Pedreiras climate — normals and trends
Pedreiras (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.2 °C and it receives 1,444 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 (25.6 °C). Rainfall peaks in March.
Pedreiras averages 0 frost days, 290 hot days (≥ 30 °C) and 165 rainy days per year.
Pedreiras has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.9 °C (on 24 October 2012) and the coldest 18.5 °C (on 30 July 2012).
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
PedreirasMaranhão
- coords
- -4.57°, -44.59°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.2°C
Average daily high
32.3°C
Average daily low
23.1°C
Annual rainfall
1,444mm
Sunshine / day
10.6h
Mean relative humidity
75%
Average peak wind
10.5km/h
Seasonal range
3.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
290 d/yr
Rainy days (≥ 1 mm)
165 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.1 °C
Average feels-like low
26.9 °C
Average peak gust
30.3 km/h
Tropical nights (≥ 20 °C)
363 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.12 · 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
39.9 °C
24 October 2012
Coldest day
18.5 °C
30 July 2012
Wettest day
160 mm
27 March 1997
Windiest day
24.6 km/h
17 August 1991
Strongest gust
58.0 km/h
22 June 2006
Hottest feels-like
44.5 °C
21 October 2015
Coldest feels-like
17.8 °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 | 31.7 °C | +0.9 °C | 353 mm | +115 mm |
| Feb | 30.9 °C | +0.6 °C | 270 mm | +9 mm |
| Mar | 30.9 °C | +1.0 °C | 354 mm | +33 mm |
| Apr | 31.7 °C | +1.7 °C | 206 mm | -47 mm |
| May | 31.8 °C | +1.4 °C | 74 mm | -45 mm |
| Jun | 32.2 °C | +0.9 °C | 15 mm | -18 mm |
| Jul | 33.6 °C | +0.9 °C | 7 mm | -5 mm |
| Aug | 34.3 °C | +0.1 °C | 3 mm | -3 mm |
| Sep | 35.9 °C | +0.8 °C | 1 mm | -8 mm |
| Oct | 35.8 °C | +0.6 °C | 18 mm | -2 mm |
| Nov | 35.2 °C | +0.8 °C | 10 mm | -38 mm |
| Dec | 33.2 °C | +0.3 °C | 99 mm | -26 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 Pedreiras?
Pedreiras has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.2 °C and it receives 1,444 mm of precipitation per year.
What is the hottest day ever recorded in Pedreiras?
The hottest day measured in Pedreiras between 1940 and 2025 was 24 October 2012, reaching 39.9 °C.
What is the coldest day in Pedreiras?
The coldest day measured in Pedreiras between 1940 and 2025 was 30 July 2012, at 18.5 °C.
Does it snow in Pedreiras?
Almost never: Pedreiras sees virtually no snow, with about 0 frost days per year.
Has the climate of Pedreiras warmed?
Yes: Pedreiras warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pedreiras?
The wettest day measured in Pedreiras between 1940 and 2025 was 27 March 1997, with 160 mm of rain in 24 hours.
What was the windiest day in Pedreiras?
The windiest day measured in Pedreiras between 1940 and 2025 was 17 August 1991, with winds reaching 24.6 km/h.
What is the warmest month in Pedreiras?
The warmest month in Pedreiras is October (29.2 °C on average); the coldest is March (25.6 °C).
How much does it rain in Pedreiras?
Pedreiras receives on average 1,444 mm of precipitation per year, spread over about 165 rainy days.
Is it sunny in Pedreiras?
Pedreiras gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Pedreiras?
Yes: Pedreiras has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pedreiras?
In Pedreiras, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 21 October 2015, and the lowest was 17.8 °C on 3 August 2001.
Compare Pedreiras with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Pedreiras