Belley climate — normals and trends
Belley (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.9 °C and it receives 1,415 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 (19.4 °C on average) and the coldest is January (0.4 °C). Rainfall peaks in November.
Belley averages 81 frost days, 6 hot days (≥ 30 °C) and 157 rainy days per year.
Belley has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 112 to 50 per year over the period.
The hottest day of the period reached 37.4 °C (on 12 August 2025) and the coldest -24.5 °C (on 12 January 1945).
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
BelleyRhône-Alpes
- coords
- 45.76°, 5.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.9°C
Average daily high
14.2°C
Average daily low
5.8°C
Annual rainfall
1,415mm
Sunshine / day
8.8h
Mean relative humidity
76%
Average peak wind
8.9km/h
Seasonal range
19.0°C
Frost days (< 0 °C)
81 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
157 d/yr
Annual snowfall
106.4 cm
Average feels-like high
12.9 °C
Average feels-like low
3.9 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.70 · 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
37.4 °C
12 August 2025
Coldest day
-24.5 °C
12 January 1945
Wettest day
79 mm
14 February 1990
Windiest day
27.1 km/h
25 October 2010
Strongest gust
116.3 km/h
28 December 1999
Hottest feels-like
40.2 °C
27 June 2019
Coldest feels-like
-28.9 °C
12 January 1945
Snowiest day
30.2 cm
17 April 2005
Sunniest day
15.0 h
26 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 | 7.2 °C | +3.4 °C | 210 mm | +91 mm |
| Feb | 9.0 °C | +2.9 °C | 47 mm | -65 mm |
| Mar | 13.0 °C | +2.5 °C | 81 mm | -31 mm |
| Apr | 17.8 °C | +3.6 °C | 126 mm | +14 mm |
| May | 19.7 °C | +1.6 °C | 136 mm | +3 mm |
| Jun | 27.8 °C | +6.1 °C | 107 mm | -15 mm |
| Jul | 25.8 °C | +1.6 °C | 86 mm | -21 mm |
| Aug | 27.8 °C | +4.1 °C | 83 mm | -33 mm |
| Sep | 19.8 °C | -0.3 °C | 162 mm | +55 mm |
| Oct | 14.9 °C | -0.2 °C | 209 mm | +98 mm |
| Nov | 10.3 °C | +1.8 °C | 164 mm | +30 mm |
| Dec | 7.7 °C | +3.2 °C | 39 mm | -94 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 Belley?
Belley has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.9 °C and it receives 1,415 mm of precipitation per year.
What is the hottest day ever recorded in Belley?
The hottest day measured in Belley between 1940 and 2025 was 12 August 2025, reaching 37.4 °C.
What is the coldest day in Belley?
The coldest day measured in Belley between 1940 and 2025 was 12 January 1945, at -24.5 °C.
Does it snow in Belley?
Yes. Belley gets on average 106.4 cm of snow per year and has around 81 frost days.
Has the climate of Belley warmed?
Yes: Belley warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Belley?
The wettest day measured in Belley between 1940 and 2025 was 14 February 1990, with 79 mm of rain in 24 hours.
What was the windiest day in Belley?
The windiest day measured in Belley between 1940 and 2025 was 25 October 2010, with winds reaching 27.1 km/h.
What is the warmest month in Belley?
The warmest month in Belley is July (19.4 °C on average); the coldest is January (0.4 °C).
How much does it rain in Belley?
Belley receives on average 1,415 mm of precipitation per year, spread over about 157 rainy days.
Is it sunny in Belley?
Belley gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Belley?
The heaviest 24-hour snowfall measured in Belley between 1940 and 2025 was 17 April 2005, with 30.2 cm.
Are there tropical nights in Belley?
Yes: Belley has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Belley?
In Belley, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 27 June 2019, and the lowest was -28.9 °C on 12 January 1945.
Compare Belley with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Belley