Mexico · 1991–2020

Best time to visit
Arenal de Álvarez (Arenal de Paco).

January leads for comfortable weather in Arenal de Álvarez (Arenal de Paco): typically 31.5°C by day, 20.1°C at night, with 11 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high31.5°C

Typical low20.1°C

Rain in January11 mm

Comfort

January

January · February · December

66climate match

Beach

December

December · January · February

92climate match

Outdoors

January

January · February · December

47climate match

The weakest month is September, scoring 12 against January’s 66 — 283 mm of rain falls, and days average 32.5°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

6631.5° / 20.1°

Feb

6532.1° / 19.8°

Mar

6233° / 19.7°

Apr

5833.7° / 20.3°

May

5234.3° / 22.8°

Jun

2133.9° / 24.1°

Jul

2433.9° / 23.9°

Aug

1633.6° / 23.9°

Sep

1232.5° / 23.5°

Oct

3832.5° / 23.3°

Nov

5932.3° / 22.3°

Dec

6431.7° / 20.8°

Monthly climate evidence for Arenal de Álvarez (Arenal de Paco) — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 18 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	31.5°C	20.1°C	11 mm	0.9	28.5°C	11 h 12	66	Good coverage
February	32.1°C	19.8°C	10 mm	0.2	27.7°C	11 h 34	65	Good coverage
March	33°C	19.7°C	1 mm	0.1	27.4°C	12 h	62	Good coverage
April	33.7°C	20.3°C	0 mm	0	27.3°C	12 h 30	58	Good coverage
May	34.3°C	22.8°C	23 mm	2.2	28.5°C	12 h 55	52	Good coverage
June	33.9°C	24.1°C	201 mm	10	29.6°C	13 h 09	21	Good coverage
July	33.9°C	23.9°C	184 mm	10.5	30.2°C	13 h 03	24	Good coverage
August	33.6°C	23.9°C	239 mm	12	30.3°C	12 h 42	16	Good coverage
September	32.5°C	23.5°C	283 mm	14	29.9°C	12 h 13	12	Good coverage
October	32.5°C	23.3°C	143 mm	6.8	29.5°C	11 h 43	38	Good coverage
November	32.3°C	22.3°C	22 mm	1.4	29.5°C	11 h 18	59	Good coverage
December	31.7°C	20.8°C	3 mm	0.3	29.0°C	11 h 07	64	Good coverage

Records at SAN JERONIMO, 1960–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.1°C4 Jan 1966	13.9°C13 Jan 1997	148 mm23 Jan 1980	251 mm1980 · driest 0 mm in 1993	51
February	36.1°C25 Feb 2002	15.0°C9 Feb 1971	88 mm3 Feb 2010	136 mm2010 · driest 0 mm in 1967	51
March	37.2°C9 Mar 1985	13.3°C7 Mar 2008	36 mm5 Mar 1968	36 mm1968 · driest 0 mm in 1977	52
April	37.2°C5 Apr 2002	15.0°C2 Apr 2001	44 mm6 Apr 1973	83 mm1973 · driest 0 mm in 1961	52
May	38.3°C25 May 2002	15.0°C6 May 1981	81 mm31 May 2004	140 mm2004 · driest 0 mm in 1981	52
June	38.9°C8 Jun 2011	18.9°C2 Jun 1988	208 mm22 Jun 1973	406 mm1993 · driest 26 mm in 2001	53
July	39.4°C24 Jul 1997	19.4°C13 Jul 1975	213 mm19 Jul 1990	466 mm1980 · driest 6 mm in 1976	52
August	39.4°C18 Aug 2001	20.0°C28 Aug 1981	229 mm30 Aug 2010	693 mm2010 · driest 22 mm in 1982	53
September	38.3°C1 Sep 2001	18.9°C26 Sep 1963	226 mm21 Sep 1974	763 mm1967 · driest 36 mm in 1990	53
October	37.2°C18 Oct 2001	20.0°C5 Oct 1997	163 mm9 Oct 1966	367 mm2006 · driest 1 mm in 1984	53
November	36.1°C7 Nov 1965	17.8°C20 Nov 1984	312 mm12 Nov 1961	411 mm1961 · driest 0 mm in 1999	52
December	37.2°C22 Dec 1987	15.0°C6 Dec 1999	27 mm30 Dec 1995	39 mm1995 · driest 0 mm in 1967	52

Typical days per month at SAN JERONIMO, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	31	28	<1
February	28	27	<1
March	31	31	0
April	30	30	0
May	31	31	<1
June	30	29	5
July	31	30	5
August	31	30	6
September	30	28	7
October	31	30	3
November	30	29	<1
December	31	28	<1

How often, not how much — every day in SAN JERONIMO’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%	2%	30.4–32.9°C
February	99%	<1%	<1%	0%	30.9–33.8°C
March	99%	<1%	<1%	<1%	31.3–34.1°C
April	99%	<1%	<1%	<1%	31.9–34.4°C
May	93%	7%	2%	7%	32.4–34.9°C
June	65%	35%	15%	47%	32.2–34.6°C
July	66%	34%	16%	41%	32.1–35.0°C
August	64%	36%	17%	45%	31.9–34.9°C
September	58%	42%	20%	56%	31.1–33.6°C
October	80%	20%	8%	16%	31.3–33.7°C
November	95%	5%	2%	3%	30.7–33.8°C
December	99%	1%	<1%	<1%	30.6–33.1°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.

1961Each stripe is one year’s mean temperature against the 48-year average. Warmest: 2002. Coolest: 1999.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4027573
NOAA station: MXN00012099 · SAN JERONIMO
Station distance: 6.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 17.13°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 18 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 JERONIMO is what differs

San Jerónimo de Juárez→Hacienda de Cabañas→Las Tunas→Arenal de Gómez (Primer Arenal)→Arenal del Centro (La Máquina)→Llano Real (El Dorado)→

Or put two places side by side: Arenal de Álvarez (Arenal de Paco) vs San Jerónimo de Juárez

Best time to visitArenal de Álvarez (Arenal de Paco).

January

December

January

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Arenal de Álvarez (Arenal de Paco).

The whole year,
without the guesswork.

Nearby, measured,
and named.