Pedro do Rosário climate — normals and trends
Pedro do Rosário (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.6 °C and it receives 2,141 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 (28.2 °C on average) and the coldest is March (25.6 °C). Rainfall peaks in March.
Pedro do Rosário averages 0 frost days, 259 hot days (≥ 30 °C) and 209 rainy days per year.
Pedro do Rosário 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 37.3 °C (on 20 November 1942) and the coldest 19.1 °C (on 27 July 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
Pedro do RosárioMaranhão
- coords
- -2.97°, -45.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.6°C
Average daily high
31.2°C
Average daily low
23.5°C
Annual rainfall
2,141mm
Sunshine / day
10.6h
Mean relative humidity
80%
Average peak wind
11.9km/h
Seasonal range
2.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
259 d/yr
Rainy days (≥ 1 mm)
209 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.1 °C
Average feels-like low
27.7 °C
Average peak gust
34.1 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
18.5 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
37.3 °C
20 November 1942
Coldest day
19.1 °C
27 July 1975
Wettest day
221 mm
13 April 1997
Windiest day
23.5 km/h
9 November 1965
Strongest gust
60.1 km/h
7 October 1983
Hottest feels-like
42.7 °C
25 October 2017
Coldest feels-like
20.7 °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 | 31.3 °C | +0.5 °C | 472 mm | +214 mm |
| Feb | 30.3 °C | +0.3 °C | 345 mm | +24 mm |
| Mar | 30.9 °C | +1.2 °C | 438 mm | +7 mm |
| Apr | 31.1 °C | +1.5 °C | 311 mm | -105 mm |
| May | 31.1 °C | +1.3 °C | 122 mm | -159 mm |
| Jun | 30.3 °C | +0.4 °C | 107 mm | -23 mm |
| Jul | 30.6 °C | +0.3 °C | 87 mm | +9 mm |
| Aug | 31.7 °C | +0.1 °C | 26 mm | -8 mm |
| Sep | 33.6 °C | +0.8 °C | 6 mm | -16 mm |
| Oct | 33.9 °C | +0.4 °C | 9 mm | -13 mm |
| Nov | 33.5 °C | 0.0 °C | 18 mm | -20 mm |
| Dec | 32.4 °C | 0.0 °C | 111 mm | +0 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 Pedro do Rosário?
Pedro do Rosário has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 2,141 mm of precipitation per year.
What is the hottest day ever recorded in Pedro do Rosário?
The hottest day measured in Pedro do Rosário between 1940 and 2025 was 20 November 1942, reaching 37.3 °C.
What is the coldest day in Pedro do Rosário?
The coldest day measured in Pedro do Rosário between 1940 and 2025 was 27 July 1975, at 19.1 °C.
Does it snow in Pedro do Rosário?
Almost never: Pedro do Rosário sees virtually no snow, with about 0 frost days per year.
Has the climate of Pedro do Rosário warmed?
Yes: Pedro do Rosário warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pedro do Rosário?
The wettest day measured in Pedro do Rosário between 1940 and 2025 was 13 April 1997, with 221 mm of rain in 24 hours.
What was the windiest day in Pedro do Rosário?
The windiest day measured in Pedro do Rosário between 1940 and 2025 was 9 November 1965, with winds reaching 23.5 km/h.
What is the warmest month in Pedro do Rosário?
The warmest month in Pedro do Rosário is November (28.2 °C on average); the coldest is March (25.6 °C).
How much does it rain in Pedro do Rosário?
Pedro do Rosário receives on average 2,141 mm of precipitation per year, spread over about 209 rainy days.
Is it sunny in Pedro do Rosário?
Pedro do Rosário gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Pedro do Rosário?
Yes: Pedro do Rosário has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pedro do Rosário?
In Pedro do Rosário, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 25 October 2017, and the lowest was 20.7 °C on 4 July 1974.
Compare Pedro do Rosário with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Pedro do Rosário