Serro climate — normals and trends
Serro (Brazil) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 19.2 °C and it receives 1,639 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 February (21.3 °C on average) and the coldest is July (16.1 °C). Rainfall peaks in December.
Serro averages 0 frost days, 9 hot days (≥ 30 °C) and 151 rainy days per year.
Serro has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.1 °C (on 15 October 1963) and the coldest 4.6 °C (on 20 May 2022).
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
SerroMinas Gerais
- coords
- -18.60°, -43.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.2°C
Average daily high
24.3°C
Average daily low
15.1°C
Annual rainfall
1,639mm
Sunshine / day
10.0h
Mean relative humidity
78%
Average peak wind
11.6km/h
Seasonal range
5.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
0.0 cm
Average feels-like high
25.9 °C
Average feels-like low
15.6 °C
Average peak gust
30.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
18.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.62 · 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
35.1 °C
15 October 1963
Coldest day
4.6 °C
20 May 2022
Wettest day
142 mm
24 January 1983
Windiest day
26.3 km/h
25 November 1957
Strongest gust
73.8 km/h
25 November 1957
Hottest feels-like
40.9 °C
11 February 1998
Coldest feels-like
1.3 °C
19 May 2022
Sunniest day
13.1 h
5 January 1941
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 | 26.4 °C | +0.5 °C | 378 mm | +125 mm |
| Feb | 27.2 °C | +1.2 °C | 14 mm | -168 mm |
| Mar | 26.6 °C | +1.1 °C | 157 mm | -38 mm |
| Apr | 25.0 °C | +0.8 °C | 125 mm | +22 mm |
| May | 22.0 °C | -0.8 °C | 17 mm | -25 mm |
| Jun | 22.4 °C | +0.5 °C | 8 mm | -10 mm |
| Jul | 21.8 °C | +0.1 °C | 11 mm | -4 mm |
| Aug | 23.5 °C | +0.1 °C | 6 mm | -11 mm |
| Sep | 25.3 °C | +0.2 °C | 34 mm | -22 mm |
| Oct | 24.6 °C | -0.8 °C | 66 mm | -104 mm |
| Nov | 25.9 °C | +1.2 °C | 112 mm | -170 mm |
| Dec | 26.8 °C | +1.7 °C | 253 mm | -53 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 Serro?
Serro has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 19.2 °C and it receives 1,639 mm of precipitation per year.
What is the hottest day ever recorded in Serro?
The hottest day measured in Serro between 1940 and 2025 was 15 October 1963, reaching 35.1 °C.
What is the coldest day in Serro?
The coldest day measured in Serro between 1940 and 2025 was 20 May 2022, at 4.6 °C.
Does it snow in Serro?
Almost never: Serro sees virtually no snow, with about 0 frost days per year.
Has the climate of Serro warmed?
Yes: Serro warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Serro?
The wettest day measured in Serro between 1940 and 2025 was 24 January 1983, with 142 mm of rain in 24 hours.
What was the windiest day in Serro?
The windiest day measured in Serro between 1940 and 2025 was 25 November 1957, with winds reaching 26.3 km/h.
What is the warmest month in Serro?
The warmest month in Serro is February (21.3 °C on average); the coldest is July (16.1 °C).
How much does it rain in Serro?
Serro receives on average 1,639 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Serro?
Serro gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Serro?
Yes: Serro has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Serro?
In Serro, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 11 February 1998, and the lowest was 1.3 °C on 19 May 2022.
Compare Serro with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Serro