Ventosa climate — normals and trends
Ventosa (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 15.7 °C and it receives 605 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 (21.2 °C on average) and the coldest is January (10.3 °C). Rainfall peaks in December.
Ventosa averages 1 frost days, 19 hot days (≥ 30 °C) and 87 rainy days per year.
Ventosa has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 42.8 °C (on 21 July 1941) and the coldest -5.4 °C (on 15 January 1945).
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
VentosaLisbon District
- coords
- 39.13°, -9.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.7°C
Average daily high
20.0°C
Average daily low
12.2°C
Annual rainfall
605mm
Sunshine / day
10.3h
Mean relative humidity
75%
Average peak wind
20.5km/h
Seasonal range
10.9°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
87 d/yr
Annual snowfall
0.1 cm
Average feels-like high
18.8 °C
Average feels-like low
10.4 °C
Average peak gust
40.0 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
17.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.31 · 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
21 July 1941
Coldest day
-5.4 °C
15 January 1945
Wettest day
79 mm
13 November 2025
Windiest day
68.8 km/h
15 February 1941
Strongest gust
121.3 km/h
19 January 2013
Hottest feels-like
44.1 °C
1 August 2003
Coldest feels-like
-9.7 °C
15 January 1945
Snowiest day
6.9 cm
13 January 1945
Sunniest day
14.8 h
18 June 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 | 15.5 °C | +1.9 °C | 146 mm | +68 mm |
| Feb | 16.1 °C | +1.5 °C | 58 mm | -12 mm |
| Mar | 16.2 °C | -0.6 °C | 183 mm | +115 mm |
| Apr | 19.5 °C | +1.1 °C | 119 mm | +62 mm |
| May | 22.3 °C | +1.5 °C | 36 mm | -10 mm |
| Jun | 26.9 °C | +2.7 °C | 5 mm | -11 mm |
| Jul | 27.8 °C | +1.3 °C | 2 mm | -3 mm |
| Aug | 28.3 °C | +1.5 °C | 1 mm | -6 mm |
| Sep | 25.1 °C | -0.1 °C | 18 mm | -10 mm |
| Oct | 23.9 °C | +2.4 °C | 49 mm | -20 mm |
| Nov | 17.1 °C | +0.3 °C | 215 mm | +134 mm |
| Dec | 14.4 °C | +0.2 °C | 132 mm | +51 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 Ventosa?
Ventosa has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 15.7 °C and it receives 605 mm of precipitation per year.
What is the hottest day ever recorded in Ventosa?
The hottest day measured in Ventosa between 1940 and 2025 was 21 July 1941, reaching 42.8 °C.
What is the coldest day in Ventosa?
The coldest day measured in Ventosa between 1940 and 2025 was 15 January 1945, at -5.4 °C.
Does it snow in Ventosa?
Almost never: Ventosa sees virtually no snow, with about 1 frost days per year.
Has the climate of Ventosa warmed?
Yes: Ventosa warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ventosa?
The wettest day measured in Ventosa between 1940 and 2025 was 13 November 2025, with 79 mm of rain in 24 hours.
What was the windiest day in Ventosa?
The windiest day measured in Ventosa between 1940 and 2025 was 15 February 1941, with winds reaching 68.8 km/h.
What is the warmest month in Ventosa?
The warmest month in Ventosa is August (21.2 °C on average); the coldest is January (10.3 °C).
How much does it rain in Ventosa?
Ventosa receives on average 605 mm of precipitation per year, spread over about 87 rainy days.
Is it sunny in Ventosa?
Ventosa gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ventosa?
The heaviest 24-hour snowfall measured in Ventosa between 1940 and 2025 was 13 January 1945, with 6.9 cm.
Are there tropical nights in Ventosa?
Yes: Ventosa has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ventosa?
In Ventosa, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 1 August 2003, and the lowest was -9.7 °C on 15 January 1945.
Compare Ventosa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ventosa