Ghlin climate — normals and trends
Ghlin (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 742 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 (17.7 °C on average) and the coldest is January (2.7 °C). Rainfall peaks in December.
Ghlin averages 47 frost days, 3 hot days (≥ 30 °C) and 144 rainy days per year.
Ghlin 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 62 to 32 per year over the period.
The hottest day of the period reached 39.1 °C (on 25 July 2019) and the coldest -19.2 °C (on 30 December 1950).
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
GhlinWallonia
- coords
- 50.47°, 3.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
13.5°C
Average daily low
6.8°C
Annual rainfall
742mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
19.7km/h
Seasonal range
15.0°C
Frost days (< 0 °C)
47 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
18.7 cm
Average feels-like high
11.0 °C
Average feels-like low
3.9 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.8 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
39.1 °C
25 July 2019
Coldest day
-19.2 °C
30 December 1950
Wettest day
56 mm
29 August 1996
Windiest day
56.7 km/h
25 January 1990
Strongest gust
124.2 km/h
18 January 2007
Hottest feels-like
40.3 °C
25 July 2019
Coldest feels-like
-24.7 °C
21 February 1956
Snowiest day
11.4 cm
10 December 1990
Sunniest day
15.9 h
3 July 2011
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 | 5.2 °C | +0.4 °C | 161 mm | +98 mm |
| Feb | 7.1 °C | +1.0 °C | 51 mm | -6 mm |
| Mar | 13.1 °C | +3.4 °C | 15 mm | -46 mm |
| Apr | 17.4 °C | +4.2 °C | 18 mm | -36 mm |
| May | 19.5 °C | +2.5 °C | 56 mm | -11 mm |
| Jun | 24.0 °C | +4.1 °C | 53 mm | -11 mm |
| Jul | 24.3 °C | +2.5 °C | 68 mm | +2 mm |
| Aug | 24.6 °C | +2.9 °C | 26 mm | -36 mm |
| Sep | 19.9 °C | +1.1 °C | 48 mm | -7 mm |
| Oct | 14.6 °C | +0.3 °C | 74 mm | +14 mm |
| Nov | 10.4 °C | +1.5 °C | 64 mm | -3 mm |
| Dec | 8.3 °C | +2.5 °C | 29 mm | -38 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 Ghlin?
Ghlin has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 742 mm of precipitation per year.
What is the hottest day ever recorded in Ghlin?
The hottest day measured in Ghlin between 1940 and 2025 was 25 July 2019, reaching 39.1 °C.
What is the coldest day in Ghlin?
The coldest day measured in Ghlin between 1940 and 2025 was 30 December 1950, at -19.2 °C.
Does it snow in Ghlin?
Yes. Ghlin gets on average 18.7 cm of snow per year and has around 47 frost days.
Has the climate of Ghlin warmed?
Yes: Ghlin warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ghlin?
The wettest day measured in Ghlin between 1940 and 2025 was 29 August 1996, with 56 mm of rain in 24 hours.
What was the windiest day in Ghlin?
The windiest day measured in Ghlin between 1940 and 2025 was 25 January 1990, with winds reaching 56.7 km/h.
What is the warmest month in Ghlin?
The warmest month in Ghlin is July (17.7 °C on average); the coldest is January (2.7 °C).
How much does it rain in Ghlin?
Ghlin receives on average 742 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Ghlin?
Ghlin gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ghlin?
The heaviest 24-hour snowfall measured in Ghlin between 1940 and 2025 was 10 December 1990, with 11.4 cm.
Are there tropical nights in Ghlin?
Yes: Ghlin has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ghlin?
In Ghlin, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 25 July 2019, and the lowest was -24.7 °C on 21 February 1956.
Compare Ghlin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ghlin