Bertrix climate — normals and trends
Bertrix (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 975 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 (16.9 °C on average) and the coldest is January (0.8 °C). Rainfall peaks in December.
Bertrix averages 68 frost days, 2 hot days (≥ 30 °C) and 159 rainy days per year.
Bertrix has warmed by +1.8 °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 83 to 53 per year over the period.
The hottest day of the period reached 38.1 °C (on 25 July 2019) and the coldest -20.7 °C (on 23 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
BertrixWallonia
- coords
- 49.86°, 5.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
12.2°C
Average daily low
5.6°C
Annual rainfall
975mm
Sunshine / day
7.5h
Mean relative humidity
82%
Average peak wind
19.5km/h
Seasonal range
16.1°C
Frost days (< 0 °C)
68 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
159 d/yr
Annual snowfall
51.0 cm
Average feels-like high
9.6 °C
Average feels-like low
2.5 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
38.1 °C
25 July 2019
Coldest day
-20.7 °C
23 January 1940
Wettest day
55 mm
18 June 1966
Windiest day
57.4 km/h
24 November 1984
Strongest gust
124.6 km/h
24 November 1984
Hottest feels-like
38.2 °C
25 July 2019
Coldest feels-like
-25.7 °C
23 January 1940
Snowiest day
13.0 cm
25 December 1986
Sunniest day
15.5 h
29 June 2019
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 | 4.6 °C | +1.8 °C | 164 mm | +74 mm |
| Feb | 5.6 °C | +1.3 °C | 51 mm | -27 mm |
| Mar | 12.4 °C | +4.0 °C | 16 mm | -62 mm |
| Apr | 16.2 °C | +4.0 °C | 51 mm | -22 mm |
| May | 18.4 °C | +2.2 °C | 52 mm | -31 mm |
| Jun | 23.8 °C | +4.6 °C | 79 mm | -2 mm |
| Jul | 22.9 °C | +1.8 °C | 117 mm | +38 mm |
| Aug | 23.7 °C | +2.8 °C | 35 mm | -41 mm |
| Sep | 17.9 °C | +0.3 °C | 154 mm | +82 mm |
| Oct | 13.2 °C | +0.4 °C | 125 mm | +48 mm |
| Nov | 8.9 °C | +1.9 °C | 71 mm | -19 mm |
| Dec | 6.9 °C | +2.9 °C | 41 mm | -57 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 Bertrix?
Bertrix has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 975 mm of precipitation per year.
What is the hottest day ever recorded in Bertrix?
The hottest day measured in Bertrix between 1940 and 2025 was 25 July 2019, reaching 38.1 °C.
What is the coldest day in Bertrix?
The coldest day measured in Bertrix between 1940 and 2025 was 23 January 1940, at -20.7 °C.
Does it snow in Bertrix?
Yes. Bertrix gets on average 51.0 cm of snow per year and has around 68 frost days.
Has the climate of Bertrix warmed?
Yes: Bertrix warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bertrix?
The wettest day measured in Bertrix between 1940 and 2025 was 18 June 1966, with 55 mm of rain in 24 hours.
What was the windiest day in Bertrix?
The windiest day measured in Bertrix between 1940 and 2025 was 24 November 1984, with winds reaching 57.4 km/h.
What is the warmest month in Bertrix?
The warmest month in Bertrix is July (16.9 °C on average); the coldest is January (0.8 °C).
How much does it rain in Bertrix?
Bertrix receives on average 975 mm of precipitation per year, spread over about 159 rainy days.
Is it sunny in Bertrix?
Bertrix 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 Bertrix?
The heaviest 24-hour snowfall measured in Bertrix between 1940 and 2025 was 25 December 1986, with 13.0 cm.
Are there tropical nights in Bertrix?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bertrix.
What was the most extreme apparent temperature in Bertrix?
In Bertrix, between 1940 and 2025, the highest apparent temperature reached 38.2 °C on 25 July 2019, and the lowest was -25.7 °C on 23 January 1940.
Compare Bertrix with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bertrix