Few mainland French towns get fewer days of 25 degrees or more than Saint-Laurent
On a normal January night the air cools to about 4.5°C. Only 18°C separates winter nights from summer afternoons. In January, nights here are milder than in 95% of mainland French towns. The heating season runs November to March: each of those months averages under 10°C.
These are the figures of Météo-France’s Pommerit-Jaudy station, 14 km north.
A year in Saint-Laurent at a glance
Each month’s typical high and low in °C, at the Pommerit-Jaudy station.
What a year in Saint-Laurent feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Pommerit-Jaudy.
About 887 mm of rain a year
December is the wettest month and July the driest. About 25 days a year bring 10 mm or more. 14th wettest of 61 towns of 2,500+ in Côtes-d'Armor.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Brieuc
15 frosts and 13 days of 25°C a year
On about 15 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 13 days a year reach 25°C, and 1 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Pommerit-Jaudy: 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 Pommerit-Jaudy
Pommerit-Jaudy is 14 km north of Saint-Laurent. Every figure on this page is the station’s, not a measurement in Saint-Laurent itself.
| Station (Météo-France number) | Pommerit-Jaudy (22247002) |
| Distance from the town | 14 km north |
| Station altitude | 55 m |
| Town altitude (its center) | 99 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Brieuc, 30 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-Laurent 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-Laurent | Pommerit-Jaudy | 21.8°C | 4.5°C | 887 mm |
| Bégard 4.3 km | same station | 21.8°C about the same | 4.5°C about the same | 887 mm |
| Grâces 8.4 km | Lanleff | 22.5°C 0.7°C warmer | 4.0°C 0.5°C colder | 846 mm |
| Pabu 8.6 km | Lanleff | 22.5°C 0.7°C warmer | 4.0°C 0.5°C colder | 846 mm |
| Guingamp 8.8 km | Lanleff | 22.5°C 0.7°C warmer | 4.0°C 0.5°C colder | 846 mm |
| Ploumagoar 12 km | Saint-Brieuc | 21.4°C about the same | 3.8°C 0.7°C colder | 757 mm |
| La Roche-Jaudy 14 km | same station | 21.8°C about the same | 4.5°C about the same | 887 mm |
Saint-Laurent weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Pommerit-Jaudy station; sunshine at Saint-Brieuc.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.7°C | 4.5°C | 7.1°C | 90 mm | 65 |
| February | 10.1°C | 4.2°C | 7.1°C | 82 mm | 83 |
| March | 11.9°C | 5.0°C | 8.5°C | 62 mm | 122 |
| April | 14.0°C | 6.1°C | 10.1°C | 68 mm | 163 |
| May | 16.8°C | 8.8°C | 12.8°C | 59 mm | 188 |
| June | 19.6°C | 11.4°C | 15.5°C | 55 mm | 196 |
| July | 21.8°C | 13.0°C | 17.4°C | 49 mm | 198 |
| August | 22.0°C | 13.2°C | 17.6°C | 53 mm | 182 |
| September | 20.0°C | 11.5°C | 15.7°C | 54 mm | 164 |
| October | 16.4°C | 9.6°C | 13.0°C | 94 mm | 110 |
| November | 12.6°C | 6.9°C | 9.7°C | 104 mm | 79 |
| December | 10.2°C | 5.0°C | 7.6°C | 118 mm | 66 |
| Year | 15.4°C | 8.3°C | 11.8°C | 887 mm | 1,616 |
Where Saint-Laurent’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Pommerit-Jaudy, 14 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, 30 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-Laurent’s climate
How warm does Saint-Laurent get in summer?
August is the warmest month, with average highs of 22.0°C. About 13 days a year reach 25°C, fewer than 98% of mainland French towns, and about 1 reach 30°C.
How cold does Saint-Laurent get in winter?
February nights average 4.2°C. The air drops to 0°C or below on about 15 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Saint-Laurent get?
About 887 mm a year, more than 76% of mainland French towns. December is the wettest month (118 mm) and July the driest (49 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Brieuc (30 km away), averages 1,616 hours of sunshine a year.
Are these figures for Saint-Laurent itself?
No: they are the normals of the Météo-France station matched to Saint-Laurent, Pommerit-Jaudy, 14 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 POMMERIT-JAUDY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Laurent →
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.