Serrana climate — normals and trends
Serrana (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.0 °C and it receives 1,440 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 (23.9 °C on average) and the coldest is June (18.6 °C). Rainfall peaks in December.
Serrana averages 0 frost days, 85 hot days (≥ 30 °C) and 153 rainy days per year.
Serrana has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.0 °C (on 18 October 1963) and the coldest 1.4 °C (on 21 July 1981).
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
SerranaSão Paulo
- coords
- -21.21°, -47.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.0°C
Average daily high
27.7°C
Average daily low
17.3°C
Annual rainfall
1,440mm
Sunshine / day
10.1h
Mean relative humidity
71%
Average peak wind
12.5km/h
Seasonal range
5.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
85 d/yr
Rainy days (≥ 1 mm)
153 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.8 °C
Average feels-like low
18.0 °C
Average peak gust
30.2 km/h
Tropical nights (≥ 20 °C)
81 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.64 · 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
39.0 °C
18 October 1963
Coldest day
1.4 °C
21 July 1981
Wettest day
144 mm
3 January 1961
Windiest day
29.9 km/h
8 September 1978
Strongest gust
79.6 km/h
30 July 1989
Hottest feels-like
42.0 °C
18 January 1995
Coldest feels-like
-1.8 °C
21 July 1981
Sunniest day
13.3 h
12 December 1942
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 | 30.4 °C | +1.9 °C | 127 mm | -117 mm |
| Feb | 30.9 °C | +2.2 °C | 93 mm | -105 mm |
| Mar | 31.0 °C | +2.5 °C | 92 mm | -69 mm |
| Apr | 27.9 °C | +0.4 °C | 101 mm | +23 mm |
| May | 26.9 °C | +1.4 °C | 5 mm | -46 mm |
| Jun | 25.7 °C | +0.8 °C | 33 mm | +2 mm |
| Jul | 25.8 °C | +0.6 °C | 6 mm | -17 mm |
| Aug | 28.3 °C | +0.7 °C | 6 mm | -18 mm |
| Sep | 31.1 °C | +1.7 °C | 15 mm | -47 mm |
| Oct | 29.7 °C | +0.5 °C | 114 mm | -28 mm |
| Nov | 29.8 °C | +1.2 °C | 92 mm | -89 mm |
| Dec | 30.5 °C | +2.3 °C | 134 mm | -111 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 Serrana?
Serrana has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.0 °C and it receives 1,440 mm of precipitation per year.
What is the hottest day ever recorded in Serrana?
The hottest day measured in Serrana between 1940 and 2025 was 18 October 1963, reaching 39.0 °C.
What is the coldest day in Serrana?
The coldest day measured in Serrana between 1940 and 2025 was 21 July 1981, at 1.4 °C.
Does it snow in Serrana?
Almost never: Serrana sees virtually no snow, with about 0 frost days per year.
Has the climate of Serrana warmed?
Yes: Serrana warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Serrana?
The wettest day measured in Serrana between 1940 and 2025 was 3 January 1961, with 144 mm of rain in 24 hours.
What was the windiest day in Serrana?
The windiest day measured in Serrana between 1940 and 2025 was 8 September 1978, with winds reaching 29.9 km/h.
What is the warmest month in Serrana?
The warmest month in Serrana is February (23.9 °C on average); the coldest is June (18.6 °C).
How much does it rain in Serrana?
Serrana receives on average 1,440 mm of precipitation per year, spread over about 153 rainy days.
Is it sunny in Serrana?
Serrana gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Serrana?
Yes: Serrana has on average 81 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Serrana?
In Serrana, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 18 January 1995, and the lowest was -1.8 °C on 21 July 1981.
Compare Serrana with another city
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Nearby cities
The climate around Serrana