: 1681941: 1791942: 1821943: 1651944: 1761945: 1801946: 2081948: 1771949: 1931950: 1601951: 1661952: 1641953: 2191954: 1931955: 1911956: 2061957: 2011958: 1921959: 2071960: 1661961: 1161962: 1531963: 1361964: 1491965: 1591966: 2641970: 2811971: 2631973: 2861974: 2911976: 2351977: 2441978: 253193119361941194619521957196219701977
Days per year at Isla Perez with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 291 in 1974.
Days at or above 30 C (86 F) per year at Isla Perez
YearDaysDecade average
1931170181.7
1932193181.7
1933183181.7
1934185181.7
1935182181.7
1936190181.7
1937185181.7
1938161181.7
1939186181.7
1940168180.9
1941179180.9
1942182180.9
1943165180.9
1944176180.9
1945180180.9
1946208180.9
1948177180.9
1949193180.9
1950160189.9
1951166189.9
1952164189.9
1953219189.9
1954193189.9
1955191189.9
1956206189.9
1957201189.9
1958192189.9
1959207189.9
1960166163.3
1961116163.3
1962153163.3
1963136163.3
1964149163.3
1965159163.3
1966264163.3
1970281264.7
1971263264.7
1973286264.7
1974291264.7
1976235264.7
1977244264.7
1978253264.7
First to last qualifying date each year at Isla Perez For each year, a bar from the first to the last day at Isla Perez meeting 30 C (86 F). 1931: 26 January 1931 to 31 December 19311932: 8 January 1932 to 19 November 19321933: 5 February 1933 to 6 December 19331934: 23 January 1934 to 29 November 19341935: 2 January 1935 to 24 November 19351936: 28 March 1936 to 10 December 19361937: 25 January 1937 to 19 November 19371938: 31 January 1938 to 13 November 19381939: 21 February 1939 to 26 December 19391940: 7 January 1940 to 20 December 19401941: 3 April 1941 to 13 December 19411942: 4 January 1942 to 7 December 19421943: 21 March 1943 to 25 December 19431944: 11 February 1944 to 20 November 19441945: 22 February 1945 to 10 December 19451946: 22 January 1946 to 20 December 19461948: 30 January 1948 to 25 December 19481949: 10 February 1949 to 15 December 19491950: 14 March 1950 to 3 November 19501951: 19 March 1951 to 21 December 19511952: 4 March 1952 to 18 November 19521953: 22 February 1953 to 20 December 19531954: 17 February 1954 to 22 November 19541955: 18 January 1955 to 7 December 19551956: 10 February 1956 to 18 December 19561957: 6 January 1957 to 24 October 19571958: 11 March 1958 to 10 December 19581959: 4 February 1959 to 27 November 19591960: 15 January 1960 to 21 November 19601961: 8 March 1961 to 19 December 19611962: 2 March 1962 to 8 November 19621963: 1 April 1963 to 9 November 19631964: 18 February 1964 to 19 November 19641965: 14 March 1965 to 24 December 19651966: 1 January 1966 to 31 December 19661970: 3 January 1970 to 31 December 19701971: 4 January 1971 to 29 November 19711973: 1 January 1973 to 29 December 19731974: 1 January 1974 to 31 December 19741976: 6 January 1976 to 28 November 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781931193719431950195619621971JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Isla Perez meeting 30 C (86 F).
First to last qualifying date each year at Isla Perez
YearFirst dateLast date
19311931-01-261931-12-31
19321932-01-081932-11-19
19331933-02-051933-12-06
19341934-01-231934-11-29
19351935-01-021935-11-24
19361936-03-281936-12-10
19371937-01-251937-11-19
19381938-01-311938-11-13
19391939-02-211939-12-26
19401940-01-071940-12-20
19411941-04-031941-12-13
19421942-01-041942-12-07
19431943-03-211943-12-25
19441944-02-111944-11-20
19451945-02-221945-12-10
19461946-01-221946-12-20
19481948-01-301948-12-25
19491949-02-101949-12-15
19501950-03-141950-11-03
19511951-03-191951-12-21
19521952-03-041952-11-18
19531953-02-221953-12-20
19541954-02-171954-11-22
19551955-01-181955-12-07
19561956-02-101956-12-18
19571957-01-061957-10-24
19581958-03-111958-12-10
19591959-02-041959-11-27
19601960-01-151960-11-21
19611961-03-081961-12-19
19621962-03-021962-11-08
19631963-04-011963-11-09
19641964-02-181964-11-19
19651965-03-141965-12-24
19661966-01-011966-12-31
19701970-01-031970-12-31
19711971-01-041971-11-29
19731973-01-011973-12-29
19741974-01-011974-12-31
19761976-01-061976-11-28
19771977-01-011977-12-31
19781978-01-011978-12-31

Every Fixed Threshold

Fixed thresholds at Isla Perez
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days422911974253
35 C (95 F): Days41125197054
40 C (104 F): Days1519705
90 F (32.2 C): Days421981973127
100 F (37.8 C): Days734197013
20 C (68 F): Tropical nights (min423601949335
25 C (77 F): Days with min422151970170
10 mm (0.39 in): Days with 10 mm or more rain4317193410
25 mm (0.98 in): Days with 25 mm or more rain411019341
50 mm (1.97 in): Days with 50 mm or more rain27419342
100 mm (3.94 in): Days with 100 mm or more rain5219572

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

  • 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). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).