Chaves climate — normals and trends
Chaves (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.3 °C and it receives 2,605 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 October (27.9 °C on average) and the coldest is February (25.2 °C). Rainfall peaks in March.
Chaves averages 0 frost days, 191 hot days (≥ 30 °C) and 273 rainy days per year.
Chaves has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.5 °C (on 18 October 2011) and the coldest 20.8 °C (on 3 June 1977).
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
ChavesPará
- coords
- -0.16°, -49.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.3°C
Average daily high
30.1°C
Average daily low
23.7°C
Annual rainfall
2,605mm
Sunshine / day
9.8h
Mean relative humidity
84%
Average peak wind
14.0km/h
Seasonal range
2.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
191 d/yr
Rainy days (≥ 1 mm)
273 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.2 °C
Average feels-like low
27.9 °C
Average peak gust
32.5 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
17.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.68 · 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
35.5 °C
18 October 2011
Coldest day
20.8 °C
3 June 1977
Wettest day
200 mm
11 April 1943
Windiest day
26.5 km/h
15 November 1965
Strongest gust
57.2 km/h
25 September 1986
Hottest feels-like
41.8 °C
30 August 2022
Coldest feels-like
23.8 °C
23 January 1964
Sunniest day
11.9 h
22 November 2025
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 | 29.2 °C | +0.6 °C | 529 mm | +176 mm |
| Feb | 28.7 °C | +0.5 °C | 680 mm | +282 mm |
| Mar | 28.9 °C | +0.6 °C | 767 mm | +334 mm |
| Apr | 29.6 °C | +1.0 °C | 451 mm | +44 mm |
| May | 30.5 °C | +1.3 °C | 283 mm | -45 mm |
| Jun | 30.6 °C | +0.9 °C | 153 mm | -29 mm |
| Jul | 31.2 °C | +1.1 °C | 194 mm | +53 mm |
| Aug | 31.8 °C | +0.7 °C | 106 mm | +33 mm |
| Sep | 32.2 °C | +0.3 °C | 36 mm | -0 mm |
| Oct | 32.7 °C | +0.2 °C | 28 mm | +3 mm |
| Nov | 32.4 °C | +0.3 °C | 40 mm | -13 mm |
| Dec | 31.2 °C | +0.9 °C | 128 mm | -47 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 Chaves?
Chaves has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 2,605 mm of precipitation per year.
What is the hottest day ever recorded in Chaves?
The hottest day measured in Chaves between 1940 and 2025 was 18 October 2011, reaching 35.5 °C.
What is the coldest day in Chaves?
The coldest day measured in Chaves between 1940 and 2025 was 3 June 1977, at 20.8 °C.
Does it snow in Chaves?
Almost never: Chaves sees virtually no snow, with about 0 frost days per year.
Has the climate of Chaves warmed?
Yes: Chaves warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chaves?
The wettest day measured in Chaves between 1940 and 2025 was 11 April 1943, with 200 mm of rain in 24 hours.
What was the windiest day in Chaves?
The windiest day measured in Chaves between 1940 and 2025 was 15 November 1965, with winds reaching 26.5 km/h.
What is the warmest month in Chaves?
The warmest month in Chaves is October (27.9 °C on average); the coldest is February (25.2 °C).
How much does it rain in Chaves?
Chaves receives on average 2,605 mm of precipitation per year, spread over about 273 rainy days.
Is it sunny in Chaves?
Chaves gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Chaves?
Yes: Chaves has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chaves?
In Chaves, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 30 August 2022, and the lowest was 23.8 °C on 23 January 1964.
Compare Chaves with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chaves