Mãe do Rio climate — normals and trends
Mãe do Rio (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.7 °C and it receives 1,722 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 (28.5 °C on average) and the coldest is March (25.5 °C). Rainfall peaks in March.
Mãe do Rio averages 0 frost days, 276 hot days (≥ 30 °C) and 211 rainy days per year.
Mãe do Rio has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.8 °C (on 18 October 1941) and the coldest 18.9 °C (on 24 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
Mãe do RioPará
- coords
- -2.05°, -47.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.7°C
Average daily high
31.6°C
Average daily low
22.9°C
Annual rainfall
1,722mm
Sunshine / day
10.3h
Mean relative humidity
79%
Average peak wind
13.0km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
276 d/yr
Rainy days (≥ 1 mm)
211 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.6 °C
Average feels-like low
26.9 °C
Average peak gust
34.1 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
18.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
38.8 °C
18 October 1941
Coldest day
18.9 °C
24 July 1975
Wettest day
185 mm
27 March 1960
Windiest day
24.5 km/h
4 November 1944
Strongest gust
60.5 km/h
6 December 1981
Hottest feels-like
44.3 °C
3 April 1998
Coldest feels-like
21.1 °C
27 July 1975
Sunniest day
12.0 h
22 September 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.1 °C | +0.2 °C | 291 mm | +69 mm |
| Feb | 30.6 °C | +0.4 °C | 385 mm | +107 mm |
| Mar | 30.7 °C | +0.8 °C | 430 mm | +91 mm |
| Apr | 31.1 °C | +1.1 °C | 226 mm | -92 mm |
| May | 31.9 °C | +1.6 °C | 139 mm | -64 mm |
| Jun | 31.2 °C | +0.6 °C | 95 mm | +3 mm |
| Jul | 31.7 °C | +0.8 °C | 44 mm | -17 mm |
| Aug | 32.2 °C | 0.0 °C | 33 mm | +5 mm |
| Sep | 33.3 °C | -0.1 °C | 11 mm | -10 mm |
| Oct | 33.7 °C | -0.5 °C | 16 mm | -2 mm |
| Nov | 33.7 °C | -0.4 °C | 29 mm | -8 mm |
| Dec | 32.9 °C | +0.2 °C | 69 mm | -37 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 Mãe do Rio?
Mãe do Rio has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.7 °C and it receives 1,722 mm of precipitation per year.
What is the hottest day ever recorded in Mãe do Rio?
The hottest day measured in Mãe do Rio between 1940 and 2025 was 18 October 1941, reaching 38.8 °C.
What is the coldest day in Mãe do Rio?
The coldest day measured in Mãe do Rio between 1940 and 2025 was 24 July 1975, at 18.9 °C.
Does it snow in Mãe do Rio?
Almost never: Mãe do Rio sees virtually no snow, with about 0 frost days per year.
Has the climate of Mãe do Rio warmed?
Yes: Mãe do Rio warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mãe do Rio?
The wettest day measured in Mãe do Rio between 1940 and 2025 was 27 March 1960, with 185 mm of rain in 24 hours.
What was the windiest day in Mãe do Rio?
The windiest day measured in Mãe do Rio between 1940 and 2025 was 4 November 1944, with winds reaching 24.5 km/h.
What is the warmest month in Mãe do Rio?
The warmest month in Mãe do Rio is November (28.5 °C on average); the coldest is March (25.5 °C).
How much does it rain in Mãe do Rio?
Mãe do Rio receives on average 1,722 mm of precipitation per year, spread over about 211 rainy days.
Is it sunny in Mãe do Rio?
Mãe do Rio gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Mãe do Rio?
Yes: Mãe do Rio has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mãe do Rio?
In Mãe do Rio, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 3 April 1998, and the lowest was 21.1 °C on 27 July 1975.
Compare Mãe do Rio with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mãe do Rio