Photo: Lionel Allorge · CC BY-SA 3.0Rambouillet has cooler summers than 75% of mainland French towns
The coldest hours of a January night bottom out at 1.3°C on average. About 54 nights a year bring a frost, more than in 74% of mainland French towns. Expect the heaviest rain in December and the lightest in March. The heating season runs November to March: each of those months averages under 10°C.
These are the figures of Météo-France’s Saint-Léger station, 9.4 km north-west.
A year in Rambouillet at a glance
Each month’s typical high and low in °C, at the Saint-Léger station.
What a year in Rambouillet feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Léger.
About 706 mm of rain a year
December is the wettest month and March the driest. About 19 days a year bring 10 mm or more. 3rd wettest of 95 towns of 2,500+ in Yvelines.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Trappes
A frosty town: 54 frosts and 46 days of 25°C a year
On about 54 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 46 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Léger: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Saint-Léger
Saint-Léger is 9.4 km north-west of Rambouillet. Every figure on this page is the station’s, not a measurement in Rambouillet itself.
| Station (Météo-France number) | Saint-Léger (78562001) |
| Distance from the town | 9.4 km north-west |
| Station altitude | 176 m |
| Town altitude (its center) | 158 m |
| Period | 1992–2020 (the station’s own record) |
| Sunshine measured at | Trappes, 19 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Rambouillet compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Yvelines.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Rambouillet | Saint-Léger | 24.8°C | 1.3°C | 706 mm |
| Le Perray-en-Yvelines 5.2 km | same station | 24.8°C about the same | 1.3°C about the same | 706 mm |
| Les Essarts-le-Roi 9.1 km | Choisel | 25.1°C about the same | 1.3°C about the same | 709 mm |
| Saint-Arnoult-en-Yvelines 11 km | Dourdan | 25.7°C 0.9°C warmer | 1.5°C about the same | 654 mm |
| Épernon 12 km | Houx | 25.7°C 0.9°C warmer | 1.2°C about the same | 622 mm |
| Coignières 13 km | Trappes | 24.6°C about the same | 1.9°C 0.6°C milder | 686 mm |
| Le Mesnil-Saint-Denis 14 km | Trappes | 24.6°C about the same | 1.9°C 0.6°C milder | 686 mm |
Rambouillet weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Léger station; sunshine at Trappes.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.8°C | 1.3°C | 4.0°C | 58 mm | 57 |
| February | 8.1°C | 1.2°C | 4.6°C | 50 mm | 81 |
| March | 12.1°C | 2.8°C | 7.4°C | 50 mm | 134 |
| April | 15.7°C | 4.7°C | 10.2°C | 51 mm | 176 |
| May | 19.0°C | 8.0°C | 13.5°C | 74 mm | 202 |
| June | 22.5°C | 11.0°C | 16.8°C | 57 mm | 210 |
| July | 24.8°C | 12.7°C | 18.8°C | 54 mm | 222 |
| August | 24.8°C | 12.6°C | 18.7°C | 60 mm | 216 |
| September | 20.9°C | 9.9°C | 15.4°C | 51 mm | 177 |
| October | 15.8°C | 7.6°C | 11.7°C | 64 mm | 117 |
| November | 10.3°C | 4.0°C | 7.1°C | 64 mm | 68 |
| December | 6.9°C | 1.7°C | 4.3°C | 75 mm | 55 |
| Year | 15.6°C | 6.5°C | 11.0°C | 706 mm | 1,714 |
Where Rambouillet’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Léger, 9.4 km away: statistics for 1991–2020 (the station’s own years, 1992–2020, where its record is shorter).
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Trappes, 19 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Yvelines.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Rambouillet’s climate
How warm does Rambouillet get in summer?
July is the warmest month, with average highs of 24.8°C. About 46 days a year reach 25°C, fewer than 74% of mainland French towns, and about 10 reach 30°C.
How cold does Rambouillet get in winter?
February nights average 1.2°C. The air drops to 0°C or below on about 54 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Rambouillet get?
About 706 mm a year, less than 66% of mainland French towns. December is the wettest month (75 mm) and March the driest (50 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Trappes (19 km away), averages 1,714 hours of sunshine a year.
Are these figures for Rambouillet itself?
No: they are the normals of the Météo-France station matched to Rambouillet, Saint-Léger, 9.4 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station ST-LEGER_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Rambouillet →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.