Collorec sits near the top of mainland French towns for rain, with 1,552 mm a year
On a normal July day the thermometer tops out near 21.3°C. Summers stay cool: July afternoons here are cooler than in 98% of mainland French towns. The rainiest month is December; the driest is June. Frost greets about 29 mornings a year, so leave time to clear the car.
Figures from Météo-France’s Brennilis station, 10 km north-west.
A year in Collorec at a glance
Each month’s typical high and low in °C, at the Brennilis station.
What a year in Collorec feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Brennilis.
About 1,552 mm of rain a year
December is the wettest month and June the driest. About 54 days a year bring 10 mm or more. The wettest of 91 towns of 2,500+ in Finistère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Landivisiau
29 frosts and 19 days of 25°C a year
On about 29 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 19 days a year reach 25°C, and 2 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Brennilis: 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 Brennilis
Brennilis is 10 km north-west of Collorec. Every figure on this page is the station’s, not a measurement in Collorec itself.
| Station (Météo-France number) | Brennilis (29018001) |
| Distance from the town | 10 km north-west |
| Station altitude | 220 m |
| Town altitude (its center) | 130 m |
| Period | 1991–2020 |
| Sunshine measured at | Landivisiau, 39 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 Collorec 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 Finistère.
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 |
|---|---|---|---|---|
| Collorec | Brennilis | 21.3°C | 3.0°C | 1,552 mm |
| Châteauneuf-du-Faou 12 km | Coray Chat Eau | 21.8°C 0.5°C warmer | 3.3°C about the same | 1,423 mm |
| Carhaix-Plouguer 15 km | Carhaix | 22.9°C 1.6°C warmer | 3.2°C about the same | 1,112 mm |
| Pleyben 16 km | Saint-Ségal S A | 22.5°C 1.2°C warmer | 3.9°C 0.9°C milder | 1,126 mm |
| Gourin 20 km | Guiscriff | 22.9°C 1.6°C warmer | 3.3°C about the same | 1,366 mm |
| Pont-de-Buis-lès-Quimerch 24 km | Saint-Ségal S A | 22.5°C 1.2°C warmer | 3.9°C 0.9°C milder | 1,126 mm |
| Châteaulin 25 km | Saint-Ségal S A | 22.5°C 1.2°C warmer | 3.9°C 0.9°C milder | 1,126 mm |
Collorec weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Brennilis station; sunshine at Landivisiau.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.5°C | 3.0°C | 5.7°C | 190 mm | 60 |
| February | 9.1°C | 2.6°C | 5.8°C | 154 mm | 74 |
| March | 11.4°C | 3.8°C | 7.6°C | 112 mm | 110 |
| April | 13.9°C | 5.0°C | 9.4°C | 108 mm | 143 |
| May | 16.9°C | 7.9°C | 12.4°C | 92 mm | 171 |
| June | 19.6°C | 10.5°C | 15.1°C | 84 mm | 183 |
| July | 21.3°C | 12.2°C | 16.7°C | 86 mm | 169 |
| August | 21.4°C | 12.2°C | 16.8°C | 95 mm | 165 |
| September | 19.1°C | 10.3°C | 14.7°C | 99 mm | 154 |
| October | 15.3°C | 8.2°C | 11.8°C | 154 mm | 105 |
| November | 11.4°C | 5.6°C | 8.5°C | 174 mm | 68 |
| December | 9.0°C | 3.5°C | 6.3°C | 205 mm | 62 |
| Year | 14.7°C | 7.1°C | 10.9°C | 1,552 mm | 1,463 |
Where Collorec’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Brennilis, 10 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, Landivisiau, 39 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 Finistère.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Collorec’s climate
How warm does Collorec get in summer?
August is the warmest month, with average highs of 21.4°C. About 19 days a year reach 25°C, fewer than 96% of mainland French towns, and about 2 reach 30°C.
How cold does Collorec get in winter?
February nights average 2.6°C. The air drops to 0°C or below on about 29 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Collorec get?
About 1,552 mm a year, more than almost every mainland French town. December is the wettest month (205 mm) and June the driest (84 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Landivisiau (39 km away), averages 1,463 hours of sunshine a year.
Are these figures for Collorec itself?
No: they are the normals of the Météo-France station matched to Collorec, Brennilis, 10 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 BRENNILIS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Collorec →
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.