Summer afternoons in Serpaize are warmer than in 81% of mainland French towns
The depth of winter brings overnight lows near 1.0°C. Winter nights are cold: in January they are colder than in 75% of mainland French towns. The gap between a January night and a July afternoon is 27°C. Plan for rain on about 100 days a year, the days with 1 mm or more.
These are the figures of Météo-France’s Saint-Genis-Laval station, 19 km north-west.
A year in Serpaize at a glance
Each month’s typical high and low in °C, at the Saint-Genis-Laval station.
What a year in Serpaize feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Genis-Laval.
About 783 mm of rain a year
October is the wettest month and February the driest. About 24 days a year bring 10 mm or more. 110th wettest of 110 towns of 2,500+ in Isère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lyon-Bron
44 frosts and 84 days of 25°C a year
On about 44 nights a year the air drops to 0°C or below, and on about 5 days it stays below freezing all day. About 84 days a year reach 25°C, and 33 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Genis-Laval: 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-Genis-Laval
Saint-Genis-Laval is 19 km north-west of Serpaize. Every figure on this page is the station’s, not a measurement in Serpaize itself.
| Station (Météo-France number) | Saint-Genis-Laval (69204002) |
| Distance from the town | 19 km north-west |
| Station altitude | 290 m |
| Town altitude (its center) | 307 m |
| Period | 1991–2020 |
| Nearest station of any kind | 5.4 km |
| Sunshine measured at | Lyon-Bron, 18 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 Serpaize 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 Isère.
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 |
|---|---|---|---|---|
| Serpaize | Saint-Genis-Laval | 28.2°C | 1.0°C | 783 mm |
| Pont-Évêque 3 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Vienne 4.8 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Estrablin 6.1 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Saint-Just-Chaleyssin 7.1 km | Lyon-Saint-Exupery | 27.5°C 0.7°C cooler | 1.1°C about the same | 863 mm |
| Chaponnay 8.1 km | Lyon-Bron | 28.2°C about the same | 1.1°C about the same | 821 mm |
| Communay 8.3 km | same station | 28.2°C about the same | 1.0°C about the same | 783 mm |
Serpaize weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Genis-Laval station; sunshine at Lyon-Bron.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.9°C | 1.0°C | 3.9°C | 48 mm | 71 |
| February | 8.7°C | 1.3°C | 5.0°C | 37 mm | 102 |
| March | 13.7°C | 4.2°C | 9.0°C | 47 mm | 174 |
| April | 17.4°C | 6.9°C | 12.2°C | 68 mm | 198 |
| May | 21.4°C | 10.7°C | 16.0°C | 75 mm | 224 |
| June | 25.7°C | 14.3°C | 20.0°C | 68 mm | 257 |
| July | 28.2°C | 16.3°C | 22.3°C | 65 mm | 288 |
| August | 28.1°C | 16.0°C | 22.0°C | 63 mm | 263 |
| September | 22.9°C | 12.4°C | 17.7°C | 80 mm | 204 |
| October | 17.3°C | 9.2°C | 13.3°C | 95 mm | 131 |
| November | 10.9°C | 4.6°C | 7.8°C | 90 mm | 79 |
| December | 7.3°C | 1.7°C | 4.5°C | 49 mm | 59 |
| Year | 17.4°C | 8.2°C | 12.8°C | 783 mm | 2,050 |
Where Serpaize’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Genis-Laval, 19 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, Lyon-Bron, 18 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 Isère.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Serpaize’s climate
How warm does Serpaize get in summer?
July is the warmest month, with average highs of 28.2°C. About 84 days a year reach 25°C, more than 75% of mainland French towns, and about 33 reach 30°C.
How cold does Serpaize get in winter?
January nights average 1.0°C. The air drops to 0°C or below on about 44 nights a year, and about 5 days a year stay below freezing all day.
How much rain does Serpaize get?
About 783 mm a year, more than 56% of mainland French towns. October is the wettest month (95 mm) and February the driest (37 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lyon-Bron (18 km away), averages 2,050 hours of sunshine a year.
Are these figures for Serpaize itself?
No: they are the normals of the Météo-France station matched to Serpaize, Saint-Genis-Laval, 19 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-GENIS-LAVAL, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Serpaize →
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.