Cuiabá climate — normals and trends
Cuiabá (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.8 °C and it receives 1,477 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is September (27.5 °C on average) and the coldest is June (23.5 °C). Rainfall peaks in January.
Cuiabá averages 0 frost days, 247 hot days (≥ 30 °C) and 176 rainy days per year.
Cuiabá has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.8 °C (on 31 October 1963) and the coldest 5.9 °C (on 21 August 1965).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
CuiabáMato Grosso
- coords
- -15.60°, -56.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.8°C
Average daily high
31.1°C
Average daily low
21.6°C
Annual rainfall
1,477mm
Sunshine / day
10.3h
Mean relative humidity
73%
Average peak wind
11.5km/h
Seasonal range
4.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
247 d/yr
Rainy days (≥ 1 mm)
176 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.4 °C
Average feels-like low
24.0 °C
Average peak gust
27.8 km/h
Tropical nights (≥ 20 °C)
281 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
42.8 °C
31 October 1963
Coldest day
5.9 °C
21 August 1965
Wettest day
229 mm
13 January 1965
Windiest day
33.4 km/h
28 September 1961
Strongest gust
72.4 km/h
12 January 1965
Hottest feels-like
46.4 °C
20 October 1999
Coldest feels-like
2.3 °C
21 August 1965
Sunniest day
12.9 h
3 December 1942
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 30.5 °C | 0.0 °C | 220 mm | -33 mm |
| Feb | 31.0 °C | +0.6 °C | 104 mm | -124 mm |
| Mar | 31.7 °C | +1.2 °C | 100 mm | -107 mm |
| Apr | 30.6 °C | +0.2 °C | 126 mm | +12 mm |
| May | 31.0 °C | +1.4 °C | 31 mm | -15 mm |
| Jun | 30.0 °C | +0.2 °C | 17 mm | +7 mm |
| Jul | 30.6 °C | 0.0 °C | 0 mm | -8 mm |
| Aug | 32.7 °C | -0.2 °C | 2 mm | -10 mm |
| Sep | 36.4 °C | +2.6 °C | 8 mm | -40 mm |
| Oct | 34.0 °C | +1.2 °C | 33 mm | -101 mm |
| Nov | 33.7 °C | +2.3 °C | 52 mm | -135 mm |
| Dec | 30.6 °C | 0.0 °C | 202 mm | -27 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Cuiabá?
Cuiabá has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.8 °C and it receives 1,477 mm of precipitation per year.
What is the hottest day ever recorded in Cuiabá?
The hottest day measured in Cuiabá between 1940 and 2025 was 31 October 1963, reaching 42.8 °C.
What is the coldest day in Cuiabá?
The coldest day measured in Cuiabá between 1940 and 2025 was 21 August 1965, at 5.9 °C.
Does it snow in Cuiabá?
Almost never: Cuiabá sees virtually no snow, with about 0 frost days per year.
Has the climate of Cuiabá warmed?
Yes: Cuiabá warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cuiabá?
The wettest day measured in Cuiabá between 1940 and 2025 was 13 January 1965, with 229 mm of rain in 24 hours.
What was the windiest day in Cuiabá?
The windiest day measured in Cuiabá between 1940 and 2025 was 28 September 1961, with winds reaching 33.4 km/h.
What is the warmest month in Cuiabá?
The warmest month in Cuiabá is September (27.5 °C on average); the coldest is June (23.5 °C).
How much does it rain in Cuiabá?
Cuiabá receives on average 1,477 mm of precipitation per year, spread over about 176 rainy days.
Is it sunny in Cuiabá?
Cuiabá gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Cuiabá?
Yes: Cuiabá has on average 281 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cuiabá?
In Cuiabá, between 1940 and 2025, the highest apparent temperature reached 46.4 °C on 20 October 1999, and the lowest was 2.3 °C on 21 August 1965.
Compare Cuiabá with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cuiabá