Winter nights in Jarnac are milder than in 80% of mainland French towns
Météo-France’s Cognac station, 11 km west: a typical January night drops to 3.3°C and a July afternoon reaches 27.0°C; 772 mm of rain falls in a year. Warm days come often: about 77 a year reach 25°C, more than in 70% of mainland French towns.
A year in Jarnac at a glance
Each month’s typical high and low in °C, at the Cognac station.
What a year in Jarnac feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Cognac.
About 772 mm of rain a year
November is the wettest month and July the driest. About 23 days a year bring 10 mm or more. 23rd wettest of 26 towns of 2,500+ in Charente.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Cognac
29 frosts and 77 days of 25°C a year
On about 29 nights a year the air drops to 0°C or below, and on about 1 days it stays below freezing all day. About 77 days a year reach 25°C, and 24 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Cognac: 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 Cognac
Cognac is 11 km west of Jarnac. Every figure on this page is the station’s, not a measurement in Jarnac itself.
| Station (Météo-France number) | Cognac (16089001) |
| Distance from the town | 11 km west |
| Station altitude | 30 m |
| Town altitude (its center) | 19 m |
| Period | 1991–2020 |
| Nearest station of any kind | 8.7 km |
| Sunshine measured at | the same station |
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 Jarnac 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 Charente.
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 |
|---|---|---|---|---|
| Jarnac | Cognac | 27.0°C | 3.3°C | 772 mm |
| Châteaubernard 11 km | same station | 27.0°C about the same | 3.3°C about the same | 772 mm |
| Cognac 12 km | same station | 27.0°C about the same | 3.3°C about the same | 772 mm |
| Châteauneuf-sur-Charente 14 km | La Couronne | 27.5°C 0.5°C warmer | 2.8°C 0.5°C colder | 845 mm |
| Rouillac 14 km | Tusson | 27.3°C about the same | 2.0°C 1.3°C colder | 822 mm |
| Val-de-Cognac 16 km | same station | 27.0°C about the same | 3.3°C about the same | 772 mm |
| Roullet-Saint-Estèphe 20 km | La Couronne | 27.5°C 0.5°C warmer | 2.8°C 0.5°C colder | 845 mm |
Jarnac weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Cognac station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.7°C | 3.3°C | 6.5°C | 72 mm | 82 |
| February | 11.3°C | 3.0°C | 7.1°C | 51 mm | 116 |
| March | 14.9°C | 5.2°C | 10.1°C | 53 mm | 166 |
| April | 17.7°C | 7.3°C | 12.5°C | 65 mm | 187 |
| May | 21.3°C | 10.9°C | 16.1°C | 62 mm | 221 |
| June | 24.8°C | 14.0°C | 19.4°C | 60 mm | 237 |
| July | 27.0°C | 15.6°C | 21.3°C | 45 mm | 257 |
| August | 27.3°C | 15.4°C | 21.3°C | 53 mm | 250 |
| September | 23.8°C | 12.5°C | 18.1°C | 63 mm | 204 |
| October | 19.1°C | 10.1°C | 14.6°C | 76 mm | 141 |
| November | 13.5°C | 6.1°C | 9.8°C | 88 mm | 97 |
| December | 10.4°C | 3.7°C | 7.1°C | 84 mm | 85 |
| Year | 18.4°C | 8.9°C | 13.7°C | 772 mm | 2,043 |
Where Jarnac’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Cognac, 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, Cognac, 11 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 Charente.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Jarnac’s climate
How warm does Jarnac get in summer?
August is the warmest month, with average highs of 27.3°C. About 77 days a year reach 25°C, more than 70% of mainland French towns, and about 24 reach 30°C.
How cold does Jarnac get in winter?
February nights average 3.0°C. The air drops to 0°C or below on about 29 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Jarnac get?
About 772 mm a year, more than 54% of mainland French towns. November is the wettest month (88 mm) and July the driest (45 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Cognac (11 km away), averages 2,043 hours of sunshine a year.
Are these figures for Jarnac itself?
No: they are the normals of the Météo-France station matched to Jarnac, Cognac, 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 COGNAC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Jarnac →
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.