Gemmenich climate — normals and trends
Gemmenich has a temperate oceanic climate, averaging 9.5 °C annually with 858 mm of rain per year.
Climate normals · ERA5
GemmenichWallonia
- coords
- 50.75°, 6.00°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
9.5°C
Average daily high
12.8°C
Average daily low
6.2°C
Annual rainfall
858mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
19.4km/h
Seasonal range
15.7°C
Frost days (< 0 °C)
59 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
161 d/yr
Annual snowfall
40.1 cm
Average feels-like high
10.2 °C
Average feels-like low
3.1 °C
Average peak gust
39.0 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.1 °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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
39.7 °C
25 July 2019
Coldest day
-20.9 °C
1 January 1979
Wettest day
75 mm
14 July 2021
Windiest day
57.5 km/h
18 January 2007
Strongest gust
132.1 km/h
24 November 1984
Hottest feels-like
40.0 °C
6 July 1957
Coldest feels-like
-25.9 °C
1 January 1979
Snowiest day
15.2 cm
1 February 1953
Sunniest day
15.5 h
2 July 2018
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 4.4 °C | +0.7 °C | 151 mm | +77 mm |
| Feb | 6.3 °C | +1.4 °C | 34 mm | -33 mm |
| Mar | 12.5 °C | +3.8 °C | 13 mm | -56 mm |
| Apr | 16.0 °C | +3.5 °C | 64 mm | +1 mm |
| May | 19.0 °C | +2.4 °C | 53 mm | -23 mm |
| Jun | 23.8 °C | +4.3 °C | 62 mm | -15 mm |
| Jul | 23.8 °C | +2.5 °C | 105 mm | +24 mm |
| Aug | 24.0 °C | +2.9 °C | 30 mm | -45 mm |
| Sep | 18.8 °C | +0.8 °C | 93 mm | +30 mm |
| Oct | 13.2 °C | -0.2 °C | 86 mm | +22 mm |
| Nov | 9.8 °C | +1.9 °C | 65 mm | -7 mm |
| Dec | 7.7 °C | +2.9 °C | 34 mm | -43 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Gemmenich (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 858 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 (17.3 °C on average) and the coldest is January (1.7 °C). Rainfall peaks in July.
Gemmenich averages 59 frost days, 3 hot days (≥ 30 °C) and 161 rainy days per year.
Gemmenich has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 76 to 42 per year over the period.
The hottest day of the period reached 39.7 °C (on 25 July 2019) and the coldest -20.9 °C (on 1 January 1979).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Frequently asked questions
What is the climate of Gemmenich?
Gemmenich has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 858 mm of precipitation per year.
What is the hottest day ever recorded in Gemmenich?
The hottest day measured in Gemmenich between 1940 and 2025 was 25 July 2019, reaching 39.7 °C.
What is the coldest day in Gemmenich?
The coldest day measured in Gemmenich between 1940 and 2025 was 1 January 1979, at -20.9 °C.
Does it snow in Gemmenich?
Yes. Gemmenich gets on average 40.1 cm of snow per year and has around 59 frost days.
Has the climate of Gemmenich warmed?
Yes: Gemmenich warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gemmenich?
The wettest day measured in Gemmenich between 1940 and 2025 was 14 July 2021, with 75 mm of rain in 24 hours.
What was the windiest day in Gemmenich?
The windiest day measured in Gemmenich between 1940 and 2025 was 18 January 2007, with winds reaching 57.5 km/h.
What is the warmest month in Gemmenich?
The warmest month in Gemmenich is July (17.3 °C on average); the coldest is January (1.7 °C).
How much does it rain in Gemmenich?
Gemmenich receives on average 858 mm of precipitation per year, spread over about 161 rainy days.
Is it sunny in Gemmenich?
Gemmenich gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gemmenich?
The heaviest 24-hour snowfall measured in Gemmenich between 1940 and 2025 was 1 February 1953, with 15.2 cm.
Are there tropical nights in Gemmenich?
Yes: Gemmenich has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gemmenich?
In Gemmenich, between 1940 and 2025, the highest apparent temperature reached 40.0 °C on 6 July 1957, and the lowest was -25.9 °C on 1 January 1979.
These forecasts and records come from our own weather API. Developer documentation →
Compare Gemmenich with another city
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Nearby cities
The climate around Gemmenich