Rolim de Moura climate — normals and trends
Rolim de Moura (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.3 °C and it receives 1,448 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 September (26.9 °C on average) and the coldest is May (24.3 °C). Rainfall peaks in January.
Rolim de Moura averages 0 frost days, 208 hot days (≥ 30 °C) and 196 rainy days per year.
Rolim de Moura has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.0 °C (on 17 September 1961) and the coldest 9.6 °C (on 19 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
Rolim de MouraRondônia
- coords
- -11.80°, -61.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.3°C
Average daily high
30.5°C
Average daily low
21.5°C
Annual rainfall
1,448mm
Sunshine / day
9.8h
Mean relative humidity
79%
Average peak wind
9.5km/h
Seasonal range
2.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
208 d/yr
Rainy days (≥ 1 mm)
196 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.4 °C
Average feels-like low
24.6 °C
Average peak gust
26.9 km/h
Tropical nights (≥ 20 °C)
313 d/yr
Solar radiation
18.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.33 · 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
41.0 °C
17 September 1961
Coldest day
9.6 °C
19 July 1975
Wettest day
146 mm
6 February 2021
Windiest day
28.4 km/h
17 July 1975
Strongest gust
61.9 km/h
25 June 1994
Hottest feels-like
44.1 °C
24 October 2015
Coldest feels-like
4.8 °C
18 July 1975
Sunniest day
12.6 h
14 January 1946
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 | 28.8 °C | -0.3 °C | 253 mm | +9 mm |
| Feb | 29.4 °C | +0.4 °C | 216 mm | -19 mm |
| Mar | 29.6 °C | +0.4 °C | 196 mm | -13 mm |
| Apr | 29.8 °C | +0.6 °C | 172 mm | +52 mm |
| May | 30.1 °C | +1.0 °C | 64 mm | +11 mm |
| Jun | 30.1 °C | -0.1 °C | 20 mm | +7 mm |
| Jul | 31.2 °C | -0.4 °C | 0 mm | -8 mm |
| Aug | 33.2 °C | 0.0 °C | 7 mm | -12 mm |
| Sep | 34.2 °C | +1.0 °C | 38 mm | -17 mm |
| Oct | 32.9 °C | +0.7 °C | 101 mm | -9 mm |
| Nov | 32.6 °C | +1.9 °C | 145 mm | -23 mm |
| Dec | 29.1 °C | -0.4 °C | 336 mm | +118 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 Rolim de Moura?
Rolim de Moura has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.3 °C and it receives 1,448 mm of precipitation per year.
What is the hottest day ever recorded in Rolim de Moura?
The hottest day measured in Rolim de Moura between 1940 and 2025 was 17 September 1961, reaching 41.0 °C.
What is the coldest day in Rolim de Moura?
The coldest day measured in Rolim de Moura between 1940 and 2025 was 19 July 1975, at 9.6 °C.
Does it snow in Rolim de Moura?
Almost never: Rolim de Moura sees virtually no snow, with about 0 frost days per year.
Has the climate of Rolim de Moura warmed?
Yes: Rolim de Moura warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rolim de Moura?
The wettest day measured in Rolim de Moura between 1940 and 2025 was 6 February 2021, with 146 mm of rain in 24 hours.
What was the windiest day in Rolim de Moura?
The windiest day measured in Rolim de Moura between 1940 and 2025 was 17 July 1975, with winds reaching 28.4 km/h.
What is the warmest month in Rolim de Moura?
The warmest month in Rolim de Moura is September (26.9 °C on average); the coldest is May (24.3 °C).
How much does it rain in Rolim de Moura?
Rolim de Moura receives on average 1,448 mm of precipitation per year, spread over about 196 rainy days.
Is it sunny in Rolim de Moura?
Rolim de Moura gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Rolim de Moura?
Yes: Rolim de Moura has on average 313 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rolim de Moura?
In Rolim de Moura, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 24 October 2015, and the lowest was 4.8 °C on 18 July 1975.
Compare Rolim de Moura with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rolim de Moura