More rain falls on La Gacilly than on 83% of mainland French towns: 948 mm a year
Midwinter brings lows of about 3.4°C. Only 22°C separates winter nights from summer afternoons. Its January nights stay gentler than in 83% of mainland French towns. Homes need heating from November to March, the months averaging under 10°C.
These are the figures of Météo-France’s Saint-Jacut-les-Pins station, 11 km south-west.
A year in La Gacilly at a glance
Each month’s typical high and low in °C, at the Saint-Jacut-les-Pins station.
What a year in La Gacilly feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Jacut-les-Pins.
About 948 mm of rain a year
December is the wettest month and July the driest. About 30 days a year bring 10 mm or more. 47th wettest of 88 towns of 2,500+ in Morbihan.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Rennes-Saint-Jacques
32 frosts and 46 days of 25°C a year
On about 32 nights a year the air drops to 0°C or below, and on about 1 days it stays below freezing all day. About 46 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Jacut-les-Pins: 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 Saint-Jacut-les-Pins
Saint-Jacut-les-Pins is 11 km south-west of La Gacilly. Every figure on this page is the station’s, not a measurement in La Gacilly itself.
| Station (Météo-France number) | Saint-Jacut-les-Pins (56221001) |
| Distance from the town | 11 km south-west |
| Station altitude | 52 m |
| Town altitude (its center) | 56 m |
| Period | 1991–2020 |
| Sunshine measured at | Rennes-Saint-Jacques, 45 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 La Gacilly 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 |
|---|---|---|---|---|
| La Gacilly | Saint-Jacut-les-Pins | 24.8°C | 3.4°C | 948 mm |
| Carentoir 6.3 km | Guer | 25.4°C 0.6°C warmer | 2.9°C 0.5°C colder | 873 mm |
| Bains-sur-Oust 7.8 km | same station | 24.8°C about the same | 3.4°C about the same | 948 mm |
| Redon 12 km | same station | 24.8°C about the same | 3.4°C about the same | 948 mm |
| Allaire 14 km | same station | 24.8°C about the same | 3.4°C about the same | 948 mm |
| Saint-Nicolas-de-Redon 15 km | same station | 24.8°C about the same | 3.4°C about the same | 948 mm |
| Pipriac 15 km | La Noë-Blanche | 25.0°C about the same | 3.2°C about the same | 781 mm |
La Gacilly weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Jacut-les-Pins station; sunshine at Rennes-Saint-Jacques.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.4°C | 3.4°C | 6.4°C | 114 mm | 68 |
| February | 10.4°C | 3.0°C | 6.7°C | 83 mm | 93 |
| March | 13.3°C | 4.4°C | 8.9°C | 67 mm | 134 |
| April | 16.1°C | 5.9°C | 11.0°C | 71 mm | 174 |
| May | 19.3°C | 9.1°C | 14.2°C | 63 mm | 202 |
| June | 22.6°C | 11.8°C | 17.2°C | 52 mm | 213 |
| July | 24.8°C | 13.4°C | 19.1°C | 48 mm | 220 |
| August | 24.9°C | 13.4°C | 19.1°C | 53 mm | 207 |
| September | 22.1°C | 11.0°C | 16.5°C | 69 mm | 181 |
| October | 17.2°C | 9.0°C | 13.1°C | 98 mm | 117 |
| November | 12.8°C | 5.7°C | 9.3°C | 106 mm | 84 |
| December | 9.8°C | 3.7°C | 6.8°C | 123 mm | 69 |
| Year | 16.9°C | 7.8°C | 12.4°C | 948 mm | 1,762 |
Where La Gacilly’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Jacut-les-Pins, 11 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, Rennes-Saint-Jacques, 45 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 La Gacilly’s climate
How warm does La Gacilly get in summer?
August is the warmest month, with average highs of 24.9°C. About 46 days a year reach 25°C, fewer than 74% of mainland French towns, and about 10 reach 30°C.
How cold does La Gacilly get in winter?
February nights average 3.0°C. The air drops to 0°C or below on about 32 nights a year, and about 1 days a year stay below freezing all day.
How much rain does La Gacilly get?
About 948 mm a year, more than 83% of mainland French towns. December is the wettest month (123 mm) and July the driest (48 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Rennes-Saint-Jacques (45 km away), averages 1,762 hours of sunshine a year.
Are these figures for La Gacilly itself?
No: they are the normals of the Météo-France station matched to La Gacilly, Saint-Jacut-les-Pins, 11 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 ST-JACUT-LES-PINS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for La Gacilly →
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.