Altamira climate — normals and trends
Altamira (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.3 °C and it receives 1,748 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 (28.2 °C on average) and the coldest is February (25.1 °C). Rainfall peaks in March.
Altamira averages 0 frost days, 216 hot days (≥ 30 °C) and 228 rainy days per year.
Altamira has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.5 °C (on 19 October 1941) and the coldest 19.2 °C (on 6 July 1974).
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
AltamiraPará
- coords
- -3.20°, -52.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.3°C
Average daily high
30.6°C
Average daily low
23.1°C
Annual rainfall
1,748mm
Sunshine / day
9.5h
Mean relative humidity
81%
Average peak wind
11.0km/h
Seasonal range
3.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
216 d/yr
Rainy days (≥ 1 mm)
228 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.0 °C
Average feels-like low
27.1 °C
Average peak gust
30.5 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
17.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.14 · 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
38.5 °C
19 October 1941
Coldest day
19.2 °C
6 July 1974
Wettest day
194 mm
2 April 2014
Windiest day
21.3 km/h
30 October 1992
Strongest gust
55.8 km/h
8 July 2022
Hottest feels-like
43.7 °C
17 October 2023
Coldest feels-like
20.6 °C
16 July 2008
Sunniest day
12.2 h
24 December 1940
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 | 29.4 °C | +0.3 °C | 281 mm | +21 mm |
| Feb | 29.2 °C | +0.3 °C | 392 mm | +128 mm |
| Mar | 29.5 °C | +0.5 °C | 329 mm | +34 mm |
| Apr | 30.6 °C | +1.5 °C | 142 mm | -116 mm |
| May | 30.8 °C | +1.3 °C | 146 mm | -22 mm |
| Jun | 30.4 °C | +0.6 °C | 67 mm | -5 mm |
| Jul | 31.6 °C | +1.0 °C | 23 mm | -19 mm |
| Aug | 32.4 °C | 0.0 °C | 34 mm | +2 mm |
| Sep | 33.1 °C | 0.0 °C | 14 mm | -25 mm |
| Oct | 33.3 °C | +0.1 °C | 26 mm | -29 mm |
| Nov | 32.7 °C | +0.5 °C | 51 mm | -46 mm |
| Dec | 30.6 °C | +0.1 °C | 151 mm | -17 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 Altamira?
Altamira has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 1,748 mm of precipitation per year.
What is the hottest day ever recorded in Altamira?
The hottest day measured in Altamira between 1940 and 2025 was 19 October 1941, reaching 38.5 °C.
What is the coldest day in Altamira?
The coldest day measured in Altamira between 1940 and 2025 was 6 July 1974, at 19.2 °C.
Does it snow in Altamira?
Almost never: Altamira sees virtually no snow, with about 0 frost days per year.
Has the climate of Altamira warmed?
Yes: Altamira warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Altamira?
The wettest day measured in Altamira between 1940 and 2025 was 2 April 2014, with 194 mm of rain in 24 hours.
What was the windiest day in Altamira?
The windiest day measured in Altamira between 1940 and 2025 was 30 October 1992, with winds reaching 21.3 km/h.
What is the warmest month in Altamira?
The warmest month in Altamira is October (28.2 °C on average); the coldest is February (25.1 °C).
How much does it rain in Altamira?
Altamira receives on average 1,748 mm of precipitation per year, spread over about 228 rainy days.
Is it sunny in Altamira?
Altamira gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Altamira?
Yes: Altamira has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Altamira?
In Altamira, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 17 October 2023, and the lowest was 20.6 °C on 16 July 2008.
Compare Altamira with another city
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Nearby cities
The climate around Altamira