Soustons climate — normals and trends
Soustons (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 14.1 °C and it receives 1,039 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 (20.8 °C on average) and the coldest is January (7.9 °C). Rainfall peaks in November.
Soustons averages 8 frost days, 6 hot days (≥ 30 °C) and 143 rainy days per year.
Soustons has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 12 to 4 per year over the period.
The hottest day of the period reached 38.7 °C (on 18 July 2022) and the coldest -12.4 °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
SoustonsNew Aquitaine
- coords
- 43.75°, -1.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.1°C
Average daily high
17.5°C
Average daily low
11.1°C
Annual rainfall
1,039mm
Sunshine / day
9.5h
Mean relative humidity
78%
Average peak wind
18.8km/h
Seasonal range
12.9°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
1.3 cm
Average feels-like high
16.5 °C
Average feels-like low
9.3 °C
Average peak gust
34.5 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.52 · 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
38.7 °C
18 July 2022
Coldest day
-12.4 °C
16 January 1985
Wettest day
67 mm
14 September 1969
Windiest day
74.0 km/h
24 January 2009
Strongest gust
153.7 km/h
24 January 2009
Hottest feels-like
42.3 °C
18 June 2022
Coldest feels-like
-17.2 °C
16 January 1985
Snowiest day
6.1 cm
24 February 1947
Sunniest day
14.8 h
18 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 12.9 °C | +2.2 °C | 139 mm | +33 mm |
| Feb | 14.6 °C | +2.8 °C | 51 mm | -42 mm |
| Mar | 15.0 °C | +0.8 °C | 64 mm | -19 mm |
| Apr | 18.1 °C | +2.1 °C | 93 mm | +8 mm |
| May | 20.1 °C | +1.2 °C | 46 mm | -37 mm |
| Jun | 25.4 °C | +3.5 °C | 51 mm | -14 mm |
| Jul | 25.1 °C | +1.0 °C | 40 mm | -10 mm |
| Aug | 26.8 °C | +2.3 °C | 67 mm | +4 mm |
| Sep | 23.0 °C | +0.2 °C | 62 mm | -13 mm |
| Oct | 21.0 °C | +1.7 °C | 53 mm | -42 mm |
| Nov | 16.0 °C | +1.8 °C | 156 mm | +32 mm |
| Dec | 13.1 °C | +1.7 °C | 94 mm | -24 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 Soustons?
Soustons has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 14.1 °C and it receives 1,039 mm of precipitation per year.
What is the hottest day ever recorded in Soustons?
The hottest day measured in Soustons between 1940 and 2025 was 18 July 2022, reaching 38.7 °C.
What is the coldest day in Soustons?
The coldest day measured in Soustons between 1940 and 2025 was 16 January 1985, at -12.4 °C.
Does it snow in Soustons?
Yes. Soustons gets on average 1.3 cm of snow per year and has around 8 frost days.
Has the climate of Soustons warmed?
Yes: Soustons warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Soustons?
The wettest day measured in Soustons between 1940 and 2025 was 14 September 1969, with 67 mm of rain in 24 hours.
What was the windiest day in Soustons?
The windiest day measured in Soustons between 1940 and 2025 was 24 January 2009, with winds reaching 74.0 km/h.
What is the warmest month in Soustons?
The warmest month in Soustons is August (20.8 °C on average); the coldest is January (7.9 °C).
How much does it rain in Soustons?
Soustons receives on average 1,039 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Soustons?
Soustons gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Soustons?
The heaviest 24-hour snowfall measured in Soustons between 1940 and 2025 was 24 February 1947, with 6.1 cm.
Are there tropical nights in Soustons?
Yes: Soustons has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Soustons?
In Soustons, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 18 June 2022, and the lowest was -17.2 °C on 16 January 1985.
Compare Soustons with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Soustons