Mexico · 1991–2020

Best time to visit
Monte Alto.

December leads for comfortable weather in Monte Alto: typically 33.5°C by day, 17°C at night, with 8 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high33.5°C

Typical low17°C

Rain in December8 mm

Comfort

December

December · January · February

65climate match

Beach

November

November · December · May

79climate match

Outdoors

December

December · January · February

46climate match

The weakest month is September, scoring 9 against December’s 65 — 335 mm of rain falls, and days average 32.7°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

6434.3° / 16.1°

Feb

6234.8° / 16.4°

Mar

5835.7° / 17.1°

Apr

5436.2° / 18°

May

5136.5° / 19.6°

Jun

1934.5° / 20.4°

Jul

2334.2° / 19.7°

Aug

1333.5° / 20.1°

Sep

932.7° / 19.9°

Oct

3532.7° / 19.4°

Nov

6133.9° / 18.6°

Dec

6533.5° / 17°

Monthly climate evidence for Monte Alto — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 14 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	34.3°C	16.1°C	14 mm	0.7	28.5°C	11 h 14	64	Good coverage
February	34.8°C	16.4°C	5 mm	0.4	28.1°C	11 h 34	62	Good coverage
March	35.7°C	17.1°C	2 mm	0.1	27.8°C	12 h	58	Good coverage
April	36.2°C	18°C	1 mm	0.1	27.9°C	12 h 30	54	Good coverage
May	36.5°C	19.6°C	27 mm	2.2	28.9°C	12 h 54	51	Good coverage
June	34.5°C	20.4°C	243 mm	11.1	29.8°C	13 h 07	19	Good coverage
July	34.2°C	19.7°C	220 mm	13	30.3°C	13 h 02	23	Good coverage
August	33.5°C	20.1°C	293 mm	14.9	30.4°C	12 h 41	13	Good coverage
September	32.7°C	19.9°C	335 mm	15.7	29.9°C	12 h 13	9	Good coverage
October	32.7°C	19.4°C	203 mm	8.9	29.7°C	11 h 44	35	Good coverage
November	33.9°C	18.6°C	35 mm	1.9	29.7°C	11 h 20	61	Good coverage
December	33.5°C	17°C	8 mm	0.6	29.0°C	11 h 08	65	Good coverage

Records at CHACALAPA, 1979–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	38.9°C8 Jan 2006	10.0°C5 Jan 1999	119 mm15 Jan 2010	148 mm2010 · driest 0 mm in 2006	33
February	40.0°C26 Feb 2002	10.0°C14 Feb 1992	45 mm25 Feb 1983	80 mm2010 · driest 0 mm in 1980	33
March	38.9°C29 Mar 1995	10.6°C1 Mar 1983	45 mm13 Mar 1983	66 mm1983 · driest 0 mm in 1996	33
April	40.0°C18 Apr 1999	13.3°C28 Apr 1997	20 mm5 Apr 2007	20 mm2007 · driest 0 mm in 1995	33
May	40.6°C14 May 1998	10.0°C24 May 1979	61 mm31 May 2000	164 mm2000 · driest 0 mm in 2003	33
June	40.0°C6 Jun 1993	13.9°C4 Jun 1979	167 mm22 Jun 1991	477 mm1999 · driest 58 mm in 2010	32
July	39.4°C25 Jul 1997	16.1°C1 Jul 1980	149 mm20 Jul 1979	522 mm2011 · driest 20 mm in 2012	32
August	38.3°C15 Aug 1997	16.1°C10 Aug 2011	142 mm23 Aug 1990	659 mm2010 · driest 89 mm in 2002	31
September	37.2°C11 Sep 2000	16.7°C21 Sep 2009	151 mm13 Sep 1984	740 mm1984 · driest 118 mm in 2007	30
October	36.7°C3 Oct 2007	15.0°C27 Oct 1999	200 mm8 Oct 1997	502 mm2011 · driest 0 mm in 2010	31
November	36.7°C5 Nov 1995	10.0°C24 Nov 2002	180 mm3 Nov 2002	285 mm2002 · driest 0 mm in 1984	31
December	37.8°C12 Dec 1995	11.1°C5 Dec 1999	36 mm24 Dec 2002	40 mm1995 · driest 0 mm in 2004	31

Typical days per month at CHACALAPA, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	30	30	<1
February	28	28	<1
March	31	31	<1
April	30	30	<1
May	31	31	<1
June	30	29	6
July	30	30	6
August	30	29	9
September	30	29	11
October	30	29	5
November	29	28	<1
December	31	29	<1

How often, not how much — every day in CHACALAPA’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%	32.0–35.8°C
February	99%	1%	<1%	<1%	32.7–35.8°C
March	100%	<1%	<1%	0%	33.7–36.5°C
April	100%	<1%	<1%	0%	34.6–36.9°C
May	93%	7%	3%	9%	34.5–37.0°C
June	62%	38%	20%	53%	32.1–35.9°C
July	58%	44%	21%	57%	31.5–35.6°C
August	50%	50%	27%	69%	31.0–35.2°C
September	45%	54%	31%	76%	30.5–34.0°C
October	72%	28%	15%	28%	31.1–34.5°C
November	95%	5%	2%	2%	31.9–35.2°C
December	98%	2%	<1%	<1%	31.9–35.0°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3523045
NOAA station: MXN00012029 · CHACALAPA
Station distance: 4.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 16.72°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 14 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 CHACALAPA is what differs

Lomas de Chapultepec→San Andrés Playa Encantada (El Podrido)→Llano de la Puerta→Barra Vieja→Bella Vista Papagayo→San José Guatemala→

Or put two places side by side: Monte Alto vs Lomas de Chapultepec

Best time to visitMonte Alto.

December

November

December

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Monte Alto.

The whole year,
without the guesswork.

Nearby, measured,
and named.