Gan climate — normals and trends
Gan (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 1,379 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 August (19.3 °C on average) and the coldest is January (5.2 °C). Rainfall peaks in May.
Gan averages 30 frost days, 7 hot days (≥ 30 °C) and 169 rainy days per year.
Gan has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 42 to 18 per year over the period.
The hottest day of the period reached 38.6 °C (on 11 August 2025) and the coldest -15.5 °C (on 2 February 1954).
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
GanNew Aquitaine
- coords
- 43.23°, -0.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
16.6°C
Average daily low
8.2°C
Annual rainfall
1,379mm
Sunshine / day
9.0h
Mean relative humidity
77%
Average peak wind
10.2km/h
Seasonal range
14.1°C
Frost days (< 0 °C)
30 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
169 d/yr
Annual snowfall
27.9 cm
Average feels-like high
15.8 °C
Average feels-like low
6.6 °C
Average peak gust
30.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
13.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.58 · 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
38.6 °C
11 August 2025
Coldest day
-15.5 °C
2 February 1954
Wettest day
121 mm
10 October 2010
Windiest day
41.8 km/h
2 December 1976
Strongest gust
130.7 km/h
27 December 1999
Hottest feels-like
41.1 °C
18 June 2022
Coldest feels-like
-19.7 °C
2 February 1954
Snowiest day
21.3 cm
4 January 1997
Sunniest day
14.6 h
20 June 2025
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 | 12.2 °C | +3.0 °C | 124 mm | +12 mm |
| Feb | 14.2 °C | +3.7 °C | 63 mm | -36 mm |
| Mar | 13.7 °C | +0.3 °C | 126 mm | +19 mm |
| Apr | 17.9 °C | +2.7 °C | 122 mm | -13 mm |
| May | 19.8 °C | +1.4 °C | 145 mm | -7 mm |
| Jun | 26.2 °C | +4.5 °C | 109 mm | -15 mm |
| Jul | 24.6 °C | +0.8 °C | 48 mm | -43 mm |
| Aug | 28.1 °C | +4.1 °C | 109 mm | +8 mm |
| Sep | 22.3 °C | +0.4 °C | 82 mm | -24 mm |
| Oct | 20.3 °C | +2.2 °C | 44 mm | -72 mm |
| Nov | 14.5 °C | +1.8 °C | 143 mm | +22 mm |
| Dec | 11.8 °C | +2.0 °C | 81 mm | -36 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 Gan?
Gan has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,379 mm of precipitation per year.
What is the hottest day ever recorded in Gan?
The hottest day measured in Gan between 1940 and 2025 was 11 August 2025, reaching 38.6 °C.
What is the coldest day in Gan?
The coldest day measured in Gan between 1940 and 2025 was 2 February 1954, at -15.5 °C.
Does it snow in Gan?
Yes. Gan gets on average 27.9 cm of snow per year and has around 30 frost days.
Has the climate of Gan warmed?
Yes: Gan warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gan?
The wettest day measured in Gan between 1940 and 2025 was 10 October 2010, with 121 mm of rain in 24 hours.
What was the windiest day in Gan?
The windiest day measured in Gan between 1940 and 2025 was 2 December 1976, with winds reaching 41.8 km/h.
What is the warmest month in Gan?
The warmest month in Gan is August (19.3 °C on average); the coldest is January (5.2 °C).
How much does it rain in Gan?
Gan receives on average 1,379 mm of precipitation per year, spread over about 169 rainy days.
Is it sunny in Gan?
Gan 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 Gan?
The heaviest 24-hour snowfall measured in Gan between 1940 and 2025 was 4 January 1997, with 21.3 cm.
Are there tropical nights in Gan?
Yes: Gan has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gan?
In Gan, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 18 June 2022, and the lowest was -19.7 °C on 2 February 1954.
Compare Gan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gan