São Brás de Alportel climate — normals and trends
São Brás de Alportel (Portugal) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.6 °C and it receives 505 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 August (24.5 °C on average) and the coldest is January (9.8 °C). Rainfall peaks in December.
São Brás de Alportel averages 2 frost days, 59 hot days (≥ 30 °C) and 69 rainy days per year.
São Brás de Alportel has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 42.8 °C (on 5 August 2018) and the coldest -7.8 °C (on 6 February 1954).
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
São Brás de AlportelFaro District
- coords
- 37.15°, -7.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.6°C
Average daily high
21.7°C
Average daily low
11.9°C
Annual rainfall
505mm
Sunshine / day
10.8h
Mean relative humidity
68%
Average peak wind
19.7km/h
Seasonal range
14.7°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
59 d/yr
Rainy days (≥ 1 mm)
69 d/yr
Annual snowfall
0.1 cm
Average feels-like high
20.4 °C
Average feels-like low
10.0 °C
Average peak gust
38.6 km/h
Tropical nights (≥ 20 °C)
20 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 = 0.20 · 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
42.8 °C
5 August 2018
Coldest day
-7.8 °C
6 February 1954
Wettest day
83 mm
5 November 1997
Windiest day
69.4 km/h
15 February 1941
Strongest gust
130.7 km/h
5 November 1997
Hottest feels-like
43.9 °C
1 August 2003
Coldest feels-like
-12.8 °C
6 February 1954
Snowiest day
5.7 cm
2 February 1954
Sunniest day
14.6 h
17 June 1941
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 | 15.4 °C | +1.6 °C | 117 mm | +58 mm |
| Feb | 16.2 °C | +1.2 °C | 52 mm | -4 mm |
| Mar | 16.2 °C | -1.1 °C | 179 mm | +116 mm |
| Apr | 19.6 °C | +0.2 °C | 68 mm | +16 mm |
| May | 24.9 °C | +1.8 °C | 19 mm | -14 mm |
| Jun | 31.1 °C | +3.7 °C | 0 mm | -13 mm |
| Jul | 31.7 °C | +0.5 °C | 0 mm | -2 mm |
| Aug | 32.1 °C | +1.0 °C | 0 mm | -3 mm |
| Sep | 28.6 °C | +1.2 °C | 3 mm | -18 mm |
| Oct | 25.5 °C | +3.1 °C | 31 mm | -29 mm |
| Nov | 17.9 °C | +0.4 °C | 105 mm | +36 mm |
| Dec | 14.3 °C | -0.2 °C | 100 mm | +29 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 São Brás de Alportel?
São Brás de Alportel has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.6 °C and it receives 505 mm of precipitation per year.
What is the hottest day ever recorded in São Brás de Alportel?
The hottest day measured in São Brás de Alportel between 1940 and 2025 was 5 August 2018, reaching 42.8 °C.
What is the coldest day in São Brás de Alportel?
The coldest day measured in São Brás de Alportel between 1940 and 2025 was 6 February 1954, at -7.8 °C.
Does it snow in São Brás de Alportel?
Almost never: São Brás de Alportel sees virtually no snow, with about 2 frost days per year.
Has the climate of São Brás de Alportel warmed?
Yes: São Brás de Alportel warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São Brás de Alportel?
The wettest day measured in São Brás de Alportel between 1940 and 2025 was 5 November 1997, with 83 mm of rain in 24 hours.
What was the windiest day in São Brás de Alportel?
The windiest day measured in São Brás de Alportel between 1940 and 2025 was 15 February 1941, with winds reaching 69.4 km/h.
What is the warmest month in São Brás de Alportel?
The warmest month in São Brás de Alportel is August (24.5 °C on average); the coldest is January (9.8 °C).
How much does it rain in São Brás de Alportel?
São Brás de Alportel receives on average 505 mm of precipitation per year, spread over about 69 rainy days.
Is it sunny in São Brás de Alportel?
São Brás de Alportel gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in São Brás de Alportel?
The heaviest 24-hour snowfall measured in São Brás de Alportel between 1940 and 2025 was 2 February 1954, with 5.7 cm.
Are there tropical nights in São Brás de Alportel?
Yes: São Brás de Alportel has on average 20 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in São Brás de Alportel?
In São Brás de Alportel, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 1 August 2003, and the lowest was -12.8 °C on 6 February 1954.
Compare São Brás de Alportel with another city
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Nearby cities
The climate around São Brás de Alportel