Roussillon climate — normals and trends
Roussillon (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 1,008 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 (19.9 °C on average) and the coldest is January (2.1 °C). Rainfall peaks in October.
Roussillon averages 57 frost days, 9 hot days (≥ 30 °C) and 137 rainy days per year.
Roussillon has warmed by +2.5 °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 76 to 38 per year over the period.
The hottest day of the period reached 37.9 °C (on 24 July 2019) and the coldest -20.6 °C (on 5 February 1963).
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
RoussillonRhône-Alpes
- coords
- 45.37°, 4.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.8°C
Average daily high
15.0°C
Average daily low
6.9°C
Annual rainfall
1,008mm
Sunshine / day
9.2h
Mean relative humidity
75%
Average peak wind
16.3km/h
Seasonal range
17.8°C
Frost days (< 0 °C)
57 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
39.9 cm
Average feels-like high
12.9 °C
Average feels-like low
4.5 °C
Average peak gust
39.1 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
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
37.9 °C
24 July 2019
Coldest day
-20.6 °C
5 February 1963
Wettest day
81 mm
21 August 1954
Windiest day
45.8 km/h
25 October 2010
Strongest gust
106.2 km/h
20 December 2019
Hottest feels-like
40.1 °C
27 June 2019
Coldest feels-like
-25.2 °C
5 February 1963
Snowiest day
29.4 cm
14 November 2019
Sunniest day
15.0 h
2 June 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 | 7.5 °C | +2.4 °C | 120 mm | +55 mm |
| Feb | 9.1 °C | +2.1 °C | 68 mm | +4 mm |
| Mar | 11.9 °C | +0.9 °C | 107 mm | +34 mm |
| Apr | 17.2 °C | +2.9 °C | 88 mm | +3 mm |
| May | 20.0 °C | +1.7 °C | 80 mm | -22 mm |
| Jun | 28.2 °C | +5.8 °C | 100 mm | +15 mm |
| Jul | 26.5 °C | +1.4 °C | 56 mm | -21 mm |
| Aug | 28.6 °C | +3.9 °C | 65 mm | -23 mm |
| Sep | 20.5 °C | -0.3 °C | 178 mm | +79 mm |
| Oct | 15.5 °C | 0.0 °C | 91 mm | -13 mm |
| Nov | 10.8 °C | +1.4 °C | 116 mm | +21 mm |
| Dec | 8.2 °C | +2.3 °C | 61 mm | -11 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 Roussillon?
Roussillon has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 1,008 mm of precipitation per year.
What is the hottest day ever recorded in Roussillon?
The hottest day measured in Roussillon between 1940 and 2025 was 24 July 2019, reaching 37.9 °C.
What is the coldest day in Roussillon?
The coldest day measured in Roussillon between 1940 and 2025 was 5 February 1963, at -20.6 °C.
Does it snow in Roussillon?
Yes. Roussillon gets on average 39.9 cm of snow per year and has around 57 frost days.
Has the climate of Roussillon warmed?
Yes: Roussillon warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Roussillon?
The wettest day measured in Roussillon between 1940 and 2025 was 21 August 1954, with 81 mm of rain in 24 hours.
What was the windiest day in Roussillon?
The windiest day measured in Roussillon between 1940 and 2025 was 25 October 2010, with winds reaching 45.8 km/h.
What is the warmest month in Roussillon?
The warmest month in Roussillon is July (19.9 °C on average); the coldest is January (2.1 °C).
How much does it rain in Roussillon?
Roussillon receives on average 1,008 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Roussillon?
Roussillon gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Roussillon?
The heaviest 24-hour snowfall measured in Roussillon between 1940 and 2025 was 14 November 2019, with 29.4 cm.
Are there tropical nights in Roussillon?
Yes: Roussillon has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Roussillon?
In Roussillon, between 1940 and 2025, the highest apparent temperature reached 40.1 °C on 27 June 2019, and the lowest was -25.2 °C on 5 February 1963.
Compare Roussillon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Roussillon