Santo André climate — normals and trends
Santo André (Portugal) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 567 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 July (23.4 °C on average) and the coldest is January (9.5 °C). Rainfall peaks in December.
Santo André averages 3 frost days, 67 hot days (≥ 30 °C) and 81 rainy days per year.
Santo André has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The number of frost days there went from about 5 to 1 per year over the period.
The hottest day of the period reached 46.2 °C (on 1 August 2003) and the coldest -5.1 °C (on 22 December 1978).
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
Santo AndréPortalegre District
- coords
- 39.06°, -8.24°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
22.1°C
Average daily low
11.1°C
Annual rainfall
567mm
Sunshine / day
10.1h
Mean relative humidity
70%
Average peak wind
17.1km/h
Seasonal range
13.9°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
67 d/yr
Rainy days (≥ 1 mm)
81 d/yr
Annual snowfall
0.2 cm
Average feels-like high
20.9 °C
Average feels-like low
9.5 °C
Average peak gust
35.5 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
16.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.18 · 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
46.2 °C
1 August 2003
Coldest day
-5.1 °C
22 December 1978
Wettest day
66 mm
25 October 2006
Windiest day
55.9 km/h
15 February 1941
Strongest gust
110.2 km/h
30 December 1981
Hottest feels-like
46.4 °C
1 August 2003
Coldest feels-like
-8.9 °C
22 December 1978
Snowiest day
5.6 cm
29 January 2006
Sunniest day
14.7 h
30 June 2025
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 | 15.8 °C | +2.0 °C | 134 mm | +65 mm |
| Feb | 16.8 °C | +1.5 °C | 46 mm | -19 mm |
| Mar | 17.1 °C | -0.9 °C | 176 mm | +111 mm |
| Apr | 20.8 °C | +0.7 °C | 100 mm | +44 mm |
| May | 25.6 °C | +2.0 °C | 35 mm | -8 mm |
| Jun | 32.8 °C | +4.6 °C | 6 mm | -12 mm |
| Jul | 33.9 °C | +2.3 °C | 2 mm | -3 mm |
| Aug | 34.7 °C | +3.1 °C | 1 mm | -5 mm |
| Sep | 29.0 °C | +0.7 °C | 15 mm | -14 mm |
| Oct | 26.6 °C | +3.7 °C | 33 mm | -32 mm |
| Nov | 17.5 °C | +0.1 °C | 152 mm | +80 mm |
| Dec | 14.5 °C | +0.2 °C | 96 mm | +21 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 Santo André?
Santo André has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 567 mm of precipitation per year.
What is the hottest day ever recorded in Santo André?
The hottest day measured in Santo André between 1940 and 2025 was 1 August 2003, reaching 46.2 °C.
What is the coldest day in Santo André?
The coldest day measured in Santo André between 1940 and 2025 was 22 December 1978, at -5.1 °C.
Does it snow in Santo André?
Almost never: Santo André sees virtually no snow, with about 3 frost days per year.
Has the climate of Santo André warmed?
Yes: Santo André warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Santo André?
The wettest day measured in Santo André between 1940 and 2025 was 25 October 2006, with 66 mm of rain in 24 hours.
What was the windiest day in Santo André?
The windiest day measured in Santo André between 1940 and 2025 was 15 February 1941, with winds reaching 55.9 km/h.
What is the warmest month in Santo André?
The warmest month in Santo André is July (23.4 °C on average); the coldest is January (9.5 °C).
How much does it rain in Santo André?
Santo André receives on average 567 mm of precipitation per year, spread over about 81 rainy days.
Is it sunny in Santo André?
Santo André gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
What is the biggest single-day snowfall in Santo André?
The heaviest 24-hour snowfall measured in Santo André between 1940 and 2025 was 29 January 2006, with 5.6 cm.
Are there tropical nights in Santo André?
Yes: Santo André has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Santo André?
In Santo André, between 1940 and 2025, the highest apparent temperature reached 46.4 °C on 1 August 2003, and the lowest was -8.9 °C on 22 December 1978.
Compare Santo André with another city
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Nearby cities
The climate around Santo André