No extremes in Gometz-le-Châtel: its weather tracks the middle of mainland French towns
A typical January night drops to 1.5°C and a July afternoon reaches 25.2°C; 735 mm of rain falls in a year. Days of 25°C are scarce: about 50 a year, fewer than in 68% of mainland French towns. From frosty January to warm July, readings climb 24°C. Expect about 46 frosty starts a year, nights when the air falls below freezing.
These are the figures of Météo-France’s Gometz-le-Chat. station, 0.7 km south-west.
A year in Gometz-le-Châtel at a glance
Each month’s typical high and low in °C, at the Gometz-le-Chat. station.
What a year in Gometz-le-Châtel feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Gometz-le-Chat..
About 735 mm of rain a year
December is the wettest month and April the driest. About 20 days a year bring 10 mm or more. The wettest of 96 towns of 2,500+ in Essonne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Trappes
46 frosts and 50 days of 25°C a year
On about 46 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 50 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Gometz-le-Chat.: 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 Gometz-le-Chat.
Gometz-le-Chat. is 0.7 km south-west of Gometz-le-Châtel. Every figure on this page is the station’s, not a measurement in Gometz-le-Châtel itself.
| Station (Météo-France number) | Gometz-le-Chat. (91275001) |
| Distance from the town | 0.7 km south-west |
| Station altitude | 159 m |
| Town altitude (its center) | 114 m |
| Period | 1991–2020 |
| Sunshine measured at | Trappes, 14 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 Gometz-le-Châtel 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 Essonne.
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 |
|---|---|---|---|---|
| Gometz-le-Châtel | Gometz-le-Chat. | 25.2°C | 1.5°C | 735 mm |
| Bures-sur-Yvette 1.6 km | same station | 25.2°C about the same | 1.5°C about the same | 735 mm |
| Les Ulis 2 km | same station | 25.2°C about the same | 1.5°C about the same | 735 mm |
| Gif-sur-Yvette 2.3 km | same station | 25.2°C about the same | 1.5°C about the same | 735 mm |
| Orsay 3.9 km | Fontenay-lès-B. | 26.1°C 0.9°C warmer | 1.5°C about the same | 696 mm |
| Briis-sous-Forges 6.1 km | Fontenay-lès-B. | 26.1°C 0.9°C warmer | 1.5°C about the same | 696 mm |
| Saint-Rémy-lès-Chevreuse 6.1 km | Toussus-le-Noble | 25.2°C about the same | 1.6°C about the same | 677 mm |
Gometz-le-Châtel weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Gometz-le-Chat. station; sunshine at Trappes.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.7°C | 1.5°C | 4.1°C | 60 mm | 57 |
| February | 7.9°C | 1.3°C | 4.6°C | 54 mm | 81 |
| March | 11.9°C | 3.4°C | 7.7°C | 54 mm | 134 |
| April | 15.6°C | 5.3°C | 10.5°C | 52 mm | 176 |
| May | 19.2°C | 8.6°C | 13.9°C | 73 mm | 202 |
| June | 22.6°C | 11.6°C | 17.1°C | 61 mm | 210 |
| July | 25.2°C | 13.4°C | 19.3°C | 61 mm | 222 |
| August | 25.2°C | 13.2°C | 19.2°C | 60 mm | 216 |
| September | 21.1°C | 10.4°C | 15.8°C | 53 mm | 177 |
| October | 15.9°C | 7.9°C | 11.9°C | 65 mm | 117 |
| November | 10.3°C | 4.4°C | 7.4°C | 67 mm | 68 |
| December | 7.1°C | 2.0°C | 4.5°C | 77 mm | 55 |
| Year | 15.7°C | 6.9°C | 11.3°C | 735 mm | 1,714 |
Where Gometz-le-Châtel’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Gometz-le-Chat., 0.7 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, Trappes, 14 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 Essonne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Gometz-le-Châtel’s climate
How warm does Gometz-le-Châtel get in summer?
July is the warmest month, with average highs of 25.2°C. About 50 days a year reach 25°C, fewer than 68% of mainland French towns, and about 12 reach 30°C.
How cold does Gometz-le-Châtel get in winter?
February nights average 1.3°C. The air drops to 0°C or below on about 46 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Gometz-le-Châtel get?
About 735 mm a year, less than 58% of mainland French towns. December is the wettest month (77 mm) and April the driest (52 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Trappes (14 km away), averages 1,714 hours of sunshine a year.
Are these figures for Gometz-le-Châtel itself?
No: they are the normals of the Météo-France station matched to Gometz-le-Châtel, Gometz-le-Chat., 0.7 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 GOMETZ-LE-CHAT., edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Gometz-le-Châtel →
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.