Few mainland French towns have milder winter nights than Île-d'Houat
High summer brings afternoon highs near 21.8°C. Warm afternoons come less often than in 97% of mainland French towns. November is the wettest month, July the driest. Picnics, hikes and garden evenings come into their own from May to September, with highs of 17–22°C.
These are the figures of Météo-France’s Quiberon station, 17 km north-west.
A year in Île-d'Houat at a glance
Each month’s typical high and low in °C, at the Quiberon station.
What a year in Île-d'Houat feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Quiberon.
About 690 mm of rain a year
November is the wettest month and July the driest. About 19 days a year bring 10 mm or more. 87th wettest of 88 towns of 2,500+ in Morbihan.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Vannes-Séné
7 frosts and 16 days of 25°C a year
On about 7 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 16 days a year reach 25°C, and 2 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Quiberon: 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 Quiberon
Quiberon is 17 km north-west of Île-d'Houat. Every figure on this page is the station’s, not a measurement in Île-d'Houat itself.
| Station (Météo-France number) | Quiberon (56186002) |
| Distance from the town | 17 km north-west |
| Station altitude | 33 m |
| Town altitude (its center) | 28 m |
| Period | 1991–2020 |
| Sunshine measured at | Vannes-Séné, 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 Île-d'Houat 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 |
|---|---|---|---|---|
| Île-d'Houat | Quiberon | 21.8°C | 5.8°C | 690 mm |
| Quiberon 16 km | same station | 21.8°C about the same | 5.8°C about the same | 690 mm |
| Le Palais 16 km | Belle Île-le Talut | 21.3°C 0.5°C cooler | 6.4°C 0.6°C milder | 681 mm |
| Sarzeau 21 km | Sarzeau Sa | 23.2°C 1.4°C warmer | 4.5°C 1.3°C colder | 741 mm |
| Carnac 24 km | Auray | 23.6°C 1.8°C warmer | 4.2°C 1.6°C colder | 969 mm |
| Baden 25 km | Auray | 23.6°C 1.8°C warmer | 4.2°C 1.6°C colder | 969 mm |
| Crach 27 km | Auray | 23.6°C 1.8°C warmer | 4.2°C 1.6°C colder | 969 mm |
Île-d'Houat weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Quiberon station; sunshine at Vannes-Séné.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.7°C | 5.8°C | 7.8°C | 78 mm | 75 |
| February | 9.9°C | 5.5°C | 7.7°C | 60 mm | 107 |
| March | 12.0°C | 6.8°C | 9.4°C | 52 mm | 157 |
| April | 14.3°C | 8.3°C | 11.3°C | 51 mm | 201 |
| May | 17.2°C | 11.0°C | 14.1°C | 42 mm | 222 |
| June | 20.0°C | 13.5°C | 16.7°C | 38 mm | 244 |
| July | 21.8°C | 15.2°C | 18.5°C | 35 mm | 255 |
| August | 21.9°C | 15.5°C | 18.7°C | 40 mm | 225 |
| September | 20.1°C | 13.9°C | 17.0°C | 50 mm | 202 |
| October | 16.4°C | 11.9°C | 14.2°C | 74 mm | 121 |
| November | 13.0°C | 8.9°C | 11.0°C | 87 mm | 93 |
| December | 10.5°C | 6.6°C | 8.6°C | 83 mm | 79 |
| Year | 15.6°C | 10.2°C | 12.9°C | 690 mm | 1,981 |
Where Île-d'Houat’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Quiberon, 17 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, Vannes-Séné, 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 Morbihan.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Île-d'Houat’s climate
How warm does Île-d'Houat get in summer?
August is the warmest month, with average highs of 21.9°C. About 16 days a year reach 25°C, fewer than 97% of mainland French towns, and about 2 reach 30°C.
How cold does Île-d'Houat get in winter?
February nights average 5.5°C. The air drops to 0°C or below on about 7 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Île-d'Houat get?
About 690 mm a year, less than 74% of mainland French towns. November is the wettest month (87 mm) and July the driest (35 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Vannes-Séné (30 km away), averages 1,981 hours of sunshine a year.
Are these figures for Île-d'Houat itself?
No: they are the normals of the Météo-France station matched to Île-d'Houat, Quiberon, 17 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 QUIBERON, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Île-d'Houat →
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.