Harlingen climate — normals and trends
Harlingen (The Netherlands) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 865 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 (17.1 °C on average) and the coldest is February (3.3 °C). Rainfall peaks in November.
Harlingen averages 21 frost days, 0 hot days (≥ 30 °C) and 156 rainy days per year.
Harlingen 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 32 to 10 per year over the period.
The hottest day of the period reached 29.4 °C (on 26 July 2018) and the coldest -11.7 °C (on 22 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
HarlingenFriesland
- coords
- 53.17°, 5.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
11.3°C
Average daily low
8.7°C
Annual rainfall
865mm
Sunshine / day
8.2h
Mean relative humidity
82%
Average peak wind
31.4km/h
Seasonal range
13.8°C
Frost days (< 0 °C)
21 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
15.4 cm
Average feels-like high
7.9 °C
Average feels-like low
4.1 °C
Average peak gust
44.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
29.4 °C
26 July 2018
Coldest day
-11.7 °C
22 January 1940
Wettest day
54 mm
15 September 1994
Windiest day
85.0 km/h
26 January 1990
Strongest gust
139.7 km/h
26 January 1990
Hottest feels-like
32.4 °C
25 June 2019
Coldest feels-like
-20.6 °C
26 January 1942
Snowiest day
13.9 cm
25 February 1958
Sunniest day
16.2 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 | 5.6 °C | +0.8 °C | 64 mm | -5 mm |
| Feb | 4.7 °C | +0.2 °C | 34 mm | -19 mm |
| Mar | 8.6 °C | +2.2 °C | 10 mm | -42 mm |
| Apr | 12.0 °C | +2.8 °C | 15 mm | -29 mm |
| May | 14.5 °C | +1.7 °C | 44 mm | -9 mm |
| Jun | 18.5 °C | +2.7 °C | 74 mm | +15 mm |
| Jul | 20.0 °C | +2.0 °C | 85 mm | +3 mm |
| Aug | 19.7 °C | +1.2 °C | 41 mm | -52 mm |
| Sep | 17.6 °C | +1.0 °C | 117 mm | +26 mm |
| Oct | 13.7 °C | +0.5 °C | 131 mm | +40 mm |
| Nov | 9.7 °C | +0.5 °C | 98 mm | +3 mm |
| Dec | 7.5 °C | +1.0 °C | 35 mm | -48 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 Harlingen?
Harlingen has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 865 mm of precipitation per year.
What is the hottest day ever recorded in Harlingen?
The hottest day measured in Harlingen between 1940 and 2025 was 26 July 2018, reaching 29.4 °C.
What is the coldest day in Harlingen?
The coldest day measured in Harlingen between 1940 and 2025 was 22 January 1940, at -11.7 °C.
Does it snow in Harlingen?
Yes. Harlingen gets on average 15.4 cm of snow per year and has around 21 frost days.
Has the climate of Harlingen warmed?
Yes: Harlingen warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Harlingen?
The wettest day measured in Harlingen between 1940 and 2025 was 15 September 1994, with 54 mm of rain in 24 hours.
What was the windiest day in Harlingen?
The windiest day measured in Harlingen between 1940 and 2025 was 26 January 1990, with winds reaching 85.0 km/h.
What is the warmest month in Harlingen?
The warmest month in Harlingen is August (17.1 °C on average); the coldest is February (3.3 °C).
How much does it rain in Harlingen?
Harlingen receives on average 865 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in Harlingen?
Harlingen 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 Harlingen?
The heaviest 24-hour snowfall measured in Harlingen between 1940 and 2025 was 25 February 1958, with 13.9 cm.
Are there tropical nights in Harlingen?
Yes: Harlingen has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Harlingen?
In Harlingen, between 1940 and 2025, the highest apparent temperature reached 32.4 °C on 25 June 2019, and the lowest was -20.6 °C on 26 January 1942.
Compare Harlingen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Harlingen