Mexico · 1991–2020

Best time to visit
San Andrés.

December leads for comfortable weather in San Andrés: typically 24.6°C by day, 12.6°C at night, with 5 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high24.6°C

Typical low12.6°C

Rain in December5 mm

Comfort

December

December · November · January

94climate match

Beach

March

March · April · February

82climate match

Outdoors

December

December · January · November

81climate match

The weakest month is July, scoring 23 against December’s 94 — 340 mm of rain falls.

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

9225° / 12.4°

Feb

8727.6° / 14.1°

Mar

7730.4° / 16.1°

Apr

6632.5° / 18.5°

May

5432° / 19°

Jun

3430.1° / 19°

Jul

2328.7° / 18.2°

Aug

2728.7° / 18.3°

Sep

4127.3° / 17.6°

Oct

6427° / 16.3°

Nov

9325.9° / 14.5°

Dec

9424.6° / 12.6°

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	25°C	12.4°C	9 mm	0.8	11 h 07	92	Good coverage
February	27.6°C	14.1°C	14 mm	0.9	11 h 30	87	Good coverage
March	30.4°C	16.1°C	7 mm	0.4	11 h 59	77	Good coverage
April	32.5°C	18.5°C	14 mm	0.7	12 h 33	66	Good coverage
May	32°C	19°C	108 mm	5.9	13 h 00	54	Good coverage
June	30.1°C	19°C	239 mm	14.3	13 h 15	34	Good coverage
July	28.7°C	18.2°C	340 mm	17.7	13 h 09	23	Good coverage
August	28.7°C	18.3°C	302 mm	18.4	12 h 45	27	Good coverage
September	27.3°C	17.6°C	270 mm	14.5	12 h 13	41	Good coverage
October	27°C	16.3°C	177 mm	7.1	11 h 41	64	Good coverage
November	25.9°C	14.5°C	25 mm	1.6	11 h 14	93	Good coverage
December	24.6°C	12.6°C	5 mm	0.4	11 h 01	94	Good coverage

Records at TETIPAC, 1995–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	30.6°C24 Jan 2004	5.6°C17 Jan 2005	35 mm31 Jan 1995	37 mm2010 · driest 0 mm in 2011	17
February	32.8°C28 Feb 2012	6.7°C7 Feb 2010	49 mm5 Feb 2012	90 mm2012 · driest 0 mm in 2006	18
March	35.6°C31 Mar 2000	7.8°C2 Mar 2010	32 mm30 Mar 2003	32 mm2003 · driest 0 mm in 2002	18
April	37.8°C16 Apr 1998	11.7°C17 Apr 2010	49 mm18 Apr 2011	49 mm2011 · driest 0 mm in 1998	18
May	37.8°C18 May 1999	13.9°C4 May 2011	68 mm30 May 1995	268 mm2000 · driest 0 mm in 1999	18
June	38.9°C7 Jun 1997	13.9°C19 Jun 2010	96 mm22 Jun 1997	401 mm2002 · driest 0 mm in 1999	18
July	35.6°C16 Jul 2000	11.7°C30 Jul 2012	97 mm8 Jul 2010	924 mm2010 · driest 104 mm in 2003	18
August	36.7°C21 Aug 1998	11.7°C24 Aug 2005	135 mm30 Aug 2000	544 mm2010 · driest 99 mm in 2002	18
September	35.0°C24 Sep 1998	11.7°C9 Sep 2011	155 mm29 Sep 2000	625 mm2000 · driest 0 mm in 1999	17
October	32.8°C6 Oct 2001	7.8°C25 Oct 2011	160 mm2 Oct 1999	850 mm1999 · driest 0 mm in 1996	17
November	30.6°C17 Nov 2003	5.0°C6 Nov 2010	54 mm3 Nov 2002	122 mm2002 · driest 0 mm in 2001	18
December	28.9°C27 Dec 2003	5.6°C21 Dec 2003	25 mm19 Dec 2001	34 mm2001 · driest 0 mm in 1996	16

Typical days per month at TETIPAC, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	22	<1	<1
February	26	8	<1
March	31	22	<1
April	30	27	<1
May	31	27	3
June	29	18	8
July	29	12	10
August	30	11	10
September	28	7	9
October	29	6	4
November	24	1	<1
December	20	0	<1

How often, not how much — every day in TETIPAC’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	97%	3%	<1%	1%	23.8–26.4°C
February	97%	3%	1%	2%	26.2–29.2°C
March	99%	1%	<1%	0%	28.4–31.9°C
April	98%	2%	2%	<1%	30.3–34.7°C
May	81%	19%	11%	25%	29.9–34.3°C
June	52%	48%	26%	72%	27.6–33.0°C
July	43%	57%	34%	83%	25.7–33.2°C
August	41%	59%	33%	87%	25.9–32.9°C
September	52%	48%	31%	67%	25.4–30.2°C
October	77%	23%	13%	25%	25.3–29.4°C
November	94%	5%	2%	3%	24.4–27.4°C
December	98%	1%	<1%	0%	23.8–25.8°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3821488
NOAA station: MXN00012128 · TETIPAC
Station distance: 2.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 18.65°, 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 TETIPAC is what differs

Tetipac→Ahualulco→Tenexcontitlán (El Ranchito)→San Antonio→Santiago→Malhuantla→

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

Best time to visitSan Andrés.

December

March

December

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
San Andrés.

The whole year,
without the guesswork.

Nearby, measured,
and named.