Ice on the ground: Château-sur-Epte sees more frosts than 73% of mainland French towns
On a normal July day the thermometer tops out near 25.3°C. In July, afternoons here are cooler than in 67% of mainland French towns. The gap between a January night and a July afternoon is 24°C. Plan time outside from May to September, when highs sit at 20–25°C.
Figures from Météo-France’s Étrépagny station, 12 km north.
A year in Château-sur-Epte at a glance
Each month’s typical high and low in °C, at the Étrépagny station.
What a year in Château-sur-Epte feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Étrépagny.
About 774 mm of rain a year
December is the wettest month and April the driest. About 22 days a year bring 10 mm or more. 17th wettest of 39 towns of 2,500+ in Eure.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Evreux-Huest
A frosty town: 53 frosts and 52 days of 25°C a year
On about 53 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 52 days a year reach 25°C, and 14 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Étrépagny: 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 Étrépagny
Étrépagny is 12 km north of Château-sur-Epte. Every figure on this page is the station’s, not a measurement in Château-sur-Epte itself.
| Station (Météo-France number) | Étrépagny (27226001) |
| Distance from the town | 12 km north |
| Station altitude | 92 m |
| Town altitude (its center) | 41 m |
| Period | 1991–2020 |
| Sunshine measured at | Evreux-Huest, 38 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 Château-sur-Epte 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 Eure.
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 |
|---|---|---|---|---|
| Château-sur-Epte | Étrépagny | 25.3°C | 1.4°C | 774 mm |
| Vexin-sur-Epte 6.9 km | same station | 25.3°C about the same | 1.4°C about the same | 774 mm |
| Magny-en-Vexin 11 km | Pontoise - Aéro | 24.9°C about the same | 1.6°C about the same | 636 mm |
| Gisors 11 km | Jaméricourt | 25.1°C about the same | 1.5°C about the same | 696 mm |
| Étrépagny 12 km | same station | 25.3°C about the same | 1.4°C about the same | 774 mm |
| Gasny 14 km | Magnanville | 25.5°C about the same | 1.7°C about the same | 642 mm |
| Chaumont-en-Vexin 17 km | Jaméricourt | 25.1°C about the same | 1.5°C about the same | 696 mm |
Château-sur-Epte weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Étrépagny station; sunshine at Evreux-Huest.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.3°C | 1.4°C | 4.3°C | 74 mm | 64 |
| February | 8.5°C | 1.3°C | 4.9°C | 57 mm | 80 |
| March | 12.4°C | 2.9°C | 7.7°C | 57 mm | 128 |
| April | 16.2°C | 4.6°C | 10.4°C | 54 mm | 173 |
| May | 19.7°C | 8.0°C | 13.9°C | 65 mm | 194 |
| June | 23.0°C | 10.9°C | 17.0°C | 61 mm | 208 |
| July | 25.3°C | 12.7°C | 19.0°C | 59 mm | 214 |
| August | 25.3°C | 12.6°C | 19.0°C | 62 mm | 206 |
| September | 21.4°C | 10.0°C | 15.7°C | 55 mm | 170 |
| October | 16.2°C | 7.6°C | 11.9°C | 68 mm | 120 |
| November | 10.8°C | 4.3°C | 7.6°C | 71 mm | 72 |
| December | 7.5°C | 1.9°C | 4.7°C | 92 mm | 62 |
| Year | 16.1°C | 6.5°C | 11.3°C | 774 mm | 1,690 |
Where Château-sur-Epte’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Étrépagny, 12 km away: statistics for 1991–2020.
- 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, Evreux-Huest, 38 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 Eure.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Château-sur-Epte’s climate
How warm does Château-sur-Epte get in summer?
July is the warmest month, with average highs of 25.3°C. About 52 days a year reach 25°C, fewer than 66% of mainland French towns, and about 14 reach 30°C.
How cold does Château-sur-Epte get in winter?
February nights average 1.3°C. The air drops to 0°C or below on about 53 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Château-sur-Epte get?
About 774 mm a year, more than 54% of mainland French towns. December is the wettest month (92 mm) and April the driest (54 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Evreux-Huest (38 km away), averages 1,690 hours of sunshine a year.
Are these figures for Château-sur-Epte itself?
No: they are the normals of the Météo-France station matched to Château-sur-Epte, Étrépagny, 12 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 ETREPAGNY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Château-sur-Epte →
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.