São João do Soter climate — normals and trends
São João do Soter (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.1 °C and it receives 1,383 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 (29.2 °C on average) and the coldest is March (25.4 °C). Rainfall peaks in March.
São João do Soter averages 0 frost days, 290 hot days (≥ 30 °C) and 156 rainy days per year.
São João do Soter 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 40.4 °C (on 24 October 2012) and the coldest 18.1 °C (on 15 July 1976).
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 João do SoterMaranhão
- coords
- -5.11°, -43.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.1°C
Average daily high
32.4°C
Average daily low
22.9°C
Annual rainfall
1,383mm
Sunshine / day
10.5h
Mean relative humidity
72%
Average peak wind
10.7km/h
Seasonal range
3.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
290 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.8 °C
Average feels-like low
26.1 °C
Average peak gust
30.7 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
19.2 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
40.4 °C
24 October 2012
Coldest day
18.1 °C
15 July 1976
Wettest day
153 mm
10 April 1976
Windiest day
26.9 km/h
17 August 1991
Strongest gust
61.9 km/h
17 August 1991
Hottest feels-like
44.7 °C
31 October 2012
Coldest feels-like
17.3 °C
28 July 1957
Sunniest day
12.0 h
30 November 1950
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 | 31.5 °C | +0.7 °C | 319 mm | +88 mm |
| Feb | 31.2 °C | +1.0 °C | 162 mm | -92 mm |
| Mar | 30.7 °C | +0.9 °C | 288 mm | -24 mm |
| Apr | 31.9 °C | +1.9 °C | 99 mm | -141 mm |
| May | 33.0 °C | +2.3 °C | 15 mm | -91 mm |
| Jun | 33.3 °C | +1.4 °C | 5 mm | -18 mm |
| Jul | 34.2 °C | +1.2 °C | 1 mm | -7 mm |
| Aug | 34.8 °C | +0.4 °C | 5 mm | -0 mm |
| Sep | 36.5 °C | +1.1 °C | 0 mm | -8 mm |
| Oct | 36.3 °C | +0.9 °C | 15 mm | -9 mm |
| Nov | 35.6 °C | +1.3 °C | 9 mm | -47 mm |
| Dec | 32.9 °C | +0.1 °C | 82 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 João do Soter?
São João do Soter has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 1,383 mm of precipitation per year.
What is the hottest day ever recorded in São João do Soter?
The hottest day measured in São João do Soter between 1940 and 2025 was 24 October 2012, reaching 40.4 °C.
What is the coldest day in São João do Soter?
The coldest day measured in São João do Soter between 1940 and 2025 was 15 July 1976, at 18.1 °C.
Does it snow in São João do Soter?
Almost never: São João do Soter sees virtually no snow, with about 0 frost days per year.
Has the climate of São João do Soter warmed?
Yes: São João do Soter warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São João do Soter?
The wettest day measured in São João do Soter between 1940 and 2025 was 10 April 1976, with 153 mm of rain in 24 hours.
What was the windiest day in São João do Soter?
The windiest day measured in São João do Soter between 1940 and 2025 was 17 August 1991, with winds reaching 26.9 km/h.
What is the warmest month in São João do Soter?
The warmest month in São João do Soter is October (29.2 °C on average); the coldest is March (25.4 °C).
How much does it rain in São João do Soter?
São João do Soter receives on average 1,383 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in São João do Soter?
São João do Soter 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 João do Soter?
Yes: São João do Soter 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 João do Soter?
In São João do Soter, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 31 October 2012, and the lowest was 17.3 °C on 28 July 1957.
Compare São João do Soter with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around São João do Soter