Photo: ackles29 · Public domainPlonéour-Lanvern sits near the top of mainland French towns for mild winters
High summer brings afternoon highs near 23.5°C. The gap between a January night and a July afternoon is 20°C. By July afternoons alone, it runs cooler than 90% of mainland French towns. Warm coats and heating bills mark the months from December to March, when means dip under 10°C.
Figures from Météo-France’s Pont-l'Abbé station, 4.6 km south-east.
A year in Plonéour-Lanvern at a glance
Each month’s typical high and low in °C, at the Pont-l'Abbé station.
What a year in Plonéour-Lanvern feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Pont-l'Abbé.
About 1,012 mm of rain a year
December is the wettest month and June the driest. About 33 days a year bring 10 mm or more. 73rd wettest of 91 towns of 2,500+ in Finistère.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Quimper
21 frosts and 35 days of 25°C a year
On about 21 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 35 days a year reach 25°C, and 6 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Pont-l'Abbé: 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 Pont-l'Abbé
Pont-l'Abbé is 4.6 km south-east of Plonéour-Lanvern. Every figure on this page is the station’s, not a measurement in Plonéour-Lanvern itself.
| Station (Météo-France number) | Pont-l'Abbé (29220002) |
| Distance from the town | 4.6 km south-east |
| Station altitude | 17 m |
| Town altitude (its center) | 44 m |
| Period | 1994–2020 (the station’s own record) |
| Sunshine measured at | Quimper, 12 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 Plonéour-Lanvern 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 Finistère.
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 |
|---|---|---|---|---|
| Plonéour-Lanvern | Pont-l'Abbé | 23.5°C | 4.5°C | 1,012 mm |
| Pont-l'Abbé 5.2 km | same station | 23.5°C about the same | 4.5°C about the same | 1,012 mm |
| Plomeur 7.6 km | same station | 23.5°C about the same | 4.5°C about the same | 1,012 mm |
| Combrit 8.6 km | same station | 23.5°C about the same | 4.5°C about the same | 1,012 mm |
| Plobannalec-Lesconil 10 km | same station | 23.5°C about the same | 4.5°C about the same | 1,012 mm |
| Plomelin 10 km | Plomelin-Inrae | 22.2°C 1.3°C cooler | 4.3°C about the same | 1,150 mm |
| Loctudy 11 km | same station | 23.5°C about the same | 4.5°C about the same | 1,012 mm |
Plonéour-Lanvern weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Pont-l'Abbé station; sunshine at Quimper.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 11.3°C | 4.5°C | 7.9°C | 124 mm | 66 |
| February | 11.9°C | 4.3°C | 8.1°C | 101 mm | 90 |
| March | 14.0°C | 5.1°C | 9.5°C | 74 mm | 133 |
| April | 16.5°C | 6.4°C | 11.5°C | 72 mm | 177 |
| May | 19.4°C | 9.2°C | 14.3°C | 62 mm | 201 |
| June | 22.1°C | 11.9°C | 17.0°C | 48 mm | 209 |
| July | 23.5°C | 13.6°C | 18.6°C | 51 mm | 205 |
| August | 23.8°C | 13.4°C | 18.6°C | 59 mm | 195 |
| September | 22.0°C | 11.5°C | 16.7°C | 59 mm | 175 |
| October | 18.1°C | 10.0°C | 14.1°C | 104 mm | 112 |
| November | 14.4°C | 7.1°C | 10.7°C | 129 mm | 79 |
| December | 11.8°C | 5.2°C | 8.5°C | 130 mm | 67 |
| Year | 17.4°C | 8.5°C | 13.0°C | 1,012 mm | 1,708 |
Where Plonéour-Lanvern’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Pont-l'Abbé, 4.6 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, Quimper, 12 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 Finistère.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Plonéour-Lanvern’s climate
How warm does Plonéour-Lanvern get in summer?
August is the warmest month, with average highs of 23.8°C. About 35 days a year reach 25°C, fewer than 86% of mainland French towns, and about 6 reach 30°C.
How cold does Plonéour-Lanvern get in winter?
February nights average 4.3°C. The air drops to 0°C or below on about 21 nights a year, and about 0 days a year stay below freezing all day.
How much rain does Plonéour-Lanvern get?
About 1,012 mm a year, more than 88% of mainland French towns. December is the wettest month (130 mm) and June the driest (48 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Quimper (12 km away), averages 1,708 hours of sunshine a year.
Are these figures for Plonéour-Lanvern itself?
No: they are the normals of the Météo-France station matched to Plonéour-Lanvern, Pont-l'Abbé, 4.6 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 PONT-L'ABBE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Plonéour-Lanvern →
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.