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Mexico · 1991–2020

Best time to visit
San Andrés.

November leads for comfortable weather in San Andrés: typically 24°C by day, 9.2°C at night, with 23 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortNovember

Typical high24°C

Typical low9.2°C

Rain in November23 mm

Comfort

November

November · February · October

89climate match

Beach

October

October · April · May

78climate match

Outdoors

January

January · December · November

89climate match

The weakest month is June, scoring 45 against November’s 89 — days average 35.7°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

7321° / 5.4°

Feb

8323.3° / 7.1°

Mar

8227.2° / 10.9°

Apr

7731.1° / 15°

May

5833.8° / 18.9°

Jun

4535.7° / 21.7°

Jul

4635.4° / 21.9°

Aug

4735.4° / 21.8°

Sep

5431.7° / 19°

Oct

8328.5° / 14.6°

Nov

8924° / 9.2°

Dec

7321.1° / 5.5°

Monthly climate evidence for San Andrés — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	21°C	5.4°C	20 mm	2.9	10 h 38	73	Good coverage
February	23.3°C	7.1°C	18 mm	2.3	11 h 13	83	Good coverage
March	27.2°C	10.9°C	18 mm	2.4	11 h 56	82	Good coverage
April	31.1°C	15°C	20 mm	2.3	12 h 45	77	Good coverage
May	33.8°C	18.9°C	48 mm	3.8	13 h 26	58	Good coverage
June	35.7°C	21.7°C	59 mm	3.7	13 h 48	45	Good coverage
July	35.4°C	21.9°C	62 mm	3.8	13 h 39	46	Good coverage
August	35.4°C	21.8°C	51 mm	4.2	13 h 04	47	Good coverage
September	31.7°C	19°C	112 mm	6.1	12 h 17	54	Good coverage
October	28.5°C	14.6°C	45 mm	3.5	11 h 29	83	Good coverage
November	24°C	9.2°C	23 mm	2.7	10 h 48	89	Good coverage
December	21.1°C	5.5°C	23 mm	3	10 h 29	73	Good coverage

Records at SIERRA MORENA, 1983–2011
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.7°C28 Jan 1987	-7.2°C9 Jan 2010	62 mm21 Jan 1994	173 mm1984 · driest 0 mm in 1999	27
February	40.0°C27 Feb 2011	-9.4°C4 Feb 2011	110 mm16 Feb 1989	331 mm1989 · driest 0 mm in 2011	27
March	40.6°C6 Mar 1991	-3.3°C4 Mar 2002	45 mm29 Mar 2004	93 mm2004 · driest 0 mm in 2000	26
April	42.8°C15 Apr 1998	2.8°C3 Apr 1987	35 mm7 Apr 1985	123 mm1985 · driest 0 mm in 2005	26
May	44.4°C7 May 1998	5.6°C3 May 2004	75 mm11 May 2009	152 mm1984 · driest 0 mm in 1998	28
June	45.0°C30 Jun 1992	12.8°C1 Jun 1984	110 mm30 Jun 2010	176 mm2010 · driest 0 mm in 2005	26
July	41.7°C30 Jul 2009	15.6°C25 Jul 1987	260 mm1 Jul 2010	427 mm2010 · driest 1 mm in 2009	27
August	41.7°C11 Aug 2011	17.8°C24 Aug 1996	82 mm22 Aug 1996	220 mm1996 · driest 0 mm in 2009	26
September	41.7°C26 Sep 2011	6.7°C23 Sep 1995	147 mm17 Sep 1988	340 mm1988 · driest 0 mm in 2005	26
October	37.8°C21 Oct 2011	0.0°C31 Oct 1993	68 mm6 Oct 2000	139 mm2000 · driest 0 mm in 2010	26
November	37.8°C30 Nov 1986	-2.2°C28 Nov 1992	37 mm30 Nov 2009	43 mm1992 · driest 0 mm in 2008	25
December	35.0°C8 Dec 2009	-7.2°C19 Dec 1996	40 mm7 Dec 2006	103 mm2006 · driest 0 mm in 1990	23

Typical days per month at SIERRA MORENA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	10	3	3	<1
February	13	5	2	<1
March	22	12	<1	<1
April	26	20	0	<1
May	28	26	0	2
June	30	29	0	2
July	31	30	0	2
August	30	29	0	2
September	28	22	0	3
October	25	14	<1	1
November	15	4	<1	<1
December	8	2	3	<1

How often, not how much — every day in SIERRA MORENA’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	59%	11%	2%	8%	17.0–24.1°C
February	69%	9%	3%	5%	20.0–26.1°C
March	86%	7%	1%	6%	25.5–29.9°C
April	89%	9%	3%	7%	27.8–33.1°C
May	87%	13%	5%	7%	30.9–35.8°C
June	88%	13%	6%	12%	33.4–37.3°C
July	87%	13%	6%	8%	33.4–37.2°C
August	86%	14%	5%	14%	33.3–37.0°C
September	80%	21%	10%	21%	29.4–33.9°C
October	87%	12%	4%	10%	27.2–29.6°C
November	80%	9%	3%	5%	21.6–26.8°C
December	59%	9%	2%	7%	18.8–23.4°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.

1987Each stripe is one year’s mean temperature against the 20-year average. Warmest: 2011. Coolest: 1987.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 8942588
NOAA station: MXN00019178 · SIERRA MORENA
Station distance: 3.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 26.54°, 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 SIERRA MORENA is what differs

Bustamante→La Lagunilla→San Isidro→La Guadalupana (San Juanita) [Fábrica de Mezcal]→Santo Tomás→Guanajuato→

Or put two places side by side: San Andrés vs Bustamante

Best time to visitSan Andrés.