Illescas climate — normals and trends
Illescas (Spain) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °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 (26.3 °C on average) and the coldest is January (5.3 °C). Rainfall peaks in October.
Illescas averages 31 frost days, 74 hot days (≥ 30 °C) and 78 rainy days per year.
Illescas has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 43 to 19 per year over the period.
The hottest day of the period reached 42.1 °C (on 13 August 2021) and the coldest -17.2 °C (on 24 January 1940).
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
IllescasCastille-La Mancha
- coords
- 40.12°, -3.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.9°C
Average daily high
20.3°C
Average daily low
9.5°C
Annual rainfall
460mm
Sunshine / day
10.5h
Mean relative humidity
62%
Average peak wind
15.1km/h
Seasonal range
21.0°C
Frost days (< 0 °C)
31 d/yr
Hot days (≥ 30 °C)
74 d/yr
Rainy days (≥ 1 mm)
78 d/yr
Annual snowfall
5.2 cm
Average feels-like high
18.5 °C
Average feels-like low
7.3 °C
Average peak gust
31.8 km/h
Tropical nights (≥ 20 °C)
24 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.59 · 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
42.1 °C
13 August 2021
Coldest day
-17.2 °C
24 January 1940
Wettest day
45 mm
3 September 2023
Windiest day
51.9 km/h
25 February 1989
Strongest gust
109.4 km/h
20 December 2019
Hottest feels-like
43.3 °C
24 July 1995
Coldest feels-like
-21.7 °C
24 January 1940
Snowiest day
18.8 cm
9 January 2021
Sunniest day
14.7 h
2 July 1942
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 | 11.9 °C | +2.2 °C | 57 mm | +13 mm |
| Feb | 14.8 °C | +2.8 °C | 22 mm | -20 mm |
| Mar | 13.5 °C | -1.9 °C | 171 mm | +122 mm |
| Apr | 19.2 °C | +1.0 °C | 86 mm | +35 mm |
| May | 23.7 °C | +1.0 °C | 63 mm | +19 mm |
| Jun | 34.2 °C | +5.6 °C | 17 mm | -7 mm |
| Jul | 34.5 °C | +1.4 °C | 1 mm | -8 mm |
| Aug | 35.5 °C | +3.0 °C | 3 mm | -8 mm |
| Sep | 28.8 °C | +1.6 °C | 10 mm | -19 mm |
| Oct | 23.6 °C | +3.2 °C | 38 mm | -15 mm |
| Nov | 14.5 °C | +0.5 °C | 70 mm | +17 mm |
| Dec | 10.9 °C | +0.7 °C | 61 mm | +9 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 Illescas?
Illescas has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 460 mm of precipitation per year.
What is the hottest day ever recorded in Illescas?
The hottest day measured in Illescas between 1940 and 2025 was 13 August 2021, reaching 42.1 °C.
What is the coldest day in Illescas?
The coldest day measured in Illescas between 1940 and 2025 was 24 January 1940, at -17.2 °C.
Does it snow in Illescas?
Yes. Illescas gets on average 5.2 cm of snow per year and has around 31 frost days.
Has the climate of Illescas warmed?
Yes: Illescas warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Illescas?
The wettest day measured in Illescas between 1940 and 2025 was 3 September 2023, with 45 mm of rain in 24 hours.
What was the windiest day in Illescas?
The windiest day measured in Illescas between 1940 and 2025 was 25 February 1989, with winds reaching 51.9 km/h.
What is the warmest month in Illescas?
The warmest month in Illescas is July (26.3 °C on average); the coldest is January (5.3 °C).
How much does it rain in Illescas?
Illescas receives on average 460 mm of precipitation per year, spread over about 78 rainy days.
Is it sunny in Illescas?
Illescas gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Illescas?
The heaviest 24-hour snowfall measured in Illescas between 1940 and 2025 was 9 January 2021, with 18.8 cm.
Are there tropical nights in Illescas?
Yes: Illescas has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Illescas?
In Illescas, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 24 July 1995, and the lowest was -21.7 °C on 24 January 1940.
Compare Illescas with another city
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Nearby cities
The climate around Illescas