Mexico · 1991–2020

Best time to visit
San Germán.

January leads for comfortable weather in San Germán: typically 25.3°C by day, 11.4°C at night, with 18 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high25.3°C

Typical low11.4°C

Rain in January18 mm

Comfort

January

January · December · February

89climate match

Beach

November

November · February · March

78climate match

Outdoors

January

January · December · February

81climate match

The weakest month is June, scoring 39 against January’s 89 — days average 37.7°C, 14° 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

8925.3° / 11.4°

Feb

8128.5° / 12.7°

Mar

7431.9° / 15.2°

Apr

6034.4° / 17.1°

May

5035.8° / 19.5°

Jun

3937.7° / 21.2°

Jul

4037.7° / 20.8°

Aug

3937.8° / 21°

Sep

4035.2° / 19.9°

Oct

5833° / 17.6°

Nov

7929.7° / 13.8°

Dec

8426.7° / 11°

Monthly climate evidence for San Germán — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 32 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	25.3°C	11.4°C	18 mm	1.8	19.1°C	10 h 43	89	Good coverage
February	28.5°C	12.7°C	17 mm	1.9	18.9°C	11 h 16	81	Good coverage
March	31.9°C	15.2°C	33 mm	2.4	20.2°C	11 h 56	74	Good coverage
April	34.4°C	17.1°C	46 mm	2.1	22.9°C	12 h 43	60	Good coverage
May	35.8°C	19.5°C	53 mm	2.8	25.7°C	13 h 21	50	Good coverage
June	37.7°C	21.2°C	64 mm	3.3	27.8°C	13 h 42	39	Good coverage
July	37.7°C	20.8°C	66 mm	2.8	28.2°C	13 h 34	40	Good coverage
August	37.8°C	21°C	66 mm	3.5	28.6°C	13 h 01	39	Good coverage
September	35.2°C	19.9°C	115 mm	6.4	29.0°C	12 h 16	40	Good coverage
October	33°C	17.6°C	85 mm	3.9	27.3°C	11 h 31	58	Good coverage
November	29.7°C	13.8°C	29 mm	2.3	24.1°C	10 h 53	79	Good coverage
December	26.7°C	11°C	20 mm	2.1	21.2°C	10 h 34	84	Good coverage

Records at SAN FRANCISCO, 1979–2009
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	40.6°C29 Jan 2008	-1.1°C12 Jan 1982	60 mm30 Jan 1984	200 mm1984 · driest 0 mm in 1997	29
February	45.0°C25 Feb 2008	-1.1°C1 Feb 1985	54 mm25 Feb 1983	93 mm1983 · driest 0 mm in 1997	31
March	50.0°C15 Mar 2008	0.6°C5 Mar 2008	75 mm10 Mar 1997	175 mm1997 · driest 0 mm in 1989	30
April	50.0°C10 Apr 2008	0.6°C19 Apr 2008	75 mm6 Apr 1991	242 mm1997 · driest 0 mm in 1984	31
May	46.7°C3 May 2008	5.6°C17 May 1984	92 mm25 May 2007	167 mm2007 · driest 0 mm in 1994	29
June	45.6°C15 Jun 2007	8.9°C14 Jun 1986	362 mm29 Jun 1991	453 mm1991 · driest 0 mm in 1996	30
July	48.9°C31 Jul 2009	11.7°C13 Jul 1985	200 mm19 Jul 2005	260 mm2008 · driest 0 mm in 2000	30
August	48.9°C27 Aug 2009	10.0°C3 Aug 1990	88 mm16 Aug 1988	266 mm1995 · driest 0 mm in 1997	31
September	45.6°C3 Sep 2008	6.7°C17 Sep 2008	106 mm1 Sep 1990	271 mm1990 · driest 0 mm in 2003	27
October	43.9°C8 Oct 2007	0.6°C29 Oct 2008	95 mm31 Oct 2002	360 mm2002 · driest 0 mm in 2001	28
November	40.6°C11 Nov 2008	0.6°C22 Nov 2008	70 mm16 Nov 2001	87 mm1980 · driest 0 mm in 1983	27
December	42.8°C9 Dec 2008	-3.3°C25 Dec 1983	73 mm2 Dec 1979	99 mm1979 · driest 0 mm in 2002	30

Typical days per month at SAN FRANCISCO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	16	9	<1	<1
February	21	12	0	<1
March	28	21	0	1
April	29	25	0	1
May	31	29	0	2
June	30	29	0	2
July	31	30	0	2
August	31	30	0	2
September	30	27	0	3
October	29	25	0	2
November	24	16	0	<1
December	19	11	<1	<1

How often, not how much — every day in SAN FRANCISCO’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	74%	9%	4%	6%	19.0–29.9°C
February	85%	8%	2%	3%	22.5–33.4°C
March	92%	7%	3%	3%	26.7–35.0°C
April	92%	8%	4%	5%	28.1–37.0°C
May	90%	10%	5%	7%	30.9–38.8°C
June	89%	12%	6%	13%	32.4–39.6°C
July	92%	9%	5%	6%	32.8–39.5°C
August	90%	10%	6%	13%	33.3–38.4°C
September	79%	21%	11%	20%	31.2–37.8°C
October	89%	10%	6%	7%	28.8–36.6°C
November	89%	7%	2%	4%	25.7–35.2°C
December	80%	8%	3%	6%	21.0–30.0°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.

1979Each stripe is one year’s mean temperature against the 20-year average. Warmest: 1995. Coolest: 1983.2008

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3519225
NOAA station: MXN00028204 · SAN FRANCISCO
Station distance: 47.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 25.22°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 32 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 SAN FRANCISCO is what differs

Alfredo V. Bonfil→Guadalupe Victoria (El Norteño)→La Lomita→Emiliano Zapata (Ampliación San Germán)→La Carreta Dos→Águila Azteca→

Or put two places side by side: San Germán vs Alfredo V. Bonfil

Best time to visitSan Germán.

January

November

January

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
San Germán.

The whole year,
without the guesswork.

Nearby, measured,
and named.