Alto Alegre climate — normals and trends
Alto Alegre (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 2,152 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 March (27.6 °C on average) and the coldest is June (24.6 °C). Rainfall peaks in May.
Alto Alegre averages 0 frost days, 220 hot days (≥ 30 °C) and 226 rainy days per year.
Alto Alegre has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.6 °C (on 31 March 1964) and the coldest 18.2 °C (on 22 July 1975).
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 AlegreRoraima
- coords
- 2.90°, -61.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
30.6°C
Average daily low
22.8°C
Annual rainfall
2,152mm
Sunshine / day
10.1h
Mean relative humidity
81%
Average peak wind
9.3km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
220 d/yr
Rainy days (≥ 1 mm)
226 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.6 °C
Average feels-like low
26.6 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.53 · 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
38.6 °C
31 March 1964
Coldest day
18.2 °C
22 July 1975
Wettest day
176 mm
15 April 2006
Windiest day
21.5 km/h
23 February 1965
Strongest gust
58.0 km/h
20 December 1987
Hottest feels-like
43.2 °C
14 October 1997
Coldest feels-like
19.7 °C
25 January 1955
Sunniest day
12.0 h
23 April 1940
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 | 33.2 °C | +1.9 °C | 51 mm | -23 mm |
| Feb | 32.9 °C | +0.8 °C | 22 mm | -40 mm |
| Mar | 32.7 °C | +0.2 °C | 121 mm | +22 mm |
| Apr | 31.1 °C | +0.2 °C | 256 mm | +10 mm |
| May | 29.9 °C | +0.8 °C | 416 mm | +26 mm |
| Jun | 29.7 °C | +1.3 °C | 321 mm | -36 mm |
| Jul | 29.5 °C | +0.9 °C | 284 mm | -3 mm |
| Aug | 31.2 °C | +1.4 °C | 150 mm | -34 mm |
| Sep | 33.0 °C | +1.8 °C | 43 mm | -70 mm |
| Oct | 32.1 °C | +0.4 °C | 141 mm | +36 mm |
| Nov | 31.8 °C | +0.7 °C | 122 mm | -9 mm |
| Dec | 30.9 °C | +0.1 °C | 90 mm | -14 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 Alegre?
Alto Alegre has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 2,152 mm of precipitation per year.
What is the hottest day ever recorded in Alto Alegre?
The hottest day measured in Alto Alegre between 1940 and 2025 was 31 March 1964, reaching 38.6 °C.
What is the coldest day in Alto Alegre?
The coldest day measured in Alto Alegre between 1940 and 2025 was 22 July 1975, at 18.2 °C.
Does it snow in Alto Alegre?
Almost never: Alto Alegre sees virtually no snow, with about 0 frost days per year.
Has the climate of Alto Alegre warmed?
Yes: Alto Alegre warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alto Alegre?
The wettest day measured in Alto Alegre between 1940 and 2025 was 15 April 2006, with 176 mm of rain in 24 hours.
What was the windiest day in Alto Alegre?
The windiest day measured in Alto Alegre between 1940 and 2025 was 23 February 1965, with winds reaching 21.5 km/h.
What is the warmest month in Alto Alegre?
The warmest month in Alto Alegre is March (27.6 °C on average); the coldest is June (24.6 °C).
How much does it rain in Alto Alegre?
Alto Alegre receives on average 2,152 mm of precipitation per year, spread over about 226 rainy days.
Is it sunny in Alto Alegre?
Alto Alegre 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 Alegre?
Yes: Alto Alegre has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alto Alegre?
In Alto Alegre, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 14 October 1997, and the lowest was 19.7 °C on 25 January 1955.
Compare Alto Alegre with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alto Alegre