Bex climate — normals and trends
Bex (Switzerland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.6 °C and it receives 1,777 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 (13.6 °C on average) and the coldest is January (-6.8 °C). Rainfall peaks in July.
Bex averages 190 frost days, 0 hot days (≥ 30 °C) and 185 rainy days per year.
Bex has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 216 to 164 per year over the period.
The hottest day of the period reached 30.7 °C (on 7 July 2015) and the coldest -32.2 °C (on 7 January 1985).
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
BexCanton of Vaud
- coords
- 46.25°, 7.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.6°C
Average daily high
8.4°C
Average daily low
-1.1°C
Annual rainfall
1,777mm
Sunshine / day
9.0h
Mean relative humidity
78%
Average peak wind
6.8km/h
Seasonal range
20.4°C
Frost days (< 0 °C)
190 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
185 d/yr
Annual snowfall
455.4 cm
Average feels-like high
6.6 °C
Average feels-like low
-4.1 °C
Average peak gust
35.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.65 · 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
30.7 °C
7 July 2015
Coldest day
-32.2 °C
7 January 1985
Wettest day
79 mm
27 September 1942
Windiest day
14.8 km/h
27 February 1990
Strongest gust
140.8 km/h
27 February 1990
Hottest feels-like
31.8 °C
11 July 2023
Coldest feels-like
-37.1 °C
7 January 1985
Snowiest day
37.8 cm
14 February 1990
Sunniest day
15.0 h
20 May 1940
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 | 1.4 °C | +4.0 °C | 176 mm | +48 mm |
| Feb | 3.6 °C | +3.3 °C | 54 mm | -68 mm |
| Mar | 7.7 °C | +3.7 °C | 68 mm | -55 mm |
| Apr | 12.6 °C | +5.3 °C | 152 mm | +27 mm |
| May | 13.8 °C | +1.7 °C | 217 mm | +49 mm |
| Jun | 22.2 °C | +5.9 °C | 158 mm | -38 mm |
| Jul | 18.9 °C | +0.3 °C | 227 mm | +30 mm |
| Aug | 20.9 °C | +2.7 °C | 140 mm | -52 mm |
| Sep | 15.2 °C | 0.0 °C | 248 mm | +109 mm |
| Oct | 10.4 °C | -0.1 °C | 177 mm | +62 mm |
| Nov | 5.4 °C | +2.3 °C | 147 mm | +13 mm |
| Dec | 3.3 °C | +5.4 °C | 31 mm | -111 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 Bex?
Bex has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.6 °C and it receives 1,777 mm of precipitation per year.
What is the hottest day ever recorded in Bex?
The hottest day measured in Bex between 1940 and 2025 was 7 July 2015, reaching 30.7 °C.
What is the coldest day in Bex?
The coldest day measured in Bex between 1940 and 2025 was 7 January 1985, at -32.2 °C.
Does it snow in Bex?
Yes. Bex gets on average 455.4 cm of snow per year and has around 190 frost days.
Has the climate of Bex warmed?
Yes: Bex warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bex?
The wettest day measured in Bex between 1940 and 2025 was 27 September 1942, with 79 mm of rain in 24 hours.
What was the windiest day in Bex?
The windiest day measured in Bex between 1940 and 2025 was 27 February 1990, with winds reaching 14.8 km/h.
What is the warmest month in Bex?
The warmest month in Bex is July (13.6 °C on average); the coldest is January (-6.8 °C).
How much does it rain in Bex?
Bex receives on average 1,777 mm of precipitation per year, spread over about 185 rainy days.
Is it sunny in Bex?
Bex gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bex?
The heaviest 24-hour snowfall measured in Bex between 1940 and 2025 was 14 February 1990, with 37.8 cm.
Are there tropical nights in Bex?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bex.
What was the most extreme apparent temperature in Bex?
In Bex, between 1940 and 2025, the highest apparent temperature reached 31.8 °C on 11 July 2023, and the lowest was -37.1 °C on 7 January 1985.
Compare Bex with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bex