Santarém climate — normals and trends
Santarém (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.0 °C and it receives 2,974 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 (28.8 °C on average) and the coldest is February (26.1 °C). Rainfall peaks in March.
Santarém averages 0 frost days, 143 hot days (≥ 30 °C) and 266 rainy days per year.
Santarém has warmed by +0.5 °C between 1940 and 2025, or +0.06 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.7 °C (on 8 September 1958) and the coldest 21.7 °C (on 24 June 1962).
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
SantarémPará
- coords
- -2.44°, -54.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.0°C
Average daily high
29.6°C
Average daily low
24.9°C
Annual rainfall
2,974mm
Sunshine / day
10.0h
Mean relative humidity
79%
Average peak wind
13.6km/h
Seasonal range
2.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
143 d/yr
Rainy days (≥ 1 mm)
266 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.7 °C
Average feels-like low
28.7 °C
Average peak gust
27.4 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
19.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.5 °C
since 1940
+0.1 °C per decade · r² = 0.08 · p = 0.007
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
36.7 °C
8 September 1958
Coldest day
21.7 °C
24 June 1962
Wettest day
212 mm
31 January 1958
Windiest day
27.2 km/h
16 January 1965
Strongest gust
47.9 km/h
5 February 1992
Hottest feels-like
40.7 °C
18 October 1997
Coldest feels-like
24.3 °C
21 July 1975
Sunniest day
12.1 h
1 December 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 | 29.2 °C | +0.6 °C | 351 mm | -55 mm |
| Feb | 28.5 °C | 0.0 °C | 581 mm | +196 mm |
| Mar | 28.6 °C | +0.1 °C | 312 mm | -137 mm |
| Apr | 29.5 °C | +1.0 °C | 303 mm | -126 mm |
| May | 29.6 °C | +1.0 °C | 145 mm | -196 mm |
| Jun | 29.0 °C | +0.2 °C | 147 mm | -34 mm |
| Jul | 29.8 °C | +0.5 °C | 105 mm | -9 mm |
| Aug | 30.3 °C | -0.3 °C | 111 mm | +31 mm |
| Sep | 32.1 °C | +0.5 °C | 7 mm | -69 mm |
| Oct | 32.0 °C | +0.1 °C | 70 mm | -23 mm |
| Nov | 32.1 °C | +1.1 °C | 80 mm | -79 mm |
| Dec | 30.3 °C | +0.5 °C | 254 mm | -8 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 Santarém?
Santarém has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 2,974 mm of precipitation per year.
What is the hottest day ever recorded in Santarém?
The hottest day measured in Santarém between 1940 and 2025 was 8 September 1958, reaching 36.7 °C.
What is the coldest day in Santarém?
The coldest day measured in Santarém between 1940 and 2025 was 24 June 1962, at 21.7 °C.
Does it snow in Santarém?
Almost never: Santarém sees virtually no snow, with about 0 frost days per year.
Has the climate of Santarém warmed?
Yes: Santarém warmed by +0.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Santarém?
The wettest day measured in Santarém between 1940 and 2025 was 31 January 1958, with 212 mm of rain in 24 hours.
What was the windiest day in Santarém?
The windiest day measured in Santarém between 1940 and 2025 was 16 January 1965, with winds reaching 27.2 km/h.
What is the warmest month in Santarém?
The warmest month in Santarém is October (28.8 °C on average); the coldest is February (26.1 °C).
How much does it rain in Santarém?
Santarém receives on average 2,974 mm of precipitation per year, spread over about 266 rainy days.
Is it sunny in Santarém?
Santarém gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Santarém?
Yes: Santarém has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Santarém?
In Santarém, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 18 October 1997, and the lowest was 24.3 °C on 21 July 1975.
Compare Santarém with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Santarém