Few mainland French towns get fewer days of 25 degrees or more than Saint-Michel-en-Grève
The coldest hours of a January night bottom out at 4.4°C on average. Its January nights stay gentler than in 95% of mainland French towns. The seasons sit close together: from a winter night to a summer afternoon the average spans only 17°C. Windscreens need scraping on about 16 mornings a year, the nights the air drops below 0°C.
These are the figures of Météo-France’s Lannion station, 11 km north-east.
A year in Saint-Michel-en-Grève at a glance
Each month’s typical high and low in °C, at the Lannion station.
What a year in Saint-Michel-en-Grève feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Lannion.
About 930 mm of rain a year
December is the wettest month and September the driest. About 26 days a year bring 10 mm or more. 6th wettest of 61 towns of 2,500+ in Côtes-d'Armor.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Landivisiau
16 frosts and 9 days of 25°C a year
On about 16 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 9 days a year reach 25°C, and under 1 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Lannion: 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 Lannion
Lannion is 11 km north-east of Saint-Michel-en-Grève. Every figure on this page is the station’s, not a measurement in Saint-Michel-en-Grève itself.
| Station (Météo-France number) | Lannion (22113006) |
| Distance from the town | 11 km north-east |
| Station altitude | 85 m |
| Town altitude (its center) | 75 m |
| Period | 1993–2020 (the station’s own record) |
| Sunshine measured at | Landivisiau, 46 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 Saint-Michel-en-Grève 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 Côtes-d'Armor.
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 |
|---|---|---|---|---|
| Saint-Michel-en-Grève | Lannion | 20.6°C | 4.4°C | 930 mm |
| Plestin-les-Grèves 5.3 km | same station | 20.6°C about the same | 4.4°C about the same | 930 mm |
| Ploubezre 8.6 km | same station | 20.6°C about the same | 4.4°C about the same | 930 mm |
| Lannion 9.5 km | same station | 20.6°C about the same | 4.4°C about the same | 930 mm |
| Trébeurden 9.7 km | same station | 20.6°C about the same | 4.4°C about the same | 930 mm |
| Pleumeur-Bodou 12 km | Ploumanac'H | 20.1°C 0.5°C cooler | 5.7°C 1.3°C milder | 855 mm |
| Trégastel 16 km | Ploumanac'H | 20.1°C 0.5°C cooler | 5.7°C 1.3°C milder | 855 mm |
Saint-Michel-en-Grève weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Lannion station; sunshine at Landivisiau.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.5°C | 4.4°C | 6.9°C | 96 mm | 60 |
| February | 10.0°C | 4.2°C | 7.1°C | 92 mm | 74 |
| March | 11.6°C | 4.9°C | 8.3°C | 66 mm | 110 |
| April | 13.6°C | 6.0°C | 9.8°C | 70 mm | 143 |
| May | 16.3°C | 8.7°C | 12.5°C | 63 mm | 171 |
| June | 18.8°C | 11.4°C | 15.1°C | 55 mm | 183 |
| July | 20.6°C | 13.1°C | 16.9°C | 53 mm | 169 |
| August | 20.9°C | 13.3°C | 17.1°C | 55 mm | 165 |
| September | 19.4°C | 11.6°C | 15.5°C | 53 mm | 154 |
| October | 16.3°C | 9.7°C | 13.0°C | 100 mm | 105 |
| November | 12.4°C | 6.8°C | 9.6°C | 105 mm | 68 |
| December | 10.2°C | 5.0°C | 7.6°C | 123 mm | 62 |
| Year | 15.0°C | 8.3°C | 11.6°C | 930 mm | 1,463 |
Where Saint-Michel-en-Grève’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Lannion, 11 km away: statistics for 1991–2020 (the station’s own years, 1993–2020, 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, Landivisiau, 46 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 Côtes-d'Armor.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Michel-en-Grève’s climate
How warm does Saint-Michel-en-Grève get in summer?
August is the warmest month, with average highs of 20.9°C. About 9 days a year reach 25°C, fewer than almost every mainland French town, and about under 1 reach 30°C.
How cold does Saint-Michel-en-Grève get in winter?
February nights average 4.2°C. The air drops to 0°C or below on about 16 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Saint-Michel-en-Grève get?
About 930 mm a year, more than 82% of mainland French towns. December is the wettest month (123 mm) and September the driest (53 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Landivisiau (46 km away), averages 1,463 hours of sunshine a year.
Are these figures for Saint-Michel-en-Grève itself?
No: they are the normals of the Météo-France station matched to Saint-Michel-en-Grève, Lannion, 11 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 LANNION_AERO, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Michel-en-Grève →
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.