Athis climate — normals and trends
Athis has a temperate oceanic climate, averaging 10.0 °C annually with 804 mm of rain per year.
Climate normals · ERA5
AthisWallonia
- coords
- 50.36°, 3.77°
- 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
10.0°C
Average daily high
13.4°C
Average daily low
6.5°C
Annual rainfall
804mm
Sunshine / day
7.5h
Mean relative humidity
81%
Average peak wind
20.0km/h
Seasonal range
15.0°C
Frost days (< 0 °C)
52 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
20.5 cm
Average feels-like high
11.0 °C
Average feels-like low
3.5 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+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).
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
-19.2 °C
1 January 1979
Wettest day
57 mm
22 June 2023
Windiest day
57.7 km/h
24 November 1984
Strongest gust
126.4 km/h
24 November 1984
Hottest feels-like
40.7 °C
26 June 2026
Coldest feels-like
-24.4 °C
8 January 1985
Snowiest day
12.3 cm
5 March 2012
Sunniest day
15.9 h
26 June 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 | 5.0 °C | +0.2 °C | 174 mm | +103 mm |
| Feb | 6.9 °C | +0.8 °C | 52 mm | -9 mm |
| Mar | 12.9 °C | +3.3 °C | 16 mm | -49 mm |
| Apr | 17.5 °C | +4.4 °C | 22 mm | -37 mm |
| May | 19.3 °C | +2.4 °C | 63 mm | -10 mm |
| Jun | 24.1 °C | +4.3 °C | 61 mm | -10 mm |
| Jul | 24.2 °C | +2.4 °C | 74 mm | +4 mm |
| Aug | 24.6 °C | +3.0 °C | 25 mm | -43 mm |
| Sep | 19.6 °C | +1.0 °C | 53 mm | -6 mm |
| Oct | 14.5 °C | +0.4 °C | 81 mm | +17 mm |
| Nov | 10.0 °C | +1.3 °C | 75 mm | +4 mm |
| Dec | 8.1 °C | +2.4 °C | 32 mm | -41 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.
Athis (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 804 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 (2.6 °C). Rainfall peaks in May.
Athis averages 52 frost days, 3 hot days (≥ 30 °C) and 148 rainy days per year.
Athis 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 67 to 37 per year over the period.
The hottest day of the period reached 39.7 °C (on 25 July 2019) and the coldest -19.2 °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 Athis?
Athis has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 804 mm of precipitation per year.
What is the hottest day ever recorded in Athis?
The hottest day measured in Athis between 1940 and 2025 was 25 July 2019, reaching 39.7 °C.
What is the coldest day in Athis?
The coldest day measured in Athis between 1940 and 2025 was 1 January 1979, at -19.2 °C.
Does it snow in Athis?
Yes. Athis gets on average 20.5 cm of snow per year and has around 52 frost days.
Has the climate of Athis warmed?
Yes: Athis warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Athis?
The wettest day measured in Athis between 1940 and 2025 was 22 June 2023, with 57 mm of rain in 24 hours.
What was the windiest day in Athis?
The windiest day measured in Athis between 1940 and 2025 was 24 November 1984, with winds reaching 57.7 km/h.
What is the warmest month in Athis?
The warmest month in Athis is July (17.6 °C on average); the coldest is January (2.6 °C).
How much does it rain in Athis?
Athis receives on average 804 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Athis?
Athis 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 Athis?
The heaviest 24-hour snowfall measured in Athis between 1940 and 2025 was 5 March 2012, with 12.3 cm.
Are there tropical nights in Athis?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Athis.
What was the most extreme apparent temperature in Athis?
In Athis, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 26 June 2026, and the lowest was -24.4 °C on 8 January 1985.
These forecasts and records come from our own weather API. Developer documentation →
Compare Athis with another city
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Nearby cities
The climate around Athis