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Built 2026-10-19 (19 October 2026)

San Blas Threshold Days by Year (MXN00018029)

12 fixed thresholds counted per year at San Blas (MXN00018029): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Blas Thresholds

  • San Blas: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 2001 with 338.
  • San Blas: days with a maximum temperature at or above 35 C (95 F) in 54 years, most in 2001 with 161.
  • San Blas: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 2001 with 239.
  • San Blas: days with 10 mm (0.39 in) or more of precipitation in 54 years, most in 2008 with 52.
  • 12 fixed thresholds have at least one qualifying day at San Blas.
54 years with a qualifying day
Days at or above 30 C (86 F) per year at San Blas Days per year at San Blas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 338 in 2001. 01002003004001940: 2791941: 2981942: 2501943: 2071944: 1971945: 2371946: 2741947: 1791956: 2181962: 2591963: 2571964: 2221965: 2451966: 2511967: 2451968: 2301969: 2601970: 2301971: 2341972: 2651973: 2401974: 2181975: 1841976: 1971977: 2431978: 2451979: 1901980: 2601981: 2611982: 2791983: 2301984: 2751985: 2161986: 2821989: 2841990: 2951991: 2881992: 2971993: 2851994: 2831995: 2641996: 2791998: 2752001: 3382002: 2902003: 2792004: 2392005: 2422006: 2612007: 2152008: 2212009: 2192010: 1982011: 208194019461965197119771983199119982006
Days per year at San Blas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 338 in 2001.
Days at or above 30 C (86 F) per year at San Blas
YearDaysDecade average
1940279240.1
1941298240.1
1942250240.1
1943207240.1
1944197240.1
1945237240.1
1946274240.1
1947179240.1
1956218218
1962259246.1
1963257246.1
1964222246.1
1965245246.1
1966251246.1
1967245246.1
1968230246.1
1969260246.1
1970230224.6
1971234224.6
1972265224.6
1973240224.6
1974218224.6
1975184224.6
1976197224.6
1977243224.6
1978245224.6
1979190224.6
1980260260.9
1981261260.9
1982279260.9
1983230260.9
1984275260.9
1985216260.9
1986282260.9
1989284260.9
1990295283.3
1991288283.3
1992297283.3
1993285283.3
1994283283.3
1995264283.3
1996279283.3
1998275283.3
2001338256
2002290256
2003279256
2004239256
2005242256
2006261256
2007215256
2008221256
2009219256
2010198203
2011208203
First to last qualifying date each year at San Blas For each year, a bar from the first to the last day at San Blas meeting 30 C (86 F). 1940: 2 January 1940 to 27 December 19401941: 1 January 1941 to 29 December 19411942: 1 January 1942 to 31 December 19421943: 4 January 1943 to 21 December 19431944: 15 January 1944 to 25 December 19441945: 3 January 1945 to 29 December 19451946: 5 January 1946 to 31 December 19461947: 1 January 1947 to 15 November 19471956: 29 January 1956 to 10 December 19561962: 6 January 1962 to 31 December 19621963: 23 January 1963 to 28 December 19631964: 4 January 1964 to 22 December 19641965: 5 January 1965 to 31 December 19651966: 8 January 1966 to 17 December 19661967: 18 January 1967 to 24 December 19671968: 9 January 1968 to 15 December 19681969: 11 January 1969 to 26 December 19691970: 2 January 1970 to 20 December 19701971: 21 January 1971 to 27 December 19711972: 16 January 1972 to 27 December 19721973: 4 January 1973 to 20 December 19731974: 13 January 1974 to 28 November 19741975: 14 January 1975 to 21 December 19751976: 10 January 1976 to 20 December 19761977: 7 January 1977 to 29 December 19771978: 8 January 1978 to 14 December 19781979: 3 January 1979 to 26 December 19791980: 4 January 1980 to 31 December 19801981: 2 January 1981 to 27 December 19811982: 3 January 1982 to 17 December 19821983: 12 February 1983 to 31 December 19831984: 6 January 1984 to 28 December 19841985: 22 January 1985 to 8 December 19851986: 12 January 1986 to 20 December 19861989: 4 January 1989 to 29 December 19891990: 2 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 5 January 1992 to 31 December 19921993: 1 January 1993 to 28 December 19931994: 1 January 1994 to 26 December 19941995: 6 January 1995 to 20 December 19951996: 9 January 1996 to 27 December 19961998: 1 January 1998 to 28 December 19982001: 1 January 2001 to 30 December 20012002: 1 January 2002 to 31 December 20022003: 3 January 2003 to 31 December 20032004: 1 January 2004 to 30 December 20042005: 1 January 2005 to 23 December 20052006: 2 January 2006 to 31 December 20062007: 10 January 2007 to 30 November 20072008: 3 January 2008 to 29 November 20082009: 13 January 2009 to 31 December 20092010: 1 January 2010 to 6 December 20102011: 18 March 2011 to 4 December 201119401947196719741981199019982007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Blas meeting 30 C (86 F).
First to last qualifying date each year at San Blas
YearFirst dateLast date
19401940-01-021940-12-27
19411941-01-011941-12-29
19421942-01-011942-12-31
19431943-01-041943-12-21
19441944-01-151944-12-25
19451945-01-031945-12-29
19461946-01-051946-12-31
19471947-01-011947-11-15
19561956-01-291956-12-10
19621962-01-061962-12-31
19631963-01-231963-12-28
19641964-01-041964-12-22
19651965-01-051965-12-31
19661966-01-081966-12-17
19671967-01-181967-12-24
19681968-01-091968-12-15
19691969-01-111969-12-26
19701970-01-021970-12-20
19711971-01-211971-12-27
19721972-01-161972-12-27
19731973-01-041973-12-20
19741974-01-131974-11-28
19751975-01-141975-12-21
19761976-01-101976-12-20
19771977-01-071977-12-29
19781978-01-081978-12-14
19791979-01-031979-12-26
19801980-01-041980-12-31
19811981-01-021981-12-27
19821982-01-031982-12-17
19831983-02-121983-12-31
19841984-01-061984-12-28
19851985-01-221985-12-08
19861986-01-121986-12-20
19891989-01-041989-12-29
19901990-01-021990-12-31
19911991-01-011991-12-31
19921992-01-051992-12-31
19931993-01-011993-12-28
19941994-01-011994-12-26
19951995-01-061995-12-20
19961996-01-091996-12-27
19981998-01-011998-12-28
20012001-01-012001-12-30
20022002-01-012002-12-31
20032003-01-032003-12-31
20042004-01-012004-12-30
20052005-01-012005-12-23
20062006-01-022006-12-31
20072007-01-102007-11-30
20082008-01-032008-11-29
20092009-01-132009-12-31
20102010-01-012010-12-06
20112011-03-182011-12-04

Every Fixed Threshold

Fixed thresholds at San Blas
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days543382001208
35 C (95 F): Days5416120017
40 C (104 F): Days41920021
90 F (32.2 C): Days54239200184
100 F (37.8 C): Days345320021
20 C (68 F): Tropical nights (min512551984198
25 C (77 F): Days with min51117198270
10 mm (0.39 in): Days with 10 mm or more rain5452200840
25 mm (0.98 in): Days with 25 mm or more rain5430201130
50 mm (1.97 in): Days with 50 mm or more rain5318201118
100 mm (3.94 in): Days with 100 mm or more rain39520012
200 mm (7.87 in): Days with 200 mm or more rain4219691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

Download the Data

  • Data for San Blas 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 (2026-10-15).