Sainte-Hélène has milder winter nights than 93% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 23.6°C. Rain peaks in December and eases off in July. Warm afternoons come less often than in 90% of mainland French towns. Keep the boiler serviced for the months from December to March, which average under 10°C.
Figures from Météo-France’s Auray station, 18 km east.
A year in Sainte-Hélène at a glance
Each month’s typical high and low in °C, at the Auray station.
What a year in Sainte-Hélène feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Auray.
About 969 mm of rain a year
December is the wettest month and July the driest. About 31 days a year bring 10 mm or more. 30th wettest of 88 towns of 2,500+ in Morbihan.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lorient-Lann Bihoue
22 frosts and 32 days of 25°C a year
On about 22 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 32 days a year reach 25°C, and 5 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Auray: 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 Auray
Auray is 18 km east of Sainte-Hélène. Every figure on this page is the station’s, not a measurement in Sainte-Hélène itself.
| Station (Météo-France number) | Auray (56007001) |
| Distance from the town | 18 km east |
| Station altitude | 26 m |
| Town altitude (its center) | 8 m |
| Period | 1994–2020 (the station’s own record) |
| Sunshine measured at | Lorient-Lann Bihoue, 18 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 Sainte-Hélène 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 Morbihan.
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 |
|---|---|---|---|---|
| Sainte-Hélène | Auray | 23.6°C | 4.2°C | 969 mm |
| Merlevenez 3.5 km | Lorient-Lann Bihoue | 22.5°C 1.1°C cooler | 4.0°C about the same | 943 mm |
| Plouhinec 4.2 km | Lorient-Lann Bihoue | 22.5°C 1.1°C cooler | 4.0°C about the same | 943 mm |
| Belz 5.3 km | same station | 23.6°C about the same | 4.2°C about the same | 969 mm |
| Kervignac 6.7 km | Lorient-Lann Bihoue | 22.5°C 1.1°C cooler | 4.0°C about the same | 943 mm |
| Locoal-Mendon 7 km | same station | 23.6°C about the same | 4.2°C about the same | 969 mm |
| Landévant 7.9 km | same station | 23.6°C about the same | 4.2°C about the same | 969 mm |
Sainte-Hélène weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Auray station; sunshine at Lorient-Lann Bihoue.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.9°C | 4.2°C | 7.0°C | 110 mm | 71 |
| February | 10.8°C | 4.1°C | 7.4°C | 83 mm | 99 |
| March | 13.2°C | 5.2°C | 9.2°C | 68 mm | 144 |
| April | 15.8°C | 6.8°C | 11.3°C | 70 mm | 191 |
| May | 18.8°C | 9.8°C | 14.3°C | 64 mm | 214 |
| June | 21.7°C | 12.5°C | 17.1°C | 54 mm | 224 |
| July | 23.6°C | 14.1°C | 18.8°C | 51 mm | 232 |
| August | 23.5°C | 13.9°C | 18.7°C | 55 mm | 219 |
| September | 21.4°C | 11.8°C | 16.6°C | 72 mm | 193 |
| October | 17.5°C | 10.1°C | 13.8°C | 107 mm | 120 |
| November | 13.4°C | 6.7°C | 10.0°C | 115 mm | 87 |
| December | 10.6°C | 4.6°C | 7.6°C | 122 mm | 72 |
| Year | 16.7°C | 8.6°C | 12.6°C | 969 mm | 1,865 |
Where Sainte-Hélène’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Auray, 18 km away: statistics for 1991–2020 (the station’s own years, 1994–2020, 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, Lorient-Lann Bihoue, 18 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 Morbihan.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Sainte-Hélène’s climate
How warm does Sainte-Hélène get in summer?
July is the warmest month, with average highs of 23.6°C. About 32 days a year reach 25°C, fewer than 90% of mainland French towns, and about 5 reach 30°C.
How cold does Sainte-Hélène get in winter?
February nights average 4.1°C. The air drops to 0°C or below on about 22 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Sainte-Hélène get?
About 969 mm a year, more than 86% of mainland French towns. December is the wettest month (122 mm) and July the driest (51 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lorient-Lann Bihoue (18 km away), averages 1,865 hours of sunshine a year.
Are these figures for Sainte-Hélène itself?
No: they are the normals of the Météo-France station matched to Sainte-Hélène, Auray, 18 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 AURAY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Sainte-Hélène →
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.