La Rousse climate — normals and trends
La Rousse (Monaco) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 14.3 °C and it receives 781 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 (22.1 °C on average) and the coldest is January (7.8 °C). Rainfall peaks in November.
La Rousse averages 1 frost days, 0 hot days (≥ 30 °C) and 100 rainy days per year.
La Rousse 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 2 to 0 per year over the period.
The hottest day of the period reached 30.4 °C (on 14 August 2025) and the coldest -6.4 °C (on 14 February 1940).
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
La RousseMunicipality of Monaco
- coords
- 43.75°, 7.43°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.3°C
Average daily high
15.8°C
Average daily low
13.0°C
Annual rainfall
781mm
Sunshine / day
10.3h
Mean relative humidity
75%
Average peak wind
17.1km/h
Seasonal range
14.3°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
100 d/yr
Annual snowfall
24.2 cm
Average feels-like high
15.0 °C
Average feels-like low
11.4 °C
Average peak gust
28.1 km/h
Tropical nights (≥ 20 °C)
48 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
30.4 °C
14 August 2025
Coldest day
-6.4 °C
14 February 1940
Wettest day
130 mm
20 October 1959
Windiest day
51.7 km/h
24 November 1942
Strongest gust
102.6 km/h
29 October 2018
Hottest feels-like
35.3 °C
23 August 2023
Coldest feels-like
-12.1 °C
2 February 1956
Snowiest day
10.9 cm
1 March 2018
Sunniest day
15.0 h
1 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 | 11.5 °C | +2.2 °C | 136 mm | +66 mm |
| Feb | 11.2 °C | +1.6 °C | 26 mm | -43 mm |
| Mar | 12.6 °C | +1.3 °C | 116 mm | +40 mm |
| Apr | 14.9 °C | +1.5 °C | 105 mm | +32 mm |
| May | 17.9 °C | +1.1 °C | 49 mm | -8 mm |
| Jun | 24.3 °C | +3.8 °C | 9 mm | -31 mm |
| Jul | 25.1 °C | +1.9 °C | 8 mm | -10 mm |
| Aug | 25.5 °C | +2.1 °C | 21 mm | -8 mm |
| Sep | 21.4 °C | +0.7 °C | 33 mm | -21 mm |
| Oct | 18.4 °C | +1.2 °C | 64 mm | -33 mm |
| Nov | 14.2 °C | +1.0 °C | 73 mm | -39 mm |
| Dec | 12.4 °C | +1.9 °C | 101 mm | +15 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 La Rousse?
La Rousse has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 14.3 °C and it receives 781 mm of precipitation per year.
What is the hottest day ever recorded in La Rousse?
The hottest day measured in La Rousse between 1940 and 2025 was 14 August 2025, reaching 30.4 °C.
What is the coldest day in La Rousse?
The coldest day measured in La Rousse between 1940 and 2025 was 14 February 1940, at -6.4 °C.
Does it snow in La Rousse?
Yes. La Rousse gets on average 24.2 cm of snow per year and has around 1 frost days.
Has the climate of La Rousse warmed?
Yes: La Rousse warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in La Rousse?
The wettest day measured in La Rousse between 1940 and 2025 was 20 October 1959, with 130 mm of rain in 24 hours.
What was the windiest day in La Rousse?
The windiest day measured in La Rousse between 1940 and 2025 was 24 November 1942, with winds reaching 51.7 km/h.
What is the warmest month in La Rousse?
The warmest month in La Rousse is August (22.1 °C on average); the coldest is January (7.8 °C).
How much does it rain in La Rousse?
La Rousse receives on average 781 mm of precipitation per year, spread over about 100 rainy days.
Is it sunny in La Rousse?
La Rousse 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 La Rousse?
The heaviest 24-hour snowfall measured in La Rousse between 1940 and 2025 was 1 March 2018, with 10.9 cm.
Are there tropical nights in La Rousse?
Yes: La Rousse has on average 48 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in La Rousse?
In La Rousse, between 1940 and 2025, the highest apparent temperature reached 35.3 °C on 23 August 2023, and the lowest was -12.1 °C on 2 February 1956.
Compare La Rousse with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around La Rousse