Bagnes climate — normals and trends
Bagnes (Switzerland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is -0.2 °C and it receives 1,311 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 (10.2 °C on average) and the coldest is January (-10.6 °C). Rainfall peaks in December.
Bagnes averages 242 frost days, 0 hot days (≥ 30 °C) and 169 rainy days per year.
Bagnes 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 269 to 215 per year over the period.
The hottest day of the period reached 25.7 °C (on 19 August 2012) and the coldest -34.7 °C (on 8 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
BagnesValais
- coords
- 46.08°, 7.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-0.2°C
Average daily high
4.0°C
Average daily low
-4.5°C
Annual rainfall
1,311mm
Sunshine / day
9.1h
Mean relative humidity
76%
Average peak wind
6.8km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
242 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
169 d/yr
Annual snowfall
588.6 cm
Average feels-like high
1.4 °C
Average feels-like low
-7.9 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.63 · 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
25.7 °C
19 August 2012
Coldest day
-34.7 °C
8 January 1985
Wettest day
87 mm
14 February 1990
Windiest day
15.3 km/h
27 February 1990
Strongest gust
148.0 km/h
27 February 1990
Hottest feels-like
25.9 °C
29 June 2025
Coldest feels-like
-39.6 °C
8 January 1985
Snowiest day
60.5 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 | -4.3 °C | +3.2 °C | 149 mm | +35 mm |
| Feb | -1.2 °C | +3.4 °C | 32 mm | -74 mm |
| Mar | 1.6 °C | +2.3 °C | 46 mm | -57 mm |
| Apr | 6.2 °C | +3.5 °C | 139 mm | +37 mm |
| May | 9.0 °C | +2.0 °C | 146 mm | +33 mm |
| Jun | 18.4 °C | +6.8 °C | 95 mm | -14 mm |
| Jul | 15.0 °C | -0.1 °C | 142 mm | +27 mm |
| Aug | 17.4 °C | +2.5 °C | 99 mm | -13 mm |
| Sep | 11.7 °C | +0.1 °C | 142 mm | +48 mm |
| Oct | 6.6 °C | +0.4 °C | 147 mm | +48 mm |
| Nov | -0.3 °C | +1.5 °C | 102 mm | -19 mm |
| Dec | -2.6 °C | +4.3 °C | 34 mm | -91 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 Bagnes?
Bagnes has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is -0.2 °C and it receives 1,311 mm of precipitation per year.
What is the hottest day ever recorded in Bagnes?
The hottest day measured in Bagnes between 1940 and 2025 was 19 August 2012, reaching 25.7 °C.
What is the coldest day in Bagnes?
The coldest day measured in Bagnes between 1940 and 2025 was 8 January 1985, at -34.7 °C.
Does it snow in Bagnes?
Yes. Bagnes gets on average 588.6 cm of snow per year and has around 242 frost days.
Has the climate of Bagnes warmed?
Yes: Bagnes warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bagnes?
The wettest day measured in Bagnes between 1940 and 2025 was 14 February 1990, with 87 mm of rain in 24 hours.
What was the windiest day in Bagnes?
The windiest day measured in Bagnes between 1940 and 2025 was 27 February 1990, with winds reaching 15.3 km/h.
What is the warmest month in Bagnes?
The warmest month in Bagnes is July (10.2 °C on average); the coldest is January (-10.6 °C).
How much does it rain in Bagnes?
Bagnes receives on average 1,311 mm of precipitation per year, spread over about 169 rainy days.
Is it sunny in Bagnes?
Bagnes gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bagnes?
The heaviest 24-hour snowfall measured in Bagnes between 1940 and 2025 was 14 February 1990, with 60.5 cm.
Are there tropical nights in Bagnes?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bagnes.
What was the most extreme apparent temperature in Bagnes?
In Bagnes, between 1940 and 2025, the highest apparent temperature reached 25.9 °C on 29 June 2025, and the lowest was -39.6 °C on 8 January 1985.
Compare Bagnes with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bagnes