Hannut climate — normals and trends
Hannut (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 790 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 (17.6 °C on average) and the coldest is January (2.4 °C). Rainfall peaks in July.
Hannut averages 50 frost days, 3 hot days (≥ 30 °C) and 149 rainy days per year.
Hannut has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 66 to 34 per year over the period.
The hottest day of the period reached 38.7 °C (on 25 July 2019) and the coldest -22.2 °C (on 3 February 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
HannutWallonia
- coords
- 50.67°, 5.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
13.4°C
Average daily low
6.7°C
Annual rainfall
790mm
Sunshine / day
7.4h
Mean relative humidity
80%
Average peak wind
19.9km/h
Seasonal range
15.2°C
Frost days (< 0 °C)
50 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
149 d/yr
Annual snowfall
21.7 cm
Average feels-like high
10.9 °C
Average feels-like low
3.7 °C
Average peak gust
38.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 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
38.7 °C
25 July 2019
Coldest day
-22.2 °C
3 February 1942
Wettest day
59 mm
22 June 2023
Windiest day
59.0 km/h
25 January 1990
Strongest gust
123.8 km/h
18 January 2007
Hottest feels-like
41.0 °C
25 July 2019
Coldest feels-like
-27.9 °C
27 January 1942
Snowiest day
11.0 cm
31 December 1978
Sunniest day
15.7 h
24 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 | 5.0 °C | +0.5 °C | 164 mm | +102 mm |
| Feb | 7.1 °C | +1.3 °C | 40 mm | -18 mm |
| Mar | 13.0 °C | +3.5 °C | 12 mm | -49 mm |
| Apr | 16.9 °C | +3.7 °C | 41 mm | -17 mm |
| May | 19.6 °C | +2.5 °C | 53 mm | -18 mm |
| Jun | 23.6 °C | +3.6 °C | 75 mm | +2 mm |
| Jul | 23.8 °C | +2.0 °C | 88 mm | +11 mm |
| Aug | 24.2 °C | +2.6 °C | 32 mm | -40 mm |
| Sep | 19.5 °C | +0.8 °C | 91 mm | +30 mm |
| Oct | 14.2 °C | +0.1 °C | 72 mm | +10 mm |
| Nov | 10.5 °C | +1.8 °C | 65 mm | -2 mm |
| Dec | 8.2 °C | +2.6 °C | 31 mm | -37 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 Hannut?
Hannut has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 790 mm of precipitation per year.
What is the hottest day ever recorded in Hannut?
The hottest day measured in Hannut between 1940 and 2025 was 25 July 2019, reaching 38.7 °C.
What is the coldest day in Hannut?
The coldest day measured in Hannut between 1940 and 2025 was 3 February 1942, at -22.2 °C.
Does it snow in Hannut?
Yes. Hannut gets on average 21.7 cm of snow per year and has around 50 frost days.
Has the climate of Hannut warmed?
Yes: Hannut warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hannut?
The wettest day measured in Hannut between 1940 and 2025 was 22 June 2023, with 59 mm of rain in 24 hours.
What was the windiest day in Hannut?
The windiest day measured in Hannut between 1940 and 2025 was 25 January 1990, with winds reaching 59.0 km/h.
What is the warmest month in Hannut?
The warmest month in Hannut is July (17.6 °C on average); the coldest is January (2.4 °C).
How much does it rain in Hannut?
Hannut receives on average 790 mm of precipitation per year, spread over about 149 rainy days.
Is it sunny in Hannut?
Hannut gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hannut?
The heaviest 24-hour snowfall measured in Hannut between 1940 and 2025 was 31 December 1978, with 11.0 cm.
Are there tropical nights in Hannut?
Yes: Hannut has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hannut?
In Hannut, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 25 July 2019, and the lowest was -27.9 °C on 27 January 1942.
Compare Hannut with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hannut