Leiderdorp climate — normals and trends
Leiderdorp (The Netherlands) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 830 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 (17.3 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in November.
Leiderdorp averages 26 frost days, 0 hot days (≥ 30 °C) and 154 rainy days per year.
Leiderdorp has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 38 to 14 per year over the period.
The hottest day of the period reached 33.3 °C (on 25 July 2019) and the coldest -15.4 °C (on 27 January 1942).
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
LeiderdorpSouth Holland
- coords
- 52.16°, 4.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
12.3°C
Average daily low
8.2°C
Annual rainfall
830mm
Sunshine / day
8.2h
Mean relative humidity
81%
Average peak wind
26.5km/h
Seasonal range
13.7°C
Frost days (< 0 °C)
26 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
154 d/yr
Annual snowfall
14.5 cm
Average feels-like high
9.3 °C
Average feels-like low
4.4 °C
Average peak gust
42.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
33.3 °C
25 July 2019
Coldest day
-15.4 °C
27 January 1942
Wettest day
55 mm
14 July 2011
Windiest day
81.3 km/h
25 January 1990
Strongest gust
137.9 km/h
25 January 1990
Hottest feels-like
35.2 °C
26 July 2019
Coldest feels-like
-22.1 °C
14 January 1987
Snowiest day
12.0 cm
7 February 2021
Sunniest day
16.0 h
25 June 2023
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 | 6.1 °C | +1.0 °C | 77 mm | +9 mm |
| Feb | 6.2 °C | +0.8 °C | 36 mm | -17 mm |
| Mar | 10.4 °C | +2.6 °C | 4 mm | -51 mm |
| Apr | 13.8 °C | +3.0 °C | 22 mm | -26 mm |
| May | 16.0 °C | +1.5 °C | 40 mm | -15 mm |
| Jun | 19.9 °C | +2.6 °C | 63 mm | +5 mm |
| Jul | 21.0 °C | +1.8 °C | 93 mm | +18 mm |
| Aug | 21.1 °C | +1.4 °C | 38 mm | -43 mm |
| Sep | 18.6 °C | +1.1 °C | 91 mm | +6 mm |
| Oct | 14.4 °C | +0.5 °C | 136 mm | +50 mm |
| Nov | 10.5 °C | +1.1 °C | 89 mm | -1 mm |
| Dec | 8.5 °C | +1.9 °C | 34 mm | -44 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 Leiderdorp?
Leiderdorp has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 830 mm of precipitation per year.
What is the hottest day ever recorded in Leiderdorp?
The hottest day measured in Leiderdorp between 1940 and 2025 was 25 July 2019, reaching 33.3 °C.
What is the coldest day in Leiderdorp?
The coldest day measured in Leiderdorp between 1940 and 2025 was 27 January 1942, at -15.4 °C.
Does it snow in Leiderdorp?
Yes. Leiderdorp gets on average 14.5 cm of snow per year and has around 26 frost days.
Has the climate of Leiderdorp warmed?
Yes: Leiderdorp warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Leiderdorp?
The wettest day measured in Leiderdorp between 1940 and 2025 was 14 July 2011, with 55 mm of rain in 24 hours.
What was the windiest day in Leiderdorp?
The windiest day measured in Leiderdorp between 1940 and 2025 was 25 January 1990, with winds reaching 81.3 km/h.
What is the warmest month in Leiderdorp?
The warmest month in Leiderdorp is August (17.3 °C on average); the coldest is January (3.6 °C).
How much does it rain in Leiderdorp?
Leiderdorp receives on average 830 mm of precipitation per year, spread over about 154 rainy days.
Is it sunny in Leiderdorp?
Leiderdorp gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Leiderdorp?
The heaviest 24-hour snowfall measured in Leiderdorp between 1940 and 2025 was 7 February 2021, with 12.0 cm.
Are there tropical nights in Leiderdorp?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Leiderdorp.
What was the most extreme apparent temperature in Leiderdorp?
In Leiderdorp, between 1940 and 2025, the highest apparent temperature reached 35.2 °C on 26 July 2019, and the lowest was -22.1 °C on 14 January 1987.
Compare Leiderdorp with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Leiderdorp