Biot climate — normals and trends
Biot (France) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 12.3 °C and it receives 949 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 (21.1 °C on average) and the coldest is January (4.3 °C). Rainfall peaks in October.
Biot averages 32 frost days, 1 hot days (≥ 30 °C) and 119 rainy days per year.
Biot has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 57 to 7 per year over the period.
The hottest day of the period reached 34.3 °C (on 29 July 1983) and the coldest -15.6 °C (on 10 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
BiotProvence-Alpes-Côte d'Azur
- coords
- 43.63°, 7.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.3°C
Average daily high
16.4°C
Average daily low
8.3°C
Annual rainfall
949mm
Sunshine / day
10.3h
Mean relative humidity
75%
Average peak wind
10.0km/h
Seasonal range
16.8°C
Frost days (< 0 °C)
32 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
45.2 cm
Average feels-like high
15.8 °C
Average feels-like low
6.7 °C
Average peak gust
30.7 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.71 · 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
34.3 °C
29 July 1983
Coldest day
-15.6 °C
10 January 1985
Wettest day
112 mm
20 October 1959
Windiest day
36.8 km/h
28 December 1999
Strongest gust
109.1 km/h
28 December 1999
Hottest feels-like
38.0 °C
30 July 2024
Coldest feels-like
-20.3 °C
10 January 1985
Snowiest day
23.6 cm
22 February 1956
Sunniest day
15.0 h
28 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 | 11.5 °C | +3.1 °C | 124 mm | +54 mm |
| Feb | 12.0 °C | +2.5 °C | 35 mm | -40 mm |
| Mar | 13.7 °C | +1.6 °C | 149 mm | +65 mm |
| Apr | 16.6 °C | +1.8 °C | 115 mm | +25 mm |
| May | 19.7 °C | +1.2 °C | 86 mm | +3 mm |
| Jun | 27.4 °C | +5.2 °C | 18 mm | -47 mm |
| Jul | 27.7 °C | +2.5 °C | 21 mm | -14 mm |
| Aug | 28.3 °C | +3.2 °C | 36 mm | -13 mm |
| Sep | 23.8 °C | +1.9 °C | 60 mm | -17 mm |
| Oct | 19.0 °C | +1.5 °C | 87 mm | -32 mm |
| Nov | 14.0 °C | +1.4 °C | 92 mm | -26 mm |
| Dec | 12.2 °C | +2.7 °C | 112 mm | +25 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 Biot?
Biot has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 12.3 °C and it receives 949 mm of precipitation per year.
What is the hottest day ever recorded in Biot?
The hottest day measured in Biot between 1940 and 2025 was 29 July 1983, reaching 34.3 °C.
What is the coldest day in Biot?
The coldest day measured in Biot between 1940 and 2025 was 10 January 1985, at -15.6 °C.
Does it snow in Biot?
Yes. Biot gets on average 45.2 cm of snow per year and has around 32 frost days.
Has the climate of Biot warmed?
Yes: Biot warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Biot?
The wettest day measured in Biot between 1940 and 2025 was 20 October 1959, with 112 mm of rain in 24 hours.
What was the windiest day in Biot?
The windiest day measured in Biot between 1940 and 2025 was 28 December 1999, with winds reaching 36.8 km/h.
What is the warmest month in Biot?
The warmest month in Biot is July (21.1 °C on average); the coldest is January (4.3 °C).
How much does it rain in Biot?
Biot receives on average 949 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Biot?
Biot gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Biot?
The heaviest 24-hour snowfall measured in Biot between 1940 and 2025 was 22 February 1956, with 23.6 cm.
Are there tropical nights in Biot?
Yes: Biot has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Biot?
In Biot, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 30 July 2024, and the lowest was -20.3 °C on 10 January 1985.
Compare Biot with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Biot