Saint-Igeaux has some of the coolest summers among mainland French towns
Midwinter brings lows of about 3.1°C. None of the 61 towns of 2,500+ in Côtes-d'Armor gets more rain. Temperatures cover 19°C across the year, low to high. Radiators earn their keep from November to April, the months that average under 10°C.
These are the figures of Météo-France’s Rostrenen station, 15 km south-west.
A year in Saint-Igeaux at a glance
Each month’s typical high and low in °C, at the Rostrenen station.
What a year in Saint-Igeaux feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Rostrenen.
About 1,147 mm of rain a year
December is the wettest month and June the driest. About 36 days a year bring 10 mm or more. The wettest of 61 towns of 2,500+ in Côtes-d'Armor.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Brieuc
22 frosts and 19 days of 25°C a year
On about 22 nights a year the air drops to 0°C or below, and on about 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 Rostrenen: 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 Rostrenen
Rostrenen is 15 km south-west of Saint-Igeaux. Every figure on this page is the station’s, not a measurement in Saint-Igeaux itself.
| Station (Météo-France number) | Rostrenen (22266001) |
| Distance from the town | 15 km south-west |
| Station altitude | 236 m |
| Town altitude (its center) | 183 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Brieuc, 34 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-Igeaux 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-Igeaux | Rostrenen | 21.7°C | 3.1°C | 1,147 mm |
| Guerlédan 13 km | Loudéac | 23.0°C 1.3°C warmer | 2.8°C about the same | 923 mm |
| Rostrenen 16 km | same station | 21.7°C about the same | 3.1°C about the same | 1,147 mm |
| Cléguérec 18 km | Loudéac | 23.0°C 1.3°C warmer | 2.8°C about the same | 923 mm |
| Quintin 20 km | Plœuc-sur-Lie | 22.6°C 0.9°C warmer | 2.6°C 0.5°C colder | 955 mm |
| Plœuc-L'Hermitage 26 km | Plœuc-sur-Lie | 22.6°C 0.9°C warmer | 2.6°C 0.5°C colder | 955 mm |
| Pontivy 26 km | Moréac | 24.0°C 2.3°C warmer | 3.3°C about the same | 1,044 mm |
Saint-Igeaux weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Rostrenen station; sunshine at Saint-Brieuc.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.0°C | 3.1°C | 5.6°C | 135 mm | 65 |
| February | 8.8°C | 2.9°C | 5.8°C | 109 mm | 83 |
| March | 11.3°C | 4.2°C | 7.8°C | 83 mm | 122 |
| April | 13.9°C | 5.5°C | 9.7°C | 81 mm | 163 |
| May | 16.9°C | 8.2°C | 12.6°C | 76 mm | 188 |
| June | 19.8°C | 10.7°C | 15.3°C | 57 mm | 196 |
| July | 21.7°C | 12.5°C | 17.1°C | 67 mm | 198 |
| August | 21.9°C | 12.7°C | 17.3°C | 68 mm | 182 |
| September | 19.4°C | 10.9°C | 15.2°C | 76 mm | 164 |
| October | 15.2°C | 8.7°C | 12.0°C | 120 mm | 110 |
| November | 11.2°C | 5.8°C | 8.5°C | 128 mm | 79 |
| December | 8.6°C | 3.7°C | 6.1°C | 146 mm | 66 |
| Year | 14.7°C | 7.4°C | 11.1°C | 1,147 mm | 1,616 |
Where Saint-Igeaux’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Rostrenen, 15 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, 34 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-Igeaux’s climate
How warm does Saint-Igeaux get in summer?
August is the warmest month, with average highs of 21.9°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 Saint-Igeaux get in winter?
February nights average 2.9°C. The air drops to 0°C or below on about 22 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Saint-Igeaux get?
About 1,147 mm a year, more than 93% of mainland French towns. December is the wettest month (146 mm) and June the driest (57 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Brieuc (34 km away), averages 1,616 hours of sunshine a year.
Are these figures for Saint-Igeaux itself?
No: they are the normals of the Météo-France station matched to Saint-Igeaux, Rostrenen, 15 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 ROSTRENEN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Igeaux →
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.