Rambouillet climate — normals and trends
Rambouillet (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.7 °C and it receives 668 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 (18.5 °C on average) and the coldest is January (3.3 °C). Rainfall peaks in May.
Rambouillet averages 45 frost days, 5 hot days (≥ 30 °C) and 128 rainy days per year.
Rambouillet 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 58 to 32 per year over the period.
The hottest day of the period reached 40.0 °C (on 25 July 2019) and the coldest -18.1 °C (on 29 January 1945).
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
RambouilletÎle-de-France Region
- coords
- 48.64°, 1.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.7°C
Average daily high
14.4°C
Average daily low
7.1°C
Annual rainfall
668mm
Sunshine / day
7.7h
Mean relative humidity
80%
Average peak wind
18.5km/h
Seasonal range
15.2°C
Frost days (< 0 °C)
45 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
14.2 cm
Average feels-like high
12.2 °C
Average feels-like low
4.4 °C
Average peak gust
37.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
40.0 °C
25 July 2019
Coldest day
-18.1 °C
29 January 1945
Wettest day
56 mm
15 August 1972
Windiest day
58.4 km/h
26 December 1999
Strongest gust
128.5 km/h
26 December 1999
Hottest feels-like
40.5 °C
30 July 2024
Coldest feels-like
-23.2 °C
29 January 1945
Snowiest day
18.5 cm
25 April 1941
Sunniest day
15.9 h
24 June 1943
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 | 6.4 °C | +0.7 °C | 134 mm | +82 mm |
| Feb | 7.7 °C | +0.5 °C | 50 mm | +0 mm |
| Mar | 13.2 °C | +2.5 °C | 35 mm | -19 mm |
| Apr | 18.2 °C | +4.3 °C | 32 mm | -23 mm |
| May | 20.5 °C | +3.0 °C | 45 mm | -21 mm |
| Jun | 26.2 °C | +5.4 °C | 42 mm | -18 mm |
| Jul | 25.0 °C | +1.8 °C | 83 mm | +31 mm |
| Aug | 26.1 °C | +3.1 °C | 32 mm | -20 mm |
| Sep | 20.0 °C | 0.0 °C | 63 mm | +12 mm |
| Oct | 15.9 °C | +0.7 °C | 53 mm | -5 mm |
| Nov | 11.1 °C | +1.5 °C | 45 mm | -14 mm |
| Dec | 8.8 °C | +2.2 °C | 41 mm | -18 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 Rambouillet?
Rambouillet has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.7 °C and it receives 668 mm of precipitation per year.
What is the hottest day ever recorded in Rambouillet?
The hottest day measured in Rambouillet between 1940 and 2025 was 25 July 2019, reaching 40.0 °C.
What is the coldest day in Rambouillet?
The coldest day measured in Rambouillet between 1940 and 2025 was 29 January 1945, at -18.1 °C.
Does it snow in Rambouillet?
Yes. Rambouillet gets on average 14.2 cm of snow per year and has around 45 frost days.
Has the climate of Rambouillet warmed?
Yes: Rambouillet warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rambouillet?
The wettest day measured in Rambouillet between 1940 and 2025 was 15 August 1972, with 56 mm of rain in 24 hours.
What was the windiest day in Rambouillet?
The windiest day measured in Rambouillet between 1940 and 2025 was 26 December 1999, with winds reaching 58.4 km/h.
What is the warmest month in Rambouillet?
The warmest month in Rambouillet is July (18.5 °C on average); the coldest is January (3.3 °C).
How much does it rain in Rambouillet?
Rambouillet receives on average 668 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Rambouillet?
Rambouillet gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rambouillet?
The heaviest 24-hour snowfall measured in Rambouillet between 1940 and 2025 was 25 April 1941, with 18.5 cm.
Are there tropical nights in Rambouillet?
Yes: Rambouillet has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rambouillet?
In Rambouillet, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 30 July 2024, and the lowest was -23.2 °C on 29 January 1945.
Compare Rambouillet with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rambouillet