Trévou-Tréguignec sits near the bottom of mainland French towns for warm days
The coldest hours of a January night bottom out at 5.7°C on average. Only about 4 nights a year bring a frost, fewer than in 98% of mainland French towns. From frosty January to warm July, readings climb 15°C. Waterproofs come out on about 143 days a year, each with 1 mm of rain or more.
Figures from Météo-France’s Ploumanac'H station, 9.3 km west.
A year in Trévou-Tréguignec at a glance
Each month’s typical high and low in °C, at the Ploumanac'H station.
What a year in Trévou-Tréguignec feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Ploumanac'H.
About 855 mm of rain a year
December is the wettest month and July the driest. About 23 days a year bring 10 mm or more. 17th wettest of 61 towns of 2,500+ in Côtes-d'Armor.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Brieuc
4 frosts and 4 days of 25°C a year
On about 4 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 4 days a year reach 25°C, and under 1 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Ploumanac'H: 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 Ploumanac'H
Ploumanac'H is 9.3 km west of Trévou-Tréguignec. Every figure on this page is the station’s, not a measurement in Trévou-Tréguignec itself.
| Station (Météo-France number) | Ploumanac'H (22168001) |
| Distance from the town | 9.3 km west |
| Station altitude | 55 m |
| Town altitude (its center) | 25 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Brieuc, 48 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 Trévou-Tréguignec 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 |
|---|---|---|---|---|
| Trévou-Tréguignec | Ploumanac'H | 20.1°C | 5.7°C | 855 mm |
| Penvénan 3.4 km | Pommerit-Jaudy | 21.8°C 1.7°C warmer | 4.5°C 1.2°C colder | 887 mm |
| Louannec 5.8 km | same station | 20.1°C about the same | 5.7°C about the same | 855 mm |
| Perros-Guirec 8.2 km | same station | 20.1°C about the same | 5.7°C about the same | 855 mm |
| La Roche-Jaudy 12 km | Pommerit-Jaudy | 21.8°C 1.7°C warmer | 4.5°C 1.2°C colder | 887 mm |
| Trégastel 12 km | same station | 20.1°C about the same | 5.7°C about the same | 855 mm |
| Lannion 12 km | Lannion | 20.6°C 0.5°C warmer | 4.4°C 1.3°C colder | 930 mm |
Trévou-Tréguignec weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Ploumanac'H station; sunshine at Saint-Brieuc.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.9°C | 5.7°C | 7.8°C | 89 mm | 65 |
| February | 10.2°C | 5.4°C | 7.8°C | 79 mm | 83 |
| March | 11.7°C | 6.5°C | 9.1°C | 59 mm | 122 |
| April | 13.3°C | 7.6°C | 10.5°C | 65 mm | 163 |
| May | 15.7°C | 9.9°C | 12.8°C | 58 mm | 188 |
| June | 18.2°C | 12.3°C | 15.2°C | 50 mm | 196 |
| July | 20.1°C | 14.1°C | 17.1°C | 47 mm | 198 |
| August | 20.6°C | 14.5°C | 17.6°C | 54 mm | 182 |
| September | 19.2°C | 13.4°C | 16.3°C | 53 mm | 164 |
| October | 16.3°C | 11.2°C | 13.7°C | 94 mm | 110 |
| November | 12.8°C | 8.4°C | 10.6°C | 98 mm | 79 |
| December | 10.6°C | 6.3°C | 8.5°C | 110 mm | 66 |
| Year | 14.9°C | 9.6°C | 12.3°C | 855 mm | 1,616 |
Where Trévou-Tréguignec’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Ploumanac'H, 9.3 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, Saint-Brieuc, 48 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 Trévou-Tréguignec’s climate
How warm does Trévou-Tréguignec get in summer?
August is the warmest month, with average highs of 20.6°C. About 4 days a year reach 25°C, fewer than almost every mainland French town, and about under 1 reach 30°C.
How cold does Trévou-Tréguignec get in winter?
February nights average 5.4°C. The air drops to 0°C or below on about 4 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Trévou-Tréguignec get?
About 855 mm a year, more than 71% of mainland French towns. December is the wettest month (110 mm) and July the driest (47 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Brieuc (48 km away), averages 1,616 hours of sunshine a year.
Are these figures for Trévou-Tréguignec itself?
No: they are the normals of the Météo-France station matched to Trévou-Tréguignec, Ploumanac'H, 9.3 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 PLOUMANAC'H, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Trévou-Tréguignec →
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.