Port-Saint-Louis-du-Rhône climate — normals and trends
Port-Saint-Louis-du-Rhône (France) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.4 °C and it receives 618 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 (24.2 °C on average) and the coldest is January (7.5 °C). Rainfall peaks in October.
Port-Saint-Louis-du-Rhône averages 6 frost days, 15 hot days (≥ 30 °C) and 76 rainy days per year.
Port-Saint-Louis-du-Rhône 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 11 to 1 per year over the period.
The hottest day of the period reached 37.8 °C (on 28 June 2019) and the coldest -9.0 °C (on 10 February 1956).
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
Port-Saint-Louis-du-RhôneProvence-Alpes-Côte d'Azur
- coords
- 43.39°, 4.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.4°C
Average daily high
18.9°C
Average daily low
12.2°C
Annual rainfall
618mm
Sunshine / day
10.3h
Mean relative humidity
67%
Average peak wind
25.1km/h
Seasonal range
16.7°C
Frost days (< 0 °C)
6 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
76 d/yr
Annual snowfall
3.5 cm
Average feels-like high
16.9 °C
Average feels-like low
9.3 °C
Average peak gust
43.1 km/h
Tropical nights (≥ 20 °C)
43 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
37.8 °C
28 June 2019
Coldest day
-9.0 °C
10 February 1956
Wettest day
96 mm
9 October 1970
Windiest day
64.7 km/h
29 October 1962
Strongest gust
111.2 km/h
8 November 1982
Hottest feels-like
40.3 °C
28 June 2019
Coldest feels-like
-19.0 °C
18 January 1940
Snowiest day
18.1 cm
8 January 2010
Sunniest day
14.9 h
21 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 | 12.9 °C | +2.3 °C | 55 mm | +2 mm |
| Feb | 13.5 °C | +1.7 °C | 87 mm | +41 mm |
| Mar | 15.7 °C | +1.1 °C | 70 mm | +21 mm |
| Apr | 19.6 °C | +2.2 °C | 60 mm | +8 mm |
| May | 23.3 °C | +2.1 °C | 43 mm | -5 mm |
| Jun | 30.2 °C | +4.9 °C | 9 mm | -15 mm |
| Jul | 30.3 °C | +2.1 °C | 7 mm | -6 mm |
| Aug | 30.6 °C | +2.8 °C | 21 mm | -10 mm |
| Sep | 24.1 °C | -0.2 °C | 147 mm | +75 mm |
| Oct | 21.2 °C | +1.3 °C | 40 mm | -50 mm |
| Nov | 15.7 °C | +1.1 °C | 49 mm | -29 mm |
| Dec | 13.4 °C | +2.0 °C | 110 mm | +50 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 Port-Saint-Louis-du-Rhône?
Port-Saint-Louis-du-Rhône has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.4 °C and it receives 618 mm of precipitation per year.
What is the hottest day ever recorded in Port-Saint-Louis-du-Rhône?
The hottest day measured in Port-Saint-Louis-du-Rhône between 1940 and 2025 was 28 June 2019, reaching 37.8 °C.
What is the coldest day in Port-Saint-Louis-du-Rhône?
The coldest day measured in Port-Saint-Louis-du-Rhône between 1940 and 2025 was 10 February 1956, at -9.0 °C.
Does it snow in Port-Saint-Louis-du-Rhône?
Yes. Port-Saint-Louis-du-Rhône gets on average 3.5 cm of snow per year and has around 6 frost days.
Has the climate of Port-Saint-Louis-du-Rhône warmed?
Yes: Port-Saint-Louis-du-Rhône warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Port-Saint-Louis-du-Rhône?
The wettest day measured in Port-Saint-Louis-du-Rhône between 1940 and 2025 was 9 October 1970, with 96 mm of rain in 24 hours.
What was the windiest day in Port-Saint-Louis-du-Rhône?
The windiest day measured in Port-Saint-Louis-du-Rhône between 1940 and 2025 was 29 October 1962, with winds reaching 64.7 km/h.
What is the warmest month in Port-Saint-Louis-du-Rhône?
The warmest month in Port-Saint-Louis-du-Rhône is July (24.2 °C on average); the coldest is January (7.5 °C).
How much does it rain in Port-Saint-Louis-du-Rhône?
Port-Saint-Louis-du-Rhône receives on average 618 mm of precipitation per year, spread over about 76 rainy days.
Is it sunny in Port-Saint-Louis-du-Rhône?
Port-Saint-Louis-du-Rhône 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 Port-Saint-Louis-du-Rhône?
The heaviest 24-hour snowfall measured in Port-Saint-Louis-du-Rhône between 1940 and 2025 was 8 January 2010, with 18.1 cm.
Are there tropical nights in Port-Saint-Louis-du-Rhône?
Yes: Port-Saint-Louis-du-Rhône has on average 43 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Port-Saint-Louis-du-Rhône?
In Port-Saint-Louis-du-Rhône, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 28 June 2019, and the lowest was -19.0 °C on 18 January 1940.
Compare Port-Saint-Louis-du-Rhône with another city
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Nearby cities
The climate around Port-Saint-Louis-du-Rhône