Cuiabá, Brazil climate

Aw Tropical savanna (dry winter)

Cuiabá has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is October with an average daily high near 35°C, while the coldest is July averaging around 17°C at night. Precipitation totals about 1516 mm a year and is strongly seasonal — February alone averages 262 mm while July barely receives 10 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

Wet

About 1516 mm of rain a year.

Wettest in February

⛅ 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)

Cuiabá climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	33	33	33	32	32	32	35	36	35	34	33
Avg temp (°C)	—	27	27	27	25	24	24	26	28	28	28	28
Avg low (°C)	24	24	24	23	20	18	17	19	22	24	24	24
Precipitation (mm)	238	262	233	113	53	20	10	13	50	129	195	200

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	33	33	33	33	32	32
Avg temp (°C)	—	27	27	27	25	24
Avg low (°C)	24	24	24	23	20	18
Precipitation (mm)	238	262	233	113	53	20

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	35	36	35	34	33
Avg temp (°C)	24	26	28	28	28	28
Avg low (°C)	17	19	22	24	24	24
Precipitation (mm)	10	13	50	129	195	200

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	83	83	77	61	48	33	26	32	52	71	76	82
Relative humidity (%)	79	81	81	80	76	68	56	44	47	60	70	78
Wind speed (m/s)	1.7	1.6	1.4	1.4	1.6	1.8	2.0	2.2	2.2	1.9	1.8	1.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	83	83	77	61	48	33
Relative humidity (%)	79	81	81	80	76	68
Wind speed (m/s)	1.7	1.6	1.4	1.4	1.6	1.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	26	32	52	71	76	82
Relative humidity (%)	56	44	47	60	70	78
Wind speed (m/s)	2.0	2.2	2.2	1.9	1.8	1.8

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Cuiaba, about 6 km from the city centre.

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 →