Val-d'Arc has some of the coldest winter nights among mainland French towns
In July the day’s top temperature is typically 27.5°C. Rain peaks in December and eases off in April. It is a wet place: more rain falls here than on 98% of mainland French towns. Picnics, hikes and garden evenings suit May, June and September, with highs of 22–25°C.
Figures from Météo-France’s Gilly-sur-Isère station, 13 km north.
A year in Val-d'Arc at a glance
Each month’s typical high and low in °C, at the Gilly-sur-Isère station.
What a year in Val-d'Arc feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Gilly-sur-Isère.
About 1,354 mm of rain a year
December is the wettest month and April the driest. About 49 days a year bring 10 mm or more. 2nd wettest of 37 towns of 2,500+ in Savoie.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Chambery-Aix
A frosty town: 94 frosts and 85 days of 25°C a year
On about 94 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 85 days a year reach 25°C, and 26 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Gilly-sur-Isère: 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 Gilly-sur-Isère
Gilly-sur-Isère is 13 km north of Val-d'Arc. Every figure on this page is the station’s, not a measurement in Val-d'Arc itself.
| Station (Météo-France number) | Gilly-sur-Isère (73124001) |
| Distance from the town | 13 km north |
| Station altitude | 330 m |
| Town altitude (its center) | 322 m |
| Period | 1991–2020 |
| Nearest station of any kind | 7.9 km |
| Sunshine measured at | Chambery-Aix, 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 Val-d'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.
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 |
|---|---|---|---|---|
| Val-d'Arc | Gilly-sur-Isère | 27.5°C | −2.8°C | 1,354 mm |
| Saint-Pierre-d'Albigny 12 km | Saint-Pierre-de-Soucy | 27.7°C about the same | −1.8°C 1°C milder | 1,122 mm |
| La Léchère 13 km | Moûtiers | 28.4°C 0.9°C warmer | −1.9°C 0.9°C milder | 930 mm |
| Gilly-sur-Isère 13 km | same station | 27.5°C about the same | −2.8°C about the same | 1,354 mm |
| Mercury 15 km | same station | 27.5°C about the same | −2.8°C about the same | 1,354 mm |
| Albertville 15 km | same station | 27.5°C about the same | −2.8°C about the same | 1,354 mm |
| Grand-Aigueblanche 16 km | Moûtiers | 28.4°C 0.9°C warmer | −1.9°C 0.9°C milder | 930 mm |
Val-d'Arc weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Gilly-sur-Isère station; sunshine at Chambery-Aix.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.3°C | −2.8°C | 1.7°C | 136 mm | 77 |
| February | 8.8°C | −2.1°C | 3.3°C | 106 mm | 102 |
| March | 14.1°C | 1.5°C | 7.8°C | 108 mm | 158 |
| April | 18.0°C | 4.5°C | 11.3°C | 93 mm | 176 |
| May | 21.8°C | 8.7°C | 15.3°C | 109 mm | 202 |
| June | 25.4°C | 12.3°C | 18.9°C | 105 mm | 236 |
| July | 27.5°C | 14.0°C | 20.7°C | 100 mm | 262 |
| August | 27.1°C | 13.8°C | 20.5°C | 108 mm | 237 |
| September | 22.7°C | 10.2°C | 16.4°C | 97 mm | 181 |
| October | 17.7°C | 6.2°C | 12.0°C | 109 mm | 124 |
| November | 10.9°C | 1.2°C | 6.1°C | 126 mm | 75 |
| December | 6.5°C | −1.9°C | 2.3°C | 158 mm | 66 |
| Year | 17.2°C | 5.5°C | 11.4°C | 1,354 mm | 1,895 |
Where Val-d'Arc’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Gilly-sur-Isère, 13 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, Chambery-Aix, 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 Val-d'Arc’s climate
How warm does Val-d'Arc get in summer?
July is the warmest month, with average highs of 27.5°C. About 85 days a year reach 25°C, more than 77% of mainland French towns, and about 26 reach 30°C.
How cold does Val-d'Arc get in winter?
January nights average −2.8°C. The air drops to 0°C or below on about 94 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Val-d'Arc get?
About 1,354 mm a year, more than 98% of mainland French towns. December is the wettest month (158 mm) and April the driest (93 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Chambery-Aix (35 km away), averages 1,895 hours of sunshine a year.
Are these figures for Val-d'Arc itself?
No: they are the normals of the Météo-France station matched to Val-d'Arc, Gilly-sur-Isère, 13 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 GILLY SUR ISERE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Val-d'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.