July in Rocher runs hotter than in 91% of mainland French towns
On a normal January night the air cools to about 1.3°C. By rainfall alone, it ranks wetter than 90% of mainland French towns. Rain follows the seasons: October brings about 3.1 times as much as July. Frost greets about 38 mornings a year, so leave time to clear the car.
Figures from Météo-France’s Lanas Syn station, 8.1 km south-east.
A year in Rocher at a glance
Each month’s typical high and low in °C, at the Lanas Syn station.
What a year in Rocher feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Lanas Syn.
About 1,067 mm of rain a year
October is the wettest month and July the driest. About 31 days a year bring 10 mm or more. 7th wettest of 22 towns of 2,500+ in Ardèche.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lanas Syn
38 frosts and 98 days of 25°C a year
On about 38 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 98 days a year reach 25°C, and 43 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Lanas Syn: 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 Lanas Syn
Lanas Syn is 8.1 km south-east of Rocher. Every figure on this page is the station’s, not a measurement in Rocher itself.
| Station (Météo-France number) | Lanas Syn (07131001) |
| Distance from the town | 8.1 km south-east |
| Station altitude | 265 m |
| Town altitude (its center) | 338 m |
| Period | 1991–2020 |
| Nearest station of any kind | 4.6 km |
| Sunshine measured at | the same station |
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 Rocher 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 Ardèche.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Rocher | Lanas Syn | 29.9°C | 1.3°C | 1,067 mm |
| Saint-Étienne-de-Fontbellon 7.9 km | Aubenas Sa | 30.4°C 0.5°C warmer | 1.0°C about the same | 1,061 mm |
| Aubenas 9.6 km | Vals-les-Bains | 29.7°C about the same | 1.6°C about the same | 1,250 mm |
| Vals-les-Bains 12 km | Vals-les-Bains | 29.7°C about the same | 1.6°C about the same | 1,250 mm |
| Villeneuve-de-Berg 18 km | Mirabel Sa | 29.5°C about the same | 1.2°C about the same | 998 mm |
| Les Vans 23 km | Grospierres | 31.9°C 2°C warmer | 0.1°C 1.2°C colder | 1,095 mm |
Rocher weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Lanas Syn station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.4°C | 1.3°C | 5.4°C | 84 mm | 131 |
| February | 10.9°C | 1.5°C | 6.2°C | 56 mm | 153 |
| March | 15.1°C | 4.3°C | 9.7°C | 61 mm | 208 |
| April | 18.0°C | 7.0°C | 12.5°C | 81 mm | 208 |
| May | 22.2°C | 10.6°C | 16.4°C | 90 mm | 246 |
| June | 26.8°C | 14.4°C | 20.6°C | 68 mm | 286 |
| July | 29.9°C | 16.8°C | 23.3°C | 49 mm | 314 |
| August | 29.5°C | 16.4°C | 23.0°C | 60 mm | 284 |
| September | 24.2°C | 12.9°C | 18.6°C | 138 mm | 220 |
| October | 18.7°C | 9.5°C | 14.1°C | 151 mm | 154 |
| November | 13.0°C | 5.1°C | 9.0°C | 140 mm | 125 |
| December | 9.8°C | 2.0°C | 5.9°C | 87 mm | 120 |
| Year | 19.0°C | 8.5°C | 13.7°C | 1,067 mm | 2,447 |
Where Rocher’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Lanas Syn, 8.1 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, Lanas Syn, 8.1 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 Ardèche.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Rocher’s climate
How warm does Rocher get in summer?
July is the warmest month, with average highs of 29.9°C. About 98 days a year reach 25°C, more than 87% of mainland French towns, and about 43 reach 30°C.
How cold does Rocher get in winter?
January nights average 1.3°C. The air drops to 0°C or below on about 38 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Rocher get?
About 1,067 mm a year, more than 90% of mainland French towns. October is the wettest month (151 mm) and July the driest (49 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lanas Syn (8.1 km away), averages 2,447 hours of sunshine a year.
Are these figures for Rocher itself?
No: they are the normals of the Météo-France station matched to Rocher, Lanas Syn, 8.1 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 LANAS SYN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Rocher →
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.