São Domingos do Maranhão climate — normals and trends
São Domingos do Maranhão (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.6 °C and it receives 1,277 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 September (28.6 °C on average) and the coldest is March (25.0 °C). Rainfall peaks in March.
São Domingos do Maranhão averages 0 frost days, 266 hot days (≥ 30 °C) and 158 rainy days per year.
São Domingos do Maranhão has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.3 °C (on 18 October 1958) and the coldest 17.5 °C (on 27 June 1970).
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
São Domingos do MaranhãoMaranhão
- coords
- -5.58°, -44.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.6°C
Average daily high
31.8°C
Average daily low
22.6°C
Annual rainfall
1,277mm
Sunshine / day
10.4h
Mean relative humidity
72%
Average peak wind
11.3km/h
Seasonal range
3.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
266 d/yr
Rainy days (≥ 1 mm)
158 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.1 °C
Average feels-like low
25.5 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
361 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °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
39.3 °C
18 October 1958
Coldest day
17.5 °C
27 June 1970
Wettest day
182 mm
26 January 1977
Windiest day
28.2 km/h
17 August 1991
Strongest gust
63.7 km/h
17 August 1991
Hottest feels-like
44.0 °C
21 October 2015
Coldest feels-like
16.9 °C
28 July 1957
Sunniest day
12.0 h
17 January 1989
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 | 30.5 °C | +0.7 °C | 330 mm | +96 mm |
| Feb | 30.5 °C | +1.0 °C | 118 mm | -109 mm |
| Mar | 30.2 °C | +1.0 °C | 196 mm | -71 mm |
| Apr | 31.2 °C | +1.6 °C | 78 mm | -111 mm |
| May | 32.6 °C | +2.2 °C | 13 mm | -62 mm |
| Jun | 33.0 °C | +1.4 °C | 4 mm | -10 mm |
| Jul | 33.9 °C | +1.2 °C | 1 mm | -5 mm |
| Aug | 34.4 °C | +0.4 °C | 4 mm | -0 mm |
| Sep | 36.0 °C | +1.0 °C | 2 mm | -10 mm |
| Oct | 35.2 °C | +0.6 °C | 68 mm | +36 mm |
| Nov | 34.1 °C | +0.9 °C | 12 mm | -67 mm |
| Dec | 31.8 °C | +0.2 °C | 102 mm | -36 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 São Domingos do Maranhão?
São Domingos do Maranhão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 1,277 mm of precipitation per year.
What is the hottest day ever recorded in São Domingos do Maranhão?
The hottest day measured in São Domingos do Maranhão between 1940 and 2025 was 18 October 1958, reaching 39.3 °C.
What is the coldest day in São Domingos do Maranhão?
The coldest day measured in São Domingos do Maranhão between 1940 and 2025 was 27 June 1970, at 17.5 °C.
Does it snow in São Domingos do Maranhão?
Almost never: São Domingos do Maranhão sees virtually no snow, with about 0 frost days per year.
Has the climate of São Domingos do Maranhão warmed?
Yes: São Domingos do Maranhão warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São Domingos do Maranhão?
The wettest day measured in São Domingos do Maranhão between 1940 and 2025 was 26 January 1977, with 182 mm of rain in 24 hours.
What was the windiest day in São Domingos do Maranhão?
The windiest day measured in São Domingos do Maranhão between 1940 and 2025 was 17 August 1991, with winds reaching 28.2 km/h.
What is the warmest month in São Domingos do Maranhão?
The warmest month in São Domingos do Maranhão is September (28.6 °C on average); the coldest is March (25.0 °C).
How much does it rain in São Domingos do Maranhão?
São Domingos do Maranhão receives on average 1,277 mm of precipitation per year, spread over about 158 rainy days.
Is it sunny in São Domingos do Maranhão?
São Domingos do Maranhão gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
Are there tropical nights in São Domingos do Maranhão?
Yes: São Domingos do Maranhão has on average 361 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in São Domingos do Maranhão?
In São Domingos do Maranhão, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 21 October 2015, and the lowest was 16.9 °C on 28 July 1957.
Compare São Domingos do Maranhão with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around São Domingos do Maranhão