Ambon has milder winter nights than 88% of mainland French towns
High summer brings afternoon highs near 23.9°C. In July, afternoons here are cooler than in 84% of mainland French towns. Rain peaks in December and eases off in July. Plan time outside from May to October, when highs sit at 18–24°C.
Figures from Météo-France’s Billiers station, 5.7 km south-east.
A year in Ambon at a glance
Each month’s typical high and low in °C, at the Billiers station.
What a year in Ambon feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Billiers.
About 840 mm of rain a year
December is the wettest month and July the driest. About 27 days a year bring 10 mm or more. 80th wettest of 88 towns of 2,500+ in Morbihan.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Vannes-Séné
32 frosts and 38 days of 25°C a year
On about 32 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 38 days a year reach 25°C, and 8 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Billiers: 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 Billiers
Billiers is 5.7 km south-east of Ambon. Every figure on this page is the station’s, not a measurement in Ambon itself.
| Station (Météo-France number) | Billiers (56018001) |
| Distance from the town | 5.7 km south-east |
| Station altitude | 4 m |
| Town altitude (its center) | 11 m |
| Period | 1991–2020 |
| Sunshine measured at | Vannes-Séné, 14 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 Ambon 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 |
|---|---|---|---|---|
| Ambon | Billiers | 23.9°C | 3.7°C | 840 mm |
| Muzillac 5 km | same station | 23.9°C about the same | 3.7°C about the same | 840 mm |
| Surzur 7 km | same station | 23.9°C about the same | 3.7°C about the same | 840 mm |
| Noyal-Muzillac 8.3 km | Questembert | 24.2°C about the same | 3.0°C 0.7°C colder | 1,096 mm |
| Theix-Noyalo 12 km | Saint-Avé | 24.9°C 1°C warmer | 3.6°C about the same | 1,034 mm |
| Sulniac 13 km | Questembert | 24.2°C about the same | 3.0°C 0.7°C colder | 1,096 mm |
| Questembert 15 km | Questembert | 24.2°C about the same | 3.0°C 0.7°C colder | 1,096 mm |
Ambon weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Billiers station; sunshine at Vannes-Séné.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.6°C | 3.7°C | 6.6°C | 94 mm | 75 |
| February | 10.5°C | 3.3°C | 6.9°C | 74 mm | 107 |
| March | 13.2°C | 4.8°C | 9.0°C | 60 mm | 157 |
| April | 15.9°C | 6.2°C | 11.1°C | 61 mm | 201 |
| May | 19.1°C | 9.6°C | 14.4°C | 61 mm | 222 |
| June | 22.1°C | 12.3°C | 17.2°C | 45 mm | 244 |
| July | 23.9°C | 13.9°C | 18.9°C | 42 mm | 255 |
| August | 24.0°C | 13.7°C | 18.8°C | 52 mm | 225 |
| September | 21.7°C | 11.3°C | 16.5°C | 63 mm | 202 |
| October | 17.5°C | 9.4°C | 13.4°C | 87 mm | 121 |
| November | 13.2°C | 6.1°C | 9.6°C | 99 mm | 93 |
| December | 10.3°C | 3.8°C | 7.0°C | 103 mm | 79 |
| Year | 16.7°C | 8.2°C | 12.4°C | 840 mm | 1,981 |
Where Ambon’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Billiers, 5.7 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, 14 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 Ambon’s climate
How warm does Ambon get in summer?
August is the warmest month, with average highs of 24.0°C. About 38 days a year reach 25°C, fewer than 82% of mainland French towns, and about 8 reach 30°C.
How cold does Ambon get in winter?
February nights average 3.3°C. The air drops to 0°C or below on about 32 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Ambon get?
About 840 mm a year, more than 69% of mainland French towns. December is the wettest month (103 mm) and July the driest (42 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Vannes-Séné (14 km away), averages 1,981 hours of sunshine a year.
Are these figures for Ambon itself?
No: they are the normals of the Météo-France station matched to Ambon, Billiers, 5.7 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 BILLIERS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Ambon →
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.