Biganos climate — normals and trends
Biganos (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 13.7 °C and it receives 784 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 (20.9 °C on average) and the coldest is January (6.8 °C). Rainfall peaks in November.
Biganos averages 10 frost days, 10 hot days (≥ 30 °C) and 129 rainy days per year.
Biganos has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 14 to 6 per year over the period.
The hottest day of the period reached 38.9 °C (on 18 July 2022) and the coldest -11.1 °C (on 16 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
BiganosNew Aquitaine
- coords
- 44.64°, -0.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.7°C
Average daily high
17.1°C
Average daily low
10.7°C
Annual rainfall
784mm
Sunshine / day
9.3h
Mean relative humidity
78%
Average peak wind
16.4km/h
Seasonal range
14.1°C
Frost days (< 0 °C)
10 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
1.6 cm
Average feels-like high
16.0 °C
Average feels-like low
9.0 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
13.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
38.9 °C
18 July 2022
Coldest day
-11.1 °C
16 January 1985
Wettest day
55 mm
2 September 1947
Windiest day
68.8 km/h
27 December 1999
Strongest gust
145.8 km/h
27 December 1999
Hottest feels-like
42.8 °C
23 August 2023
Coldest feels-like
-15.7 °C
16 January 1985
Snowiest day
6.3 cm
13 January 1987
Sunniest day
15.0 h
21 June 2017
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 | 10.8 °C | +1.4 °C | 122 mm | +49 mm |
| Feb | 13.1 °C | +2.5 °C | 71 mm | +10 mm |
| Mar | 14.5 °C | +1.0 °C | 42 mm | -16 mm |
| Apr | 18.3 °C | +2.4 °C | 76 mm | +13 mm |
| May | 21.1 °C | +1.9 °C | 32 mm | -39 mm |
| Jun | 26.9 °C | +4.3 °C | 32 mm | -30 mm |
| Jul | 25.8 °C | +1.0 °C | 24 mm | -22 mm |
| Aug | 27.9 °C | +3.1 °C | 48 mm | -8 mm |
| Sep | 22.0 °C | -0.6 °C | 58 mm | -6 mm |
| Oct | 19.6 °C | +1.1 °C | 86 mm | +15 mm |
| Nov | 14.7 °C | +1.5 °C | 92 mm | +11 mm |
| Dec | 11.6 °C | +1.3 °C | 75 mm | -4 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 Biganos?
Biganos has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 13.7 °C and it receives 784 mm of precipitation per year.
What is the hottest day ever recorded in Biganos?
The hottest day measured in Biganos between 1940 and 2025 was 18 July 2022, reaching 38.9 °C.
What is the coldest day in Biganos?
The coldest day measured in Biganos between 1940 and 2025 was 16 January 1985, at -11.1 °C.
Does it snow in Biganos?
Yes. Biganos gets on average 1.6 cm of snow per year and has around 10 frost days.
Has the climate of Biganos warmed?
Yes: Biganos warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Biganos?
The wettest day measured in Biganos between 1940 and 2025 was 2 September 1947, with 55 mm of rain in 24 hours.
What was the windiest day in Biganos?
The windiest day measured in Biganos between 1940 and 2025 was 27 December 1999, with winds reaching 68.8 km/h.
What is the warmest month in Biganos?
The warmest month in Biganos is July (20.9 °C on average); the coldest is January (6.8 °C).
How much does it rain in Biganos?
Biganos receives on average 784 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Biganos?
Biganos gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Biganos?
The heaviest 24-hour snowfall measured in Biganos between 1940 and 2025 was 13 January 1987, with 6.3 cm.
Are there tropical nights in Biganos?
Yes: Biganos has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Biganos?
In Biganos, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 23 August 2023, and the lowest was -15.7 °C on 16 January 1985.
Compare Biganos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Biganos