Castro climate — normals and trends
Castro (Spain) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 11.7 °C and it receives 954 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 (18.2 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in December.
Castro averages 29 frost days, 5 hot days (≥ 30 °C) and 134 rainy days per year.
Castro has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 44 to 14 per year over the period.
The hottest day of the period reached 36.9 °C (on 23 August 2023) and the coldest -14.5 °C (on 15 February 1960).
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
CastroGalicia
- coords
- 42.77°, -7.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.7°C
Average daily high
16.3°C
Average daily low
7.6°C
Annual rainfall
954mm
Sunshine / day
8.9h
Mean relative humidity
80%
Average peak wind
15.8km/h
Seasonal range
12.5°C
Frost days (< 0 °C)
29 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
134 d/yr
Annual snowfall
7.5 cm
Average feels-like high
14.7 °C
Average feels-like low
5.6 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
36.9 °C
23 August 2023
Coldest day
-14.5 °C
15 February 1960
Wettest day
75 mm
20 January 1941
Windiest day
59.1 km/h
15 February 1941
Strongest gust
139.0 km/h
24 January 2009
Hottest feels-like
38.6 °C
12 July 2022
Coldest feels-like
-19.2 °C
23 February 1956
Snowiest day
12.8 cm
24 February 1956
Sunniest day
15.0 h
1 June 1940
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 | 11.6 °C | +2.2 °C | 205 mm | +95 mm |
| Feb | 12.6 °C | +2.1 °C | 79 mm | -17 mm |
| Mar | 13.2 °C | +0.1 °C | 88 mm | -4 mm |
| Apr | 17.3 °C | +2.6 °C | 152 mm | +65 mm |
| May | 19.1 °C | +1.8 °C | 94 mm | +15 mm |
| Jun | 25.2 °C | +4.2 °C | 35 mm | -17 mm |
| Jul | 25.4 °C | +1.7 °C | 15 mm | -14 mm |
| Aug | 27.8 °C | +3.9 °C | 16 mm | -16 mm |
| Sep | 21.7 °C | 0.0 °C | 39 mm | -17 mm |
| Oct | 20.2 °C | +2.8 °C | 70 mm | -26 mm |
| Nov | 12.7 °C | +0.2 °C | 159 mm | +49 mm |
| Dec | 10.3 °C | +0.4 °C | 122 mm | +6 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 Castro?
Castro has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 11.7 °C and it receives 954 mm of precipitation per year.
What is the hottest day ever recorded in Castro?
The hottest day measured in Castro between 1940 and 2025 was 23 August 2023, reaching 36.9 °C.
What is the coldest day in Castro?
The coldest day measured in Castro between 1940 and 2025 was 15 February 1960, at -14.5 °C.
Does it snow in Castro?
Yes. Castro gets on average 7.5 cm of snow per year and has around 29 frost days.
Has the climate of Castro warmed?
Yes: Castro warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Castro?
The wettest day measured in Castro between 1940 and 2025 was 20 January 1941, with 75 mm of rain in 24 hours.
What was the windiest day in Castro?
The windiest day measured in Castro between 1940 and 2025 was 15 February 1941, with winds reaching 59.1 km/h.
What is the warmest month in Castro?
The warmest month in Castro is August (18.2 °C on average); the coldest is January (5.7 °C).
How much does it rain in Castro?
Castro receives on average 954 mm of precipitation per year, spread over about 134 rainy days.
Is it sunny in Castro?
Castro gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Castro?
The heaviest 24-hour snowfall measured in Castro between 1940 and 2025 was 24 February 1956, with 12.8 cm.
Are there tropical nights in Castro?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Castro.
What was the most extreme apparent temperature in Castro?
In Castro, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 12 July 2022, and the lowest was -19.2 °C on 23 February 1956.
Compare Castro with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Castro