Few mainland French towns get more rain than Port-de-Lanne: 1,410 mm a year
January mornings start at about 3.3°C. Expect the heaviest rain in November and the lightest in July. Only about 26 nights a year bring a frost, fewer than in 83% of mainland French towns. Plan for rain on about 141 days a year, the days with 1 mm or more.
These are the figures of Météo-France’s Saint-M Hinx Stna-Inrae station, 9.7 km west.
A year in Port-de-Lanne at a glance
Each month’s typical high and low in °C, at the Saint-M Hinx Stna-Inrae station.
What a year in Port-de-Lanne feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-M Hinx Stna-Inrae.
About 1,410 mm of rain a year
November is the wettest month and July the driest. About 49 days a year bring 10 mm or more. 3rd wettest of 35 towns of 2,500+ in Landes.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Dax
26 frosts and 84 days of 25°C a year
On about 26 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 84 days a year reach 25°C, and 22 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-M Hinx Stna-Inrae: 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-M Hinx Stna-Inrae
Saint-M Hinx Stna-Inrae is 9.7 km west of Port-de-Lanne. Every figure on this page is the station’s, not a measurement in Port-de-Lanne itself.
| Station (Météo-France number) | Saint-M Hinx Stna-Inrae (40272002) |
| Distance from the town | 9.7 km west |
| Station altitude | 37 m |
| Town altitude (its center) | 28 m |
| Period | 1991–2020 |
| Sunshine measured at | Dax, 16 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 Port-de-Lanne 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 Landes.
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 |
|---|---|---|---|---|
| Port-de-Lanne | Saint-M Hinx Stna-Inrae | 26.2°C | 3.3°C | 1,410 mm |
| Peyrehorade 6.1 km | Bidache | 26.9°C 0.7°C warmer | 3.2°C about the same | 1,456 mm |
| Saint-Geours-de-Maremne 14 km | Dax | 26.9°C 0.7°C warmer | 3.3°C about the same | 1,155 mm |
| Saint-Vincent-de-Tyrosse 15 km | same station | 26.2°C about the same | 3.3°C about the same | 1,410 mm |
| Pouillon 15 km | Dax | 26.9°C 0.7°C warmer | 3.3°C about the same | 1,155 mm |
| Urcuit 16 km | same station | 26.2°C about the same | 3.3°C about the same | 1,410 mm |
| Bénesse-Maremne 17 km | Soorts-Hossegor | 26.5°C about the same | 4.0°C 0.7°C milder | 1,182 mm |
Port-de-Lanne weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-M Hinx Stna-Inrae station; sunshine at Dax.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 12.2°C | 3.3°C | 7.8°C | 146 mm | 90 |
| February | 13.3°C | 3.2°C | 8.3°C | 116 mm | 112 |
| March | 16.4°C | 5.4°C | 10.9°C | 99 mm | 163 |
| April | 18.4°C | 7.5°C | 13.0°C | 115 mm | 173 |
| May | 21.5°C | 10.7°C | 16.1°C | 107 mm | 199 |
| June | 24.4°C | 13.9°C | 19.1°C | 86 mm | 208 |
| July | 26.2°C | 15.6°C | 20.9°C | 71 mm | 226 |
| August | 27.0°C | 15.6°C | 21.3°C | 79 mm | 222 |
| September | 24.8°C | 12.8°C | 18.8°C | 110 mm | 197 |
| October | 21.0°C | 10.1°C | 15.6°C | 130 mm | 145 |
| November | 15.5°C | 6.2°C | 10.8°C | 203 mm | 95 |
| December | 12.7°C | 3.9°C | 8.3°C | 149 mm | 84 |
| Year | 19.5°C | 9.0°C | 14.2°C | 1,410 mm | 1,914 |
Where Port-de-Lanne’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-M Hinx Stna-Inrae, 9.7 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, Dax, 16 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 Landes.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Port-de-Lanne’s climate
How warm does Port-de-Lanne get in summer?
August is the warmest month, with average highs of 27.0°C. About 84 days a year reach 25°C, more than 75% of mainland French towns, and about 22 reach 30°C.
How cold does Port-de-Lanne get in winter?
February nights average 3.2°C. The air drops to 0°C or below on about 26 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Port-de-Lanne get?
About 1,410 mm a year, more than 98% of mainland French towns. November is the wettest month (203 mm) and July the driest (71 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Dax (16 km away), averages 1,914 hours of sunshine a year.
Are these figures for Port-de-Lanne itself?
No: they are the normals of the Météo-France station matched to Port-de-Lanne, Saint-M Hinx Stna-Inrae, 9.7 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 ST M HINX STNA-INRAE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Port-de-Lanne →
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.