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Mexico · 1991–2020

Best time to visit
Santo Tomás.

January leads for comfortable weather in Santo Tomás: typically 24.3°C by day, 6°C at night, with 10 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high24.3°C

Typical low6°C

Rain in January10 mm

Comfort

January

January · February · December

83climate match

Beach

May

May · June · September

73climate match

Outdoors

December

December · January · February

82climate match

The weakest month is August, scoring 57 against January’s 83 — days average 35.8°C, 12° above the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

8324.3° / 6°

Feb

8324.7° / 6.9°

Mar

7926.4° / 8°

Apr

7628.2° / 9.3°

May

7629.2° / 11.5°

Jun

7231.6° / 13.4°

Jul

6235° / 16°

Aug

5735.8° / 17.5°

Sep

6134.7° / 16.9°

Oct

7331.1° / 12.8°

Nov

7827.1° / 8.7°

Dec

8223.4° / 5.9°

Monthly climate evidence for Santo Tomás — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	24.3°C	6°C	10 mm	1.6	10 h 34	83	Good coverage
February	24.7°C	6.9°C	12 mm	1.7	11 h 11	83	Good coverage
March	26.4°C	8°C	5 mm	0.9	11 h 55	79	Good coverage
April	28.2°C	9.3°C	1 mm	0.2	12 h 47	76	Good coverage
May	29.2°C	11.5°C	0 mm	0	13 h 30	76	Good coverage
June	31.6°C	13.4°C	0 mm	0	13 h 52	72	Good coverage
July	35°C	16°C	2 mm	0.2	13 h 43	62	Good coverage
August	35.8°C	17.5°C	13 mm	1.2	13 h 07	57	Good coverage
September	34.7°C	16.9°C	16 mm	1.1	12 h 17	61	Good coverage
October	31.1°C	12.8°C	9 mm	0.5	11 h 28	73	Good coverage
November	27.1°C	8.7°C	7 mm	0.9	10 h 45	78	Good coverage
December	23.4°C	5.9°C	20 mm	1.8	10 h 24	82	Good coverage

Records at GUSTAVO DIAZ ORDAZ, 1971–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	35.0°C25 Jan 2003	-0.6°C17 Jan 2007	50 mm8 Jan 1974	79 mm1981 · driest 0 mm in 1999	41
February	37.2°C1 Feb 2003	-1.7°C19 Feb 1990	61 mm20 Feb 1973	95 mm1973 · driest 0 mm in 1989	41
March	38.9°C1 Mar 2009	0.6°C29 Mar 2007	51 mm2 Mar 1983	51 mm1983 · driest 0 mm in 1997	41
April	40.0°C13 Apr 2008	0.6°C10 Apr 2001	9 mm6 Apr 1983	12 mm1983 · driest 0 mm in 1977	41
May	40.0°C17 May 1984	5.0°C4 May 2010	16 mm4 May 1973	16 mm1973 · driest 0 mm in 1992	40
June	43.3°C23 Jun 1992	7.2°C3 Jun 1999	0 mm9 Jun 2001	0 mm2001 · driest 0 mm in 2001	41
July	43.9°C22 Jul 2005	9.4°C5 Jul 1982	27 mm5 Jul 1982	44 mm1984 · driest 0 mm in 2002	41
August	43.9°C28 Aug 2009	8.9°C8 Aug 1988	60 mm16 Aug 1983	109 mm1983 · driest 0 mm in 2011	41
September	43.3°C1 Sep 2002	8.9°C18 Sep 2006	55 mm5 Sep 1997	129 mm1997 · driest 0 mm in 2011	41
October	42.2°C12 Oct 1999	5.0°C27 Oct 1996	106 mm4 Oct 1989	112 mm2006 · driest 0 mm in 1971	41
November	37.2°C17 Nov 2002	1.1°C19 Nov 1971	49 mm5 Nov 1995	52 mm1995 · driest 0 mm in 1999	41
December	32.8°C6 Dec 2000	-2.2°C27 Dec 1988	119 mm5 Dec 1994	198 mm1994 · driest 0 mm in 1985	40

Typical days per month at GUSTAVO DIAZ ORDAZ, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	15	4	<1	<1
February	14	3	<1	<1
March	20	7	0	<1
April	24	12	0	0
May	28	14	0	0
June	29	21	0	0
July	31	29	0	0
August	31	30	0	<1
September	30	28	0	<1
October	29	19	0	<1
November	21	9	0	<1
December	12	2	<1	<1

How often, not how much — every day in GUSTAVO DIAZ ORDAZ’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	81%	6%	1%	1%	21.4–26.2°C
February	88%	5%	1%	2%	23.0–26.8°C
March	95%	3%	<1%	<1%	23.1–28.4°C
April	99%	<1%	0%	0%	25.2–30.3°C
May	100%	<1%	<1%	0%	26.6–31.4°C
June	100%	0%	0%	0%	28.9–33.8°C
July	99%	1%	<1%	<1%	32.2–36.7°C
August	97%	3%	1%	<1%	33.8–37.0°C
September	97%	3%	2%	<1%	31.8–36.1°C
October	98%	2%	<1%	<1%	28.6–33.7°C
November	95%	3%	<1%	1%	24.9–28.8°C
December	81%	6%	2%	3%	21.2–25.6°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1972Each stripe is one year’s mean temperature against the 37-year average. Warmest: 2003. Coolest: 1975.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 8767909
NOAA station: MXN00003073 · GUSTAVO DIAZ ORDAZ
Station distance: 13.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 27.57°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from GUSTAVO DIAZ ORDAZ is what differs

Villa Alberto Andrés Alvarado Arámburo→San Francisco→Las Margaritas→Díaz Ordaz→Don Juanito→Francisco J. Mújica→

Or put two places side by side: Santo Tomás vs Villa Alberto Andrés Alvarado Arámburo

Best time to visitSanto Tomás.

January

May

December

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Santo Tomás.

The whole year,
without the guesswork.

Nearby, measured,
and named.