Sainte-Vertu gets more frosts than 86% of mainland French towns
High summer brings afternoon highs near 27.2°C. Summer afternoons here are warmer than in 70% of mainland French towns. Rain is spread evenly through the year: the wettest month, October, gets little more than the driest, February. Picnics, hikes and garden evenings suit May, June, August and September, with highs of 21–27°C.
Figures from Météo-France’s Chablis station, 12 km north-west.
A year in Sainte-Vertu at a glance
Each month’s typical high and low in °C, at the Chablis station.
What a year in Sainte-Vertu feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Chablis.
About 740 mm of rain a year
October is the wettest month and February the driest. About 20 days a year bring 10 mm or more. 6th 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: 65 frosts and 71 days of 25°C a year
On about 65 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 71 days a year reach 25°C, and 23 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Chablis: 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 Chablis
Chablis is 12 km north-west of Sainte-Vertu. Every figure on this page is the station’s, not a measurement in Sainte-Vertu itself.
| Station (Météo-France number) | Chablis (89068001) |
| Distance from the town | 12 km north-west |
| Station altitude | 141 m |
| Town altitude (its center) | 167 m |
| Period | 1991–2020 |
| Nearest station of any kind | 7.9 km |
| Sunshine measured at | Châtillon/Seine, 51 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 Sainte-Vertu 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 |
|---|---|---|---|---|
| Sainte-Vertu | Chablis | 27.2°C | 0.6°C | 740 mm |
| Tonnerre 13 km | same station | 27.2°C about the same | 0.6°C about the same | 740 mm |
| Auxerre 26 km | Aillant | 27.5°C about the same | 0.3°C about the same | 727 mm |
| Monéteau 27 km | Aillant | 27.5°C about the same | 0.3°C about the same | 727 mm |
| Avallon 29 km | Merry-sur-Yonne | 26.4°C 0.8°C cooler | 0.8°C about the same | 777 mm |
Sainte-Vertu weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Chablis station; sunshine at Châtillon/Seine.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.1°C | 0.6°C | 3.9°C | 57 mm | 67 |
| February | 8.8°C | 0.3°C | 4.6°C | 52 mm | 90 |
| March | 13.2°C | 2.1°C | 7.6°C | 54 mm | 148 |
| April | 17.0°C | 4.1°C | 10.5°C | 62 mm | 183 |
| May | 20.8°C | 8.0°C | 14.4°C | 73 mm | 201 |
| June | 24.5°C | 11.3°C | 17.9°C | 57 mm | 229 |
| July | 27.2°C | 13.2°C | 20.2°C | 59 mm | 235 |
| August | 27.0°C | 13.1°C | 20.0°C | 59 mm | 215 |
| September | 22.4°C | 9.7°C | 16.0°C | 59 mm | 176 |
| October | 17.2°C | 7.3°C | 12.3°C | 74 mm | 121 |
| November | 11.1°C | 3.6°C | 7.4°C | 66 mm | 72 |
| December | 7.8°C | 1.4°C | 4.6°C | 67 mm | 57 |
| Year | 17.0°C | 6.2°C | 11.6°C | 740 mm | 1,792 |
Where Sainte-Vertu’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Chablis, 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, Châtillon/Seine, 51 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 Sainte-Vertu’s climate
How warm does Sainte-Vertu get in summer?
July is the warmest month, with average highs of 27.2°C. About 71 days a year reach 25°C, more than 65% of mainland French towns, and about 23 reach 30°C.
How cold does Sainte-Vertu get in winter?
February nights average 0.3°C. The air drops to 0°C or below on about 65 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Sainte-Vertu get?
About 740 mm a year, less than 54% of mainland French towns. October is the wettest month (74 mm) and February the driest (52 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Châtillon/Seine (51 km away), averages 1,792 hours of sunshine a year.
Are these figures for Sainte-Vertu itself?
No: they are the normals of the Météo-France station matched to Sainte-Vertu, Chablis, 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 CHABLIS_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Sainte-Vertu →
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.