Pornic sits near the top of mainland French towns for mild winters
High summer brings afternoon highs near 23.3°C. November is the wettest month, July the driest. Warm afternoons come less often than in 93% of mainland French towns. Keep the boiler serviced for the months from December to March, which average under 10°C.
Figures from Météo-France’s Noirmoutier en station, 18 km south-west.
A year in Pornic at a glance
Each month’s typical high and low in °C, at the Noirmoutier en station.
What a year in Pornic feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Noirmoutier en.
About 704 mm of rain a year
November is the wettest month and July the driest. About 21 days a year bring 10 mm or more. 123rd wettest of 133 towns of 2,500+ in Loire-Atlantique.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Nazaire-Montoir
10 frosts and 28 days of 25°C a year
On about 10 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 28 days a year reach 25°C, and 6 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Noirmoutier en: 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 Noirmoutier en
Noirmoutier en is 18 km south-west of Pornic. Every figure on this page is the station’s, not a measurement in Pornic itself.
| Station (Météo-France number) | Noirmoutier en (85163001) |
| Distance from the town | 18 km south-west |
| Station altitude | 3 m |
| Town altitude (its center) | 15 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Nazaire-Montoir, 22 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 Pornic 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 Loire-Atlantique.
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 |
|---|---|---|---|---|
| Pornic | Noirmoutier en | 23.3°C | 5.2°C | 704 mm |
| La Bernerie-en-Retz 5.7 km | same station | 23.3°C about the same | 5.2°C about the same | 704 mm |
| Saint-Michel-Chef-Chef 7.6 km | Pte de Chemoulin | 22.7°C 0.6°C cooler | 5.0°C about the same | 595 mm |
| Chauvé 7.9 km | Saint-Nazaire-Montoir | 24.4°C 1.1°C warmer | 3.7°C 1.5°C colder | 792 mm |
| La Plaine-sur-Mer 8.2 km | Pte de Chemoulin | 22.7°C 0.6°C cooler | 5.0°C about the same | 595 mm |
| Saint-Père-en-Retz 11 km | Saint-Nazaire-Montoir | 24.4°C 1.1°C warmer | 3.7°C 1.5°C colder | 792 mm |
| Chaumes-en-Retz 12 km | Saint-Meme-le-Tenu | 25.0°C 1.7°C warmer | 3.5°C 1.7°C colder | 866 mm |
Pornic weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Noirmoutier en station; sunshine at Saint-Nazaire-Montoir.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.6°C | 5.2°C | 7.4°C | 75 mm | 73 |
| February | 10.2°C | 5.0°C | 7.6°C | 59 mm | 102 |
| March | 12.8°C | 6.8°C | 9.8°C | 51 mm | 149 |
| April | 15.3°C | 8.5°C | 11.9°C | 52 mm | 175 |
| May | 18.6°C | 11.6°C | 15.1°C | 49 mm | 207 |
| June | 21.6°C | 14.3°C | 17.9°C | 37 mm | 233 |
| July | 23.3°C | 15.9°C | 19.6°C | 37 mm | 233 |
| August | 23.5°C | 16.2°C | 19.8°C | 39 mm | 234 |
| September | 21.4°C | 14.2°C | 17.8°C | 54 mm | 198 |
| October | 17.4°C | 11.9°C | 14.6°C | 81 mm | 128 |
| November | 13.2°C | 8.4°C | 10.8°C | 87 mm | 90 |
| December | 10.4°C | 5.9°C | 8.1°C | 84 mm | 72 |
| Year | 16.4°C | 10.3°C | 13.4°C | 704 mm | 1,893 |
Where Pornic’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Noirmoutier en, 18 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, Saint-Nazaire-Montoir, 22 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 Loire-Atlantique.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Pornic’s climate
How warm does Pornic get in summer?
August is the warmest month, with average highs of 23.5°C. About 28 days a year reach 25°C, fewer than 93% of mainland French towns, and about 6 reach 30°C.
How cold does Pornic get in winter?
February nights average 5.0°C. The air drops to 0°C or below on about 10 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Pornic get?
About 704 mm a year, less than 66% of mainland French towns. November is the wettest month (87 mm) and July the driest (37 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Nazaire-Montoir (22 km away), averages 1,893 hours of sunshine a year.
Are these figures for Pornic itself?
No: they are the normals of the Météo-France station matched to Pornic, Noirmoutier en, 18 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 NOIRMOUTIER EN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Pornic →
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.