Winter nights in Châtel-Gérard are colder than in 82% of mainland French towns
Expect July afternoons of about 26.0°C. Wet weather is most frequent in May and least in March. Waterproofs come out on about 126 days a year, each with 1 mm of rain or more.
These are the figures of Météo-France’s Semur-en-Auxois station, 25 km south-east.
A year in Châtel-Gérard at a glance
Each month’s typical high and low in °C, at the Semur-en-Auxois station.
What a year in Châtel-Gérard feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Semur-en-Auxois.
About 778 mm of rain a year
May is the wettest month and March the driest. About 22 days a year bring 10 mm or more. The wettest of 19 towns of 2,500+ in Yonne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Châtillon/Seine
A frosty town: 61 frosts and 58 days of 25°C a year
On about 61 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 58 days a year reach 25°C, and 19 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Semur-en-Auxois: 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 Semur-en-Auxois
Semur-en-Auxois is 25 km south-east of Châtel-Gérard. Every figure on this page is the station’s, not a measurement in Châtel-Gérard itself.
| Station (Météo-France number) | Semur-en-Auxois (21603001) |
| Distance from the town | 25 km south-east |
| Station altitude | 314 m |
| Town altitude (its center) | 319 m |
| Period | 1991–2020 |
| Nearest station of any kind | 13 km |
| Sunshine measured at | Châtillon/Seine, 43 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 Châtel-Gérard 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 Yonne.
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 |
|---|---|---|---|---|
| Châtel-Gérard | Semur-en-Auxois | 26.0°C | 0.3°C | 778 mm |
| Montbard 18 km | Montbard | 26.3°C about the same | 0.5°C about the same | 854 mm |
| Avallon 21 km | Merry-sur-Yonne | 26.4°C about the same | 0.8°C 0.5°C milder | 777 mm |
| Semur-en-Auxois 24 km | same station | 26.0°C about the same | 0.3°C about the same | 778 mm |
| Tonnerre 27 km | Chablis | 27.2°C 1.2°C warmer | 0.6°C about the same | 740 mm |
| Venarey-les-Laumes 29 km | Montbard | 26.3°C about the same | 0.5°C about the same | 854 mm |
Châtel-Gérard weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Semur-en-Auxois station; sunshine at Châtillon/Seine.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.2°C | 0.3°C | 3.3°C | 62 mm | 67 |
| February | 7.6°C | 0.2°C | 3.9°C | 54 mm | 90 |
| March | 12.2°C | 2.4°C | 7.3°C | 53 mm | 148 |
| April | 15.5°C | 4.5°C | 10.0°C | 64 mm | 183 |
| May | 19.5°C | 8.3°C | 13.9°C | 77 mm | 201 |
| June | 23.5°C | 11.7°C | 17.6°C | 67 mm | 229 |
| July | 26.0°C | 13.7°C | 19.9°C | 63 mm | 235 |
| August | 25.9°C | 13.6°C | 19.7°C | 59 mm | 215 |
| September | 21.3°C | 10.0°C | 15.6°C | 65 mm | 176 |
| October | 16.2°C | 7.5°C | 11.8°C | 73 mm | 121 |
| November | 10.3°C | 3.6°C | 7.0°C | 74 mm | 72 |
| December | 7.0°C | 1.3°C | 4.1°C | 68 mm | 57 |
| Year | 15.9°C | 6.4°C | 11.2°C | 778 mm | 1,792 |
Where Châtel-Gérard’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Semur-en-Auxois, 25 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, Châtillon/Seine, 43 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 Yonne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Châtel-Gérard’s climate
How warm does Châtel-Gérard get in summer?
July is the warmest month, with average highs of 26.0°C. About 58 days a year reach 25°C, fewer than 56% of mainland French towns, and about 19 reach 30°C.
How cold does Châtel-Gérard get in winter?
February nights average 0.2°C. The air drops to 0°C or below on about 61 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Châtel-Gérard get?
About 778 mm a year, more than 55% of mainland French towns. May is the wettest month (77 mm) and March the driest (53 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Châtillon/Seine (43 km away), averages 1,792 hours of sunshine a year.
Are these figures for Châtel-Gérard itself?
No: they are the normals of the Météo-France station matched to Châtel-Gérard, Semur-en-Auxois, 25 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 SEMUR EN AUXOIS_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Châtel-Gérard →
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.