San Blas Threshold Days by Year (MXN00025082)

15 fixed thresholds counted per year at San Blas (MXN00025082): 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 39 years, most in 1999 with 350.
San Blas: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 1999 with 251.
San Blas: days with a maximum temperature at or above 40 C (104 F) in 39 years, most in 1999 with 132.
San Blas: days with a maximum temperature at or above 90 F (32.2 C) in 39 years, most in 1999 with 310.
15 fixed thresholds have at least one qualifying day at San Blas.

Days at or above 30 C (86 F)

39 years with a qualifying day

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 350 in 1999.

Days at or above 30 C (86 F) per year at San Blas
Year	Days	Decade average
1961	255	254.9
1962	264	254.9
1963	263	254.9
1964	236	254.9
1965	261	254.9
1966	261	254.9
1967	264	254.9
1968	248	254.9
1969	242	254.9
1970	246	254.6
1971	237	254.6
1972	240	254.6
1973	237	254.6
1974	231	254.6
1975	227	254.6
1976	256	254.6
1977	321	254.6
1978	278	254.6
1979	273	254.6
1980	306	305.9
1981	304	305.9
1982	309	305.9
1983	312	305.9
1984	317	305.9
1986	327	305.9
1987	279	305.9
1988	294	305.9
1989	305	305.9
1990	303	315.1
1991	293	315.1
1992	289	315.1
1993	305	315.1
1994	316	315.1
1995	330	315.1
1996	338	315.1
1997	308	315.1
1998	319	315.1
1999	350	315.1
2000	350	350

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
Year	First date	Last date
1961	1961-01-09	1961-12-02
1962	1962-01-17	1962-12-10
1963	1963-01-24	1963-12-08
1964	1964-02-10	1964-11-30
1965	1965-01-17	1965-12-30
1966	1966-01-08	1966-12-06
1967	1967-01-16	1967-11-30
1968	1968-01-23	1968-12-15
1969	1969-01-07	1969-12-15
1970	1970-01-24	1970-12-09
1971	1971-01-16	1971-12-25
1972	1972-02-11	1972-11-08
1973	1973-01-29	1973-12-12
1974	1974-02-12	1974-11-25
1975	1975-02-13	1975-11-17
1976	1976-01-17	1976-12-28
1977	1977-01-03	1977-12-30
1978	1978-01-03	1978-12-18
1979	1979-02-10	1979-12-25
1980	1980-01-05	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-16	1982-12-22
1983	1983-01-05	1983-12-31
1984	1984-01-01	1984-12-24
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-30
1988	1988-01-04	1988-12-18
1989	1989-01-04	1989-12-28
1990	1990-01-09	1990-12-14
1991	1991-01-03	1991-12-27
1992	1992-01-23	1992-12-30
1993	1993-01-02	1993-12-31
1994	1994-01-01	1994-12-21
1995	1995-01-08	1995-12-31
1996	1996-01-05	1996-12-31
1997	1997-01-02	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31

Every Fixed Threshold

Fixed thresholds at San Blas
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	350	1999	350
35 C (95 F): Days	39	251	1999	227
40 C (104 F): Days	39	132	1999	123
45 C (113 F): Days	12	11	2000	11
90 F (32.2 C): Days	39	310	1999	310
100 F (37.8 C): Days	39	177	1999	171
110 F (43.3 C): Days	22	34	2000	34
0 C (32 F): Frost days (min	10	5	1964	1
20 C (68 F): Tropical nights (min	39	150	1977	141
25 C (77 F): Days with min	39	78	1980	50
10 mm (0.39 in): Days with 10 mm or more rain	39	24	1984	9
25 mm (0.98 in): Days with 25 mm or more rain	39	13	1990	7
50 mm (1.97 in): Days with 50 mm or more rain	30	5	1982	3
100 mm (3.94 in): Days with 100 mm or more rain	6	2	1976	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1995	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

San Blas Threshold Days by Year (MXN00025082)

Key Facts for San Blas Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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