São Luís Gonzaga do Maranhão climate — normals and trends
São Luís Gonzaga do Maranhão (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.2 °C and it receives 1,393 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 (29.3 °C on average) and the coldest is March (25.6 °C). Rainfall peaks in March.
São Luís Gonzaga do Maranhão averages 0 frost days, 292 hot days (≥ 30 °C) and 167 rainy days per year.
São Luís Gonzaga 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 39.7 °C (on 24 October 2012) and the coldest 18.1 °C (on 7 July 1959).
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 Luís Gonzaga do MaranhãoMaranhão
- coords
- -4.38°, -44.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.2°C
Average daily high
32.2°C
Average daily low
23.2°C
Annual rainfall
1,393mm
Sunshine / day
10.5h
Mean relative humidity
76%
Average peak wind
10.7km/h
Seasonal range
3.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
292 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.1 °C
Average feels-like low
27.0 °C
Average peak gust
30.0 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
19.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.15 · 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
39.7 °C
24 October 2012
Coldest day
18.1 °C
7 July 1959
Wettest day
185 mm
10 January 1945
Windiest day
24.9 km/h
16 August 1991
Strongest gust
56.5 km/h
16 August 1991
Hottest feels-like
44.5 °C
25 October 2017
Coldest feels-like
17.9 °C
3 August 2001
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 | 31.8 °C | +0.9 °C | 380 mm | +149 mm |
| Feb | 30.9 °C | +0.6 °C | 261 mm | +5 mm |
| Mar | 30.9 °C | +1.0 °C | 321 mm | +19 mm |
| Apr | 31.8 °C | +1.8 °C | 203 mm | -32 mm |
| May | 31.8 °C | +1.3 °C | 72 mm | -39 mm |
| Jun | 32.2 °C | +1.0 °C | 15 mm | -16 mm |
| Jul | 33.6 °C | +1.1 °C | 6 mm | -6 mm |
| Aug | 34.3 °C | +0.3 °C | 3 mm | -4 mm |
| Sep | 35.9 °C | +0.9 °C | 1 mm | -8 mm |
| Oct | 35.6 °C | +0.4 °C | 26 mm | +5 mm |
| Nov | 35.2 °C | +0.8 °C | 14 mm | -37 mm |
| Dec | 33.3 °C | +0.3 °C | 110 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 São Luís Gonzaga do Maranhão?
São Luís Gonzaga do Maranhão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.2 °C and it receives 1,393 mm of precipitation per year.
What is the hottest day ever recorded in São Luís Gonzaga do Maranhão?
The hottest day measured in São Luís Gonzaga do Maranhão between 1940 and 2025 was 24 October 2012, reaching 39.7 °C.
What is the coldest day in São Luís Gonzaga do Maranhão?
The coldest day measured in São Luís Gonzaga do Maranhão between 1940 and 2025 was 7 July 1959, at 18.1 °C.
Does it snow in São Luís Gonzaga do Maranhão?
Almost never: São Luís Gonzaga do Maranhão sees virtually no snow, with about 0 frost days per year.
Has the climate of São Luís Gonzaga do Maranhão warmed?
Yes: São Luís Gonzaga do Maranhão warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São Luís Gonzaga do Maranhão?
The wettest day measured in São Luís Gonzaga do Maranhão between 1940 and 2025 was 10 January 1945, with 185 mm of rain in 24 hours.
What was the windiest day in São Luís Gonzaga do Maranhão?
The windiest day measured in São Luís Gonzaga do Maranhão between 1940 and 2025 was 16 August 1991, with winds reaching 24.9 km/h.
What is the warmest month in São Luís Gonzaga do Maranhão?
The warmest month in São Luís Gonzaga do Maranhão is October (29.3 °C on average); the coldest is March (25.6 °C).
How much does it rain in São Luís Gonzaga do Maranhão?
São Luís Gonzaga do Maranhão receives on average 1,393 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in São Luís Gonzaga do Maranhão?
São Luís Gonzaga do Maranhão gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in São Luís Gonzaga do Maranhão?
Yes: São Luís Gonzaga do Maranhão has on average 362 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in São Luís Gonzaga do Maranhão?
In São Luís Gonzaga do Maranhão, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 25 October 2017, and the lowest was 17.9 °C on 3 August 2001.
Compare São Luís Gonzaga do Maranhão with another city
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Nearby cities
The climate around São Luís Gonzaga do Maranhão