Bonneval-sur-Arc sits near the bottom of mainland French towns for July heat
Nights in January average −8.9°C. A year here swings 28°C from midwinter lows to midsummer highs. In January, nights here are colder than in almost every mainland French town. Keep the boiler serviced for the months from September to May, which average under 10°C.
These are the figures of Météo-France’s Val d'Isère Jos station, 9.7 km north-west.
A year in Bonneval-sur-Arc at a glance
Each month’s typical high and low in °C, at the Val d'Isère Jos station.
What a year in Bonneval-sur-Arc feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Val d'Isère Jos.
About 913 mm of rain a year
December is the wettest month and April the driest. About 30 days a year bring 10 mm or more. 36th wettest of 37 towns of 2,500+ in Savoie.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Bourg-Saint-Maurice
A frosty town: 185 frosts and 3 days of 25°C a year
On about 185 nights a year the air drops to 0°C or below, and on about 56 days it stays below freezing all day. About 3 days a year reach 25°C, and 0 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Val d'Isère Jos: 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 Val d'Isère Jos
Val d'Isère Jos is 9.7 km north-west of Bonneval-sur-Arc. Every figure on this page is the station’s, not a measurement in Bonneval-sur-Arc itself.
| Station (Météo-France number) | Val d'Isère Jos (73304005) |
| Distance from the town | 9.7 km north-west |
| Station altitude | 1,850 m |
| Town altitude (its center) | 1,823 m |
| Period | 1992–2020 (the station’s own record) |
| Nearest station of any kind | 6.9 km |
| Sunshine measured at | Bourg-Saint-Maurice, 35 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 Bonneval-sur-Arc 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 Savoie.
Bonneval-sur-Arc weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Val d'Isère Jos station; sunshine at Bourg-Saint-Maurice.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | −0.4°C | −8.9°C | −4.6°C | 81 mm | 110 |
| February | 0.4°C | −9.1°C | −4.4°C | 62 mm | 122 |
| March | 3.4°C | −6.0°C | −1.3°C | 73 mm | 170 |
| April | 6.4°C | −2.0°C | 2.2°C | 57 mm | 176 |
| May | 11.7°C | 2.2°C | 7.0°C | 91 mm | 200 |
| June | 16.4°C | 5.3°C | 10.8°C | 85 mm | 226 |
| July | 18.5°C | 6.5°C | 12.5°C | 83 mm | 249 |
| August | 18.1°C | 6.6°C | 12.3°C | 78 mm | 232 |
| September | 14.0°C | 3.5°C | 8.8°C | 62 mm | 189 |
| October | 10.8°C | 0.7°C | 5.8°C | 68 mm | 143 |
| November | 4.6°C | −4.0°C | 0.3°C | 81 mm | 99 |
| December | 0.6°C | −7.5°C | −3.4°C | 93 mm | 94 |
| Year | 8.7°C | −1.1°C | 3.8°C | 913 mm | 2,009 |
Where Bonneval-sur-Arc’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Val d'Isère Jos, 9.7 km away: statistics for 1991–2020 (the station’s own years, 1992–2020, 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, Bourg-Saint-Maurice, 35 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 Savoie.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Bonneval-sur-Arc’s climate
How warm does Bonneval-sur-Arc get in summer?
July is the warmest month, with average highs of 18.5°C. About 3 days a year reach 25°C, fewer than almost every mainland French town, and about 0 reach 30°C.
How cold does Bonneval-sur-Arc get in winter?
February nights average −9.1°C. The air drops to 0°C or below on about 185 nights a year, and about 56 days a year stay below freezing all day.
How much rain does Bonneval-sur-Arc get?
About 913 mm a year, more than 79% of mainland French towns. December is the wettest month (93 mm) and April the driest (57 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Bourg-Saint-Maurice (35 km away), averages 2,009 hours of sunshine a year.
Are these figures for Bonneval-sur-Arc itself?
No: they are the normals of the Météo-France station matched to Bonneval-sur-Arc, Val d'Isère Jos, 9.7 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 VAL D'ISERE JOS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Bonneval-sur-Arc →
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.