Mexico · 1991–2020

Best time to visit
El Rosario.

December leads for comfortable weather in El Rosario: typically 29.3°C by day, 14.5°C at night, with 8 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high29.3°C

Typical low14.5°C

Rain in December8 mm

Comfort

December

December · January · February

82climate match

Beach

November

November · December · October

85climate match

Outdoors

January

January · February · December

67climate match

The weakest month is August, scoring 16 against December’s 82 — 250 mm of rain falls, and days average 32.8°C, 9° 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

7929.1° / 12.9°

Feb

7630.1° / 12.8°

Mar

7231.5° / 13.1°

Apr

7033.1° / 14.8°

May

5734.9° / 18.8°

Jun

4335.1° / 24°

Jul

1933.5° / 24.1°

Aug

1632.8° / 23.8°

Sep

2532.1° / 23.9°

Oct

5432.4° / 22.5°

Nov

6931.5° / 18.3°

Dec

8229.3° / 14.5°

Monthly climate evidence for El Rosario — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 31 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	29.1°C	12.9°C	19 mm	1	23.6°C	10 h 52	79	Good coverage
February	30.1°C	12.8°C	18 mm	0.8	22.9°C	11 h 21	76	Good coverage
March	31.5°C	13.1°C	4 mm	0.1	22.5°C	11 h 57	72	Good coverage
April	33.1°C	14.8°C	1 mm	0.2	23.4°C	12 h 39	70	Good coverage
May	34.9°C	18.8°C	0 mm	0	25.8°C	13 h 14	57	Good coverage
June	35.1°C	24°C	60 mm	3.5	27.9°C	13 h 32	43	Good coverage
July	33.5°C	24.1°C	221 mm	10.8	29.4°C	13 h 25	19	Good coverage
August	32.8°C	23.8°C	250 mm	13.1	30.1°C	12 h 56	16	Good coverage
September	32.1°C	23.9°C	224 mm	9.5	29.9°C	12 h 15	25	Good coverage
October	32.4°C	22.5°C	67 mm	3	29.7°C	11 h 35	54	Good coverage
November	31.5°C	18.3°C	23 mm	1.4	27.6°C	11 h 00	69	Good coverage
December	29.3°C	14.5°C	8 mm	0.7	25.0°C	10 h 44	82	Good coverage

Records at ROSARIO, 1963–2013
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.7°C7 Jan 1981	5.6°C21 Jan 1988	85 mm12 Jan 1985	195 mm1992 · driest 0 mm in 1999	50
February	35.6°C28 Feb 2000	3.9°C5 Feb 2011	134 mm17 Feb 2010	226 mm2010 · driest 0 mm in 2011	49
March	39.4°C17 Mar 1978	6.1°C20 Mar 1968	60 mm16 Mar 2009	75 mm1968 · driest 0 mm in 2004	50
April	40.0°C15 Apr 1986	7.8°C7 Apr 1991	12 mm13 Apr 1997	18 mm1997 · driest 0 mm in 1972	49
May	40.0°C25 May 2012	10.6°C9 May 1982	55 mm27 May 1983	55 mm1983 · driest 0 mm in 2006	46
June	40.6°C15 Jun 1982	11.7°C10 Jun 1975	149 mm20 Jun 2012	347 mm2012 · driest 0 mm in 2006	49
July	40.6°C20 Jul 1987	17.2°C18 Jul 1983	202 mm17 Jul 1998	543 mm1998 · driest 0 mm in 2006	49
August	38.9°C22 Aug 1969	17.8°C16 Aug 1975	147 mm14 Aug 2012	608 mm2006 · driest 100 mm in 2001	48
September	38.9°C21 Sep 1982	17.2°C28 Sep 1989	253 mm25 Sep 1965	583 mm1970 · driest 94 mm in 2011	47
October	38.3°C26 Oct 1966	12.8°C30 Oct 1979	200 mm21 Oct 1986	360 mm1986 · driest 0 mm in 1989	49
November	38.9°C2 Nov 1978	7.8°C29 Nov 2011	268 mm23 Nov 1972	290 mm1972 · driest 0 mm in 1967	50
December	36.1°C22 Dec 1977	6.7°C31 Dec 2007	70 mm25 Dec 1974	103 mm1982 · driest 0 mm in 2011	50

Typical days per month at ROSARIO, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	29	17	<1
February	28	19	<1
March	31	26	<1
April	30	29	0
May	31	30	0
June	30	29	1
July	31	30	6
August	31	31	6
September	30	28	6
October	31	29	2
November	30	26	<1
December	30	17	<1

How often, not how much — every day in ROSARIO’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	95%	5%	2%	3%	27.6–30.4°C
February	97%	3%	1%	<1%	28.4–31.8°C
March	99%	<1%	<1%	<1%	29.9–32.8°C
April	100%	<1%	<1%	<1%	31.9–34.8°C
May	100%	<1%	<1%	<1%	33.7–35.9°C
June	89%	11%	4%	17%	33.5–36.6°C
July	61%	39%	19%	54%	32.5–35.3°C
August	58%	42%	21%	60%	31.9–34.2°C
September	66%	34%	18%	41%	31.7–33.8°C
October	91%	9%	5%	6%	31.7–34.3°C
November	96%	4%	2%	2%	30.9–33.2°C
December	95%	5%	2%	3%	28.0–31.2°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.

1964Each stripe is one year’s mean temperature against the 41-year average. Warmest: 1990. Coolest: 2010.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3988416
NOAA station: MXN00025078 · ROSARIO
Station distance: 0.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 22.99°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 31 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 ROSARIO is what differs

Escuinapa de Hidalgo→Isla del Bosque→Agua Verde→El Pozole→Apoderado→Chametla→

Or put two places side by side: El Rosario vs Escuinapa de Hidalgo

Best time to visitEl Rosario.