Winter nights in Générac are milder than in 85% of mainland French towns
High summer brings afternoon highs near 27.1°C. Warm afternoons come more often than in 73% of mainland French towns. Seasons differ by 24°C, from the coldest nights to the warmest afternoons. Wet days, with 1 mm of rain or more, come about 122 times a year.
Figures from Météo-France’s Saint-Gervais station, 17 km south.
A year in Générac at a glance
Each month’s typical high and low in °C, at the Saint-Gervais station.
What a year in Générac feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Gervais.
About 825 mm of rain a year
November is the wettest month and July the driest. About 26 days a year bring 10 mm or more. 90th wettest of 113 towns of 2,500+ in Gironde.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Pauillac
28 frosts and 82 days of 25°C a year
On about 28 nights a year the air drops to 0°C or below, and on about 1 days it stays below freezing all day. About 82 days a year reach 25°C, and 24 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Gervais: 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-Gervais
Saint-Gervais is 17 km south of Générac. Every figure on this page is the station’s, not a measurement in Générac itself.
| Station (Météo-France number) | Saint-Gervais (33415001) |
| Distance from the town | 17 km south |
| Station altitude | 42 m |
| Town altitude (its center) | 32 m |
| Period | 1995–2020 (the station’s own record) |
| Nearest station of any kind | 9.5 km |
| Sunshine measured at | Pauillac, 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 Générac 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 Gironde.
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 |
|---|---|---|---|---|
| Générac | Saint-Gervais | 27.1°C | 3.5°C | 825 mm |
| Saint-Savin 8.9 km | Montlieu | 27.2°C about the same | 2.4°C 1.1°C colder | 929 mm |
| Blaye 9.5 km | Pauillac | 26.7°C about the same | 4.0°C 0.5°C milder | 857 mm |
| Saint-Yzan-de-Soudiac 12 km | Montlieu | 27.2°C about the same | 2.4°C 1.1°C colder | 929 mm |
| Cézac 13 km | same station | 27.1°C about the same | 3.5°C about the same | 825 mm |
| Saint-Ciers-sur-Gironde 14 km | Pauillac | 26.7°C about the same | 4.0°C 0.5°C milder | 857 mm |
| Pauillac 16 km | Pauillac | 26.7°C about the same | 4.0°C 0.5°C milder | 857 mm |
Générac weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Gervais station; sunshine at Pauillac.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 10.2°C | 3.5°C | 6.8°C | 84 mm | 84 |
| February | 11.7°C | 3.3°C | 7.5°C | 61 mm | 126 |
| March | 15.4°C | 5.4°C | 10.4°C | 61 mm | 171 |
| April | 18.3°C | 7.6°C | 13.0°C | 67 mm | 205 |
| May | 21.9°C | 11.1°C | 16.5°C | 64 mm | 232 |
| June | 25.3°C | 14.1°C | 19.7°C | 64 mm | 251 |
| July | 27.1°C | 15.5°C | 21.3°C | 45 mm | 273 |
| August | 27.5°C | 15.4°C | 21.5°C | 52 mm | 255 |
| September | 24.3°C | 12.5°C | 18.4°C | 63 mm | 223 |
| October | 19.9°C | 10.3°C | 15.1°C | 76 mm | 158 |
| November | 13.8°C | 6.3°C | 10.0°C | 99 mm | 106 |
| December | 10.6°C | 3.8°C | 7.2°C | 92 mm | 92 |
| Year | 18.8°C | 9.1°C | 13.9°C | 825 mm | 2,175 |
Where Générac’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Gervais, 17 km away: statistics for 1991–2020 (the station’s own years, 1995–2020, 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, Pauillac, 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 Gironde.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Générac’s climate
How warm does Générac get in summer?
August is the warmest month, with average highs of 27.5°C. About 82 days a year reach 25°C, more than 73% of mainland French towns, and about 24 reach 30°C.
How cold does Générac get in winter?
February nights average 3.3°C. The air drops to 0°C or below on about 28 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Générac get?
About 825 mm a year, more than 66% of mainland French towns. November is the wettest month (99 mm) and July the driest (45 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Pauillac (19 km away), averages 2,175 hours of sunshine a year.
Are these figures for Générac itself?
No: they are the normals of the Météo-France station matched to Générac, Saint-Gervais, 17 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 GERVAIS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Générac →
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.