Alto Araguaia climate — normals and trends
Alto Araguaia (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 23.1 °C and it receives 1,448 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 (24.9 °C on average) and the coldest is June (20.9 °C). Rainfall peaks in January.
Alto Araguaia averages 0 frost days, 108 hot days (≥ 30 °C) and 174 rainy days per year.
Alto Araguaia has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.9 °C (on 16 October 1963) and the coldest 2.2 °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
Alto AraguaiaMato Grosso
- coords
- -17.31°, -53.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.1°C
Average daily high
28.7°C
Average daily low
18.5°C
Annual rainfall
1,448mm
Sunshine / day
10.1h
Mean relative humidity
71%
Average peak wind
12.4km/h
Seasonal range
4.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
108 d/yr
Rainy days (≥ 1 mm)
174 d/yr
Annual snowfall
0.0 cm
Average feels-like high
31.4 °C
Average feels-like low
19.6 °C
Average peak gust
29.5 km/h
Tropical nights (≥ 20 °C)
121 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
39.9 °C
16 October 1963
Coldest day
2.2 °C
21 August 1965
Wettest day
122 mm
10 February 1964
Windiest day
34.1 km/h
15 September 1956
Strongest gust
74.2 km/h
28 January 1965
Hottest feels-like
40.9 °C
18 October 1963
Coldest feels-like
-2.2 °C
18 July 1975
Sunniest day
13.0 h
12 December 1941
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 28.8 °C | +0.9 °C | 274 mm | +17 mm |
| Feb | 29.1 °C | +1.0 °C | 141 mm | -82 mm |
| Mar | 29.9 °C | +1.6 °C | 74 mm | -116 mm |
| Apr | 28.9 °C | +0.6 °C | 81 mm | -5 mm |
| May | 28.4 °C | +0.9 °C | 10 mm | -27 mm |
| Jun | 28.3 °C | +0.8 °C | 6 mm | -5 mm |
| Jul | 28.6 °C | +0.5 °C | 0 mm | -10 mm |
| Aug | 31.2 °C | +0.7 °C | 1 mm | -10 mm |
| Sep | 34.4 °C | +2.8 °C | 15 mm | -35 mm |
| Oct | 32.8 °C | +2.5 °C | 59 mm | -73 mm |
| Nov | 31.4 °C | +2.6 °C | 76 mm | -119 mm |
| Dec | 28.3 °C | +0.3 °C | 210 mm | -37 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 Alto Araguaia?
Alto Araguaia has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.1 °C and it receives 1,448 mm of precipitation per year.
What is the hottest day ever recorded in Alto Araguaia?
The hottest day measured in Alto Araguaia between 1940 and 2025 was 16 October 1963, reaching 39.9 °C.
What is the coldest day in Alto Araguaia?
The coldest day measured in Alto Araguaia between 1940 and 2025 was 21 August 1965, at 2.2 °C.
Does it snow in Alto Araguaia?
Almost never: Alto Araguaia sees virtually no snow, with about 0 frost days per year.
Has the climate of Alto Araguaia warmed?
Yes: Alto Araguaia warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alto Araguaia?
The wettest day measured in Alto Araguaia between 1940 and 2025 was 10 February 1964, with 122 mm of rain in 24 hours.
What was the windiest day in Alto Araguaia?
The windiest day measured in Alto Araguaia between 1940 and 2025 was 15 September 1956, with winds reaching 34.1 km/h.
What is the warmest month in Alto Araguaia?
The warmest month in Alto Araguaia is September (24.9 °C on average); the coldest is June (20.9 °C).
How much does it rain in Alto Araguaia?
Alto Araguaia receives on average 1,448 mm of precipitation per year, spread over about 174 rainy days.
Is it sunny in Alto Araguaia?
Alto Araguaia gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Alto Araguaia?
Yes: Alto Araguaia has on average 121 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alto Araguaia?
In Alto Araguaia, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 18 October 1963, and the lowest was -2.2 °C on 18 July 1975.
Compare Alto Araguaia with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alto Araguaia