Araioses climate — normals and trends
Araioses (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.5 °C and it receives 1,208 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 (28.5 °C on average) and the coldest is March (26.3 °C). Rainfall peaks in March.
Araioses averages 0 frost days, 291 hot days (≥ 30 °C) and 148 rainy days per year.
Araioses has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.4 °C (on 12 September 1942) and the coldest 20.2 °C (on 4 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
AraiosesMaranhão
- coords
- -2.89°, -41.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.5°C
Average daily high
32.2°C
Average daily low
24.3°C
Annual rainfall
1,208mm
Sunshine / day
11.0h
Mean relative humidity
74%
Average peak wind
20.1km/h
Seasonal range
2.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
291 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.7 °C
Average feels-like low
27.4 °C
Average peak gust
39.6 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
20.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.40 · 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
38.4 °C
12 September 1942
Coldest day
20.2 °C
4 July 1974
Wettest day
219 mm
28 March 1997
Windiest day
36.4 km/h
25 October 2012
Strongest gust
64.8 km/h
10 November 1996
Hottest feels-like
41.2 °C
30 September 1998
Coldest feels-like
20.2 °C
4 July 1974
Sunniest day
12.0 h
6 November 1944
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 | 31.3 °C | +0.1 °C | 365 mm | +219 mm |
| Feb | 30.8 °C | +0.5 °C | 166 mm | -28 mm |
| Mar | 30.5 °C | +0.7 °C | 309 mm | +19 mm |
| Apr | 30.8 °C | +0.9 °C | 163 mm | -105 mm |
| May | 31.5 °C | +0.9 °C | 42 mm | -137 mm |
| Jun | 32.0 °C | +0.5 °C | 24 mm | -22 mm |
| Jul | 33.6 °C | +0.8 °C | 8 mm | -12 mm |
| Aug | 34.7 °C | +0.4 °C | 7 mm | +3 mm |
| Sep | 35.9 °C | +1.2 °C | 1 mm | -2 mm |
| Oct | 35.9 °C | +1.3 °C | 3 mm | -3 mm |
| Nov | 34.3 °C | +0.2 °C | 3 mm | -7 mm |
| Dec | 33.0 °C | -0.1 °C | 26 mm | -19 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 Araioses?
Araioses has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.5 °C and it receives 1,208 mm of precipitation per year.
What is the hottest day ever recorded in Araioses?
The hottest day measured in Araioses between 1940 and 2025 was 12 September 1942, reaching 38.4 °C.
What is the coldest day in Araioses?
The coldest day measured in Araioses between 1940 and 2025 was 4 July 1974, at 20.2 °C.
Does it snow in Araioses?
Almost never: Araioses sees virtually no snow, with about 0 frost days per year.
Has the climate of Araioses warmed?
Yes: Araioses warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Araioses?
The wettest day measured in Araioses between 1940 and 2025 was 28 March 1997, with 219 mm of rain in 24 hours.
What was the windiest day in Araioses?
The windiest day measured in Araioses between 1940 and 2025 was 25 October 2012, with winds reaching 36.4 km/h.
What is the warmest month in Araioses?
The warmest month in Araioses is November (28.5 °C on average); the coldest is March (26.3 °C).
How much does it rain in Araioses?
Araioses receives on average 1,208 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Araioses?
Araioses gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
Are there tropical nights in Araioses?
Yes: Araioses has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Araioses?
In Araioses, between 1940 and 2025, the highest apparent temperature reached 41.2 °C on 30 September 1998, and the lowest was 20.2 °C on 4 July 1974.
Compare Araioses with another city
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Nearby cities
The climate around Araioses