Alcântara climate — normals and trends
Alcântara (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.7 °C and it receives 1,940 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 November (27.5 °C on average) and the coldest is March (25.9 °C). Rainfall peaks in March.
Alcântara averages 0 frost days, 136 hot days (≥ 30 °C) and 213 rainy days per year.
Alcântara has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.5 °C (on 24 August 1944) and the coldest 22.2 °C (on 20 February 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
AlcântaraMaranhão
- coords
- -2.40°, -44.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.7°C
Average daily high
29.4°C
Average daily low
24.8°C
Annual rainfall
1,940mm
Sunshine / day
10.7h
Mean relative humidity
81%
Average peak wind
17.5km/h
Seasonal range
1.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
136 d/yr
Rainy days (≥ 1 mm)
213 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.0 °C
Average feels-like low
28.6 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.45 · 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
33.5 °C
24 August 1944
Coldest day
22.2 °C
20 February 1975
Wettest day
248 mm
15 May 1999
Windiest day
33.0 km/h
9 November 1965
Strongest gust
61.2 km/h
6 December 1981
Hottest feels-like
40.3 °C
25 October 2017
Coldest feels-like
23.0 °C
4 July 1974
Sunniest day
12.0 h
2 January 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 | 29.4 °C | +0.5 °C | 393 mm | +178 mm |
| Feb | 28.8 °C | +0.4 °C | 318 mm | +27 mm |
| Mar | 29.2 °C | +0.9 °C | 406 mm | +9 mm |
| Apr | 29.4 °C | +0.9 °C | 331 mm | -44 mm |
| May | 29.8 °C | +1.0 °C | 148 mm | -134 mm |
| Jun | 29.5 °C | +0.5 °C | 85 mm | -60 mm |
| Jul | 29.8 °C | +0.6 °C | 68 mm | -19 mm |
| Aug | 30.7 °C | +0.6 °C | 27 mm | +0 mm |
| Sep | 31.2 °C | +0.9 °C | 10 mm | -4 mm |
| Oct | 31.0 °C | +0.6 °C | 14 mm | +3 mm |
| Nov | 30.5 °C | 0.0 °C | 11 mm | -8 mm |
| Dec | 30.1 °C | 0.0 °C | 61 mm | -16 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 Alcântara?
Alcântara has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.7 °C and it receives 1,940 mm of precipitation per year.
What is the hottest day ever recorded in Alcântara?
The hottest day measured in Alcântara between 1940 and 2025 was 24 August 1944, reaching 33.5 °C.
What is the coldest day in Alcântara?
The coldest day measured in Alcântara between 1940 and 2025 was 20 February 1975, at 22.2 °C.
Does it snow in Alcântara?
Almost never: Alcântara sees virtually no snow, with about 0 frost days per year.
Has the climate of Alcântara warmed?
Yes: Alcântara warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alcântara?
The wettest day measured in Alcântara between 1940 and 2025 was 15 May 1999, with 248 mm of rain in 24 hours.
What was the windiest day in Alcântara?
The windiest day measured in Alcântara between 1940 and 2025 was 9 November 1965, with winds reaching 33.0 km/h.
What is the warmest month in Alcântara?
The warmest month in Alcântara is November (27.5 °C on average); the coldest is March (25.9 °C).
How much does it rain in Alcântara?
Alcântara receives on average 1,940 mm of precipitation per year, spread over about 213 rainy days.
Is it sunny in Alcântara?
Alcântara gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Alcântara?
Yes: Alcântara has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alcântara?
In Alcântara, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 25 October 2017, and the lowest was 23.0 °C on 4 July 1974.
Compare Alcântara with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alcântara