Castuera climate — normals and trends
Castuera (Spain) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 16.1 °C and it receives 460 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 (26.2 °C on average) and the coldest is January (7.4 °C). Rainfall peaks in November.
Castuera averages 11 frost days, 76 hot days (≥ 30 °C) and 74 rainy days per year.
Castuera has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 16 to 6 per year over the period.
The hottest day of the period reached 43.5 °C (on 14 August 2021) and the coldest -6.1 °C (on 28 January 2005).
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
CastueraExtremadura
- coords
- 38.73°, -5.54°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.1°C
Average daily high
21.4°C
Average daily low
10.8°C
Annual rainfall
460mm
Sunshine / day
10.4h
Mean relative humidity
62%
Average peak wind
13.5km/h
Seasonal range
18.8°C
Frost days (< 0 °C)
11 d/yr
Hot days (≥ 30 °C)
76 d/yr
Rainy days (≥ 1 mm)
74 d/yr
Annual snowfall
1.2 cm
Average feels-like high
20.3 °C
Average feels-like low
9.0 °C
Average peak gust
30.4 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
43.5 °C
14 August 2021
Coldest day
-6.1 °C
28 January 2005
Wettest day
86 mm
16 December 1955
Windiest day
44.9 km/h
6 November 1997
Strongest gust
108.7 km/h
1 December 1959
Hottest feels-like
44.1 °C
14 August 2021
Coldest feels-like
-10.4 °C
28 January 2005
Snowiest day
9.1 cm
3 January 1971
Sunniest day
14.7 h
25 June 2025
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 | 13.6 °C | +1.9 °C | 101 mm | +51 mm |
| Feb | 15.9 °C | +2.3 °C | 27 mm | -20 mm |
| Mar | 15.4 °C | -1.3 °C | 169 mm | +116 mm |
| Apr | 20.2 °C | +1.0 °C | 67 mm | +19 mm |
| May | 25.2 °C | +1.8 °C | 28 mm | -10 mm |
| Jun | 34.1 °C | +5.4 °C | 7 mm | -13 mm |
| Jul | 34.8 °C | +2.0 °C | 0 mm | -5 mm |
| Aug | 35.7 °C | +3.2 °C | 1 mm | -7 mm |
| Sep | 29.8 °C | +1.6 °C | 21 mm | -5 mm |
| Oct | 25.7 °C | +3.6 °C | 56 mm | +2 mm |
| Nov | 16.5 °C | +0.6 °C | 70 mm | +14 mm |
| Dec | 12.8 °C | +0.5 °C | 78 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 Castuera?
Castuera has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 16.1 °C and it receives 460 mm of precipitation per year.
What is the hottest day ever recorded in Castuera?
The hottest day measured in Castuera between 1940 and 2025 was 14 August 2021, reaching 43.5 °C.
What is the coldest day in Castuera?
The coldest day measured in Castuera between 1940 and 2025 was 28 January 2005, at -6.1 °C.
Does it snow in Castuera?
Yes. Castuera gets on average 1.2 cm of snow per year and has around 11 frost days.
Has the climate of Castuera warmed?
Yes: Castuera warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Castuera?
The wettest day measured in Castuera between 1940 and 2025 was 16 December 1955, with 86 mm of rain in 24 hours.
What was the windiest day in Castuera?
The windiest day measured in Castuera between 1940 and 2025 was 6 November 1997, with winds reaching 44.9 km/h.
What is the warmest month in Castuera?
The warmest month in Castuera is July (26.2 °C on average); the coldest is January (7.4 °C).
How much does it rain in Castuera?
Castuera receives on average 460 mm of precipitation per year, spread over about 74 rainy days.
Is it sunny in Castuera?
Castuera gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
What is the biggest single-day snowfall in Castuera?
The heaviest 24-hour snowfall measured in Castuera between 1940 and 2025 was 3 January 1971, with 9.1 cm.
Are there tropical nights in Castuera?
Yes: Castuera has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Castuera?
In Castuera, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 14 August 2021, and the lowest was -10.4 °C on 28 January 2005.
Compare Castuera with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Castuera