San Cristóbal de las Casas climate

Name: San Cristóbal de las Casas
Address: MX

San Cristóbal de las Casas is warmest in April, with average highs of 24 °C, and coldest in January, when nights average 10.0 °C. June is the wettest month (480 mm) and February the driest (9.3 mm). Figures are 1991–2020 climate normals.

Across a full year San Cristóbal de las Casas averages 2,224 mm of rain and 18 days above 25 °C.

Mexico · population 215,874 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month April 24 °C
Coldest month January 10.0 °C
Driest month February 9 mm
Wettest month June 480 mm
Least cloud February 31 % cloud
Hottest on record May 30 °C
Coldest on record February 3.4 °C

What to expectSan Cristóbal de las Casas through the year

San Cristóbal de las Casas has a clear annual cycle: average daily highs run from 20 °C in January to 24 °C in April, a swing of 3.2 °C in mean temperature across the year.

Counted across a normal year, 18 days a year reach 25 °C, 0 of them reach 30 °C. The warmest reading in the 1991–2020 record is 30 °C, in May.

Rain is strongly seasonal. June averages 480 mm against 9 mm in February — 52 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	19.8 °C	13 mm	36 %
February	21.5 °C	9 mm	31 %
March	23.0 °C	21 mm	33 %
April	23.6 °C	53 mm	40 %
May	22.4 °C	222 mm	62 %
June	21.0 °C	480 mm	82 %
July	21.2 °C	304 mm	75 %
August	21.2 °C	375 mm	76 %
September	20.5 °C	428 mm	84 %
October	20.1 °C	231 mm	72 %
November	19.7 °C	68 mm	51 %
December	19.8 °C	19 mm	38 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C
January	19.8 °C	10.0 °C	14.2 °C	25.1 °C	3.7 °C	0
February	21.5 °C	10.4 °C	15.2 °C	27.1 °C	3.4 °C	1
March	23.0 °C	11.2 °C	16.4 °C	28.1 °C	5.0 °C	6
April	23.6 °C	12.4 °C	17.4 °C	29.8 °C	7.0 °C	8
May	22.4 °C	13.2 °C	17.1 °C	30.3 °C	9.7 °C	3
June	21.0 °C	13.5 °C	16.5 °C	27.5 °C	9.8 °C	0
July	21.2 °C	13.0 °C	16.4 °C	24.3 °C	9.7 °C	0
August	21.2 °C	13.2 °C	16.4 °C	25.5 °C	9.6 °C	0
September	20.5 °C	13.4 °C	16.1 °C	25.2 °C	10.1 °C	0
October	20.1 °C	12.8 °C	15.7 °C	24.0 °C	8.1 °C	0
November	19.7 °C	11.4 °C	14.8 °C	23.9 °C	5.5 °C	0
December	19.8 °C	10.5 °C	14.4 °C	24.9 °C	3.6 °C	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	13 mm	3	11 h/day	36 %	71 %	9.4 km/h
February	9 mm	2	12 h/day	31 %	66 %	9.8 km/h
March	21 mm	4	12 h/day	33 %	63 %	10 km/h
April	53 mm	10	13 h/day	40 %	66 %	9.4 km/h
May	222 mm	20	13 h/day	62 %	77 %	7.5 km/h
June	480 mm	26	13 h/day	82 %	86 %	6.5 km/h
July	304 mm	22	13 h/day	75 %	81 %	6.8 km/h
August	375 mm	24	13 h/day	76 %	83 %	6.7 km/h
September	428 mm	26	12 h/day	84 %	87 %	6.5 km/h
October	231 mm	19	12 h/day	72 %	85 %	7.4 km/h
November	68 mm	9	11 h/day	51 %	80 %	8.5 km/h
December	19 mm	3	11 h/day	38 %	74 %	8.6 km/h

How San Cristóbal de las Casas compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
San Cristóbal de las Casas	24 °C	10.0 °C	2,224 mm	18
Tuxtla · Mexico	34 °C	17 °C	1,653 mm	340
Comitán · Mexico	27 °C	12 °C	1,463 mm	115
Villahermosa · Mexico	35 °C	20 °C	1,640 mm	343
Tapachula · Mexico	32 °C	19 °C	3,719 mm	361
Ciudad del Carmen · Mexico	33 °C	21 °C	1,289 mm	346
Quetzaltenango · Guatemala	20 °C	11 °C	2,999 mm	0

Where San Cristóbal de las Casas ranks

Ranking	Position	Value
Places with the best weather in North America in March	1st of 50	97/100
Places with the best weather in the world in March	1st of 50	97/100
Places with the best weather in North America in February	5th of 50	96/100
The coolest places in North America in August	11th of 50	21 °C
The coolest places in North America in July	14th of 50	21 °C
The coolest places in North America in June	18th of 50	21 °C

Planning a trip? See the best time to visit San Cristóbal de las Casas.

QuestionsCommon questions about San Cristóbal de las Casas’s climate

When is the best time to visit San Cristóbal de las Casas?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, June sit closest to 20 °C on average, April is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does San Cristóbal de las Casas get?

In April, the warmest month, daily highs average 24 °C. About 0 days a year pass 30 °C. The highest value in the 1991–2020 record is 30 °C.

How cold does it get in winter?

Nights average 10.0 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in San Cristóbal de las Casas?

June, averaging 480 mm over 26 days with rain. The driest month is February with 9 mm. The year as a whole averages 2,224 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in San Cristóbal de las Casas rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 16.730°, -92.638° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.