Tuxtla, Chiapas climate

Aw Tropical savanna (dry winter)

Tuxtla has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is May with an average daily high near 35°C, while the coldest is January averaging around 17°C at night. Precipitation totals about 1001 mm a year and is strongly seasonal — August alone averages 217 mm while January barely receives 1 mm.

☀️ All year

Very hot

Daytime highs near 35°C most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 17°C.

🌧️ Rain

Moderate rainfall

About 1001 mm of rain a year.

Wettest in August

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Tuxtla climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	32	34	36	35	33	32	32	32	31	30	30
Avg temp (°C)	23	25	27	29	29	27	27	27	27	26	24	24
Avg low (°C)	17	18	19	21	22	22	21	21	21	21	19	18
Precipitation (mm)	1	2	3	10	88	211	164	217	209	77	17	3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	30	32	34	36	35	33
Avg temp (°C)	23	25	27	29	29	27
Avg low (°C)	17	18	19	21	22	22
Precipitation (mm)	1	2	3	10	88	211

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	32	32	31	30	30
Avg temp (°C)	27	27	27	26	24	24
Avg low (°C)	21	21	21	21	19	18
Precipitation (mm)	164	217	209	77	17	3

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	45	40	36	40	60	77	72	73	80	67	50	44
Relative humidity (%)	85	81	76	71	74	83	84	86	89	90	89	87
Wind speed (m/s)	1.9	1.8	1.8	1.7	1.5	1.2	1.2	1.2	1.2	1.6	1.9	1.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	45	40	36	40	60	77
Relative humidity (%)	85	81	76	71	74	83
Wind speed (m/s)	1.9	1.8	1.8	1.7	1.5	1.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	72	73	80	67	50	44
Relative humidity (%)	84	86	89	90	89	87
Wind speed (m/s)	1.2	1.2	1.2	1.6	1.9	1.7

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Tuxtla Gutierrez (dge), inside the city.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →