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Weather & Climate in Olonne-sur-Mer, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Olonne-sur-Mer experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 43°F in January while summers reach 67°F in July. The area gets 282 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 29.7 inches (drier than the 38-inch national average). The city sits at an elevation of 79 feet.
Temperature
43°F Jan (6°C)
67°F Jul (19°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 282 days/yr |
Geography
| Elevation | 79 ft (24 m) |
| Area | 17.6 sq mi (45.6 km²) |
| Population Density | 634/sq mi |
| Coordinates | 46.5352°N, 1.7729°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
312 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Apr 18, 2005 | 1 km SSW of Saint-Pierre-d'Oléron, France | M5.2 | 76 km | 10 km |
| Jun 8, 2001 | France | M5.0 | 62 km | 12 km |
| Jun 16, 2023 | 5 km WNW of Mauzé-sur-le-Mignon, France | M4.8 | 88 km | 5 km |
| Mar 13, 1993 | 1 km WSW of Pénestin, France | M4.6 | 118 km | 10 km |
| Jun 22, 2005 | 2 km E of La Guérinière, France | M4.3 | 58 km | 10 km |
| Jan 12, 1997 | 2 km E of Sainte-Hermine, France | M4.3 | 58 km | 10 km |
| Sep 28, 2010 | 9 km W of Saint-Pierre-d'Oléron, France | M4.2 | 70 km | 2 km |
| Apr 4, 2005 | 9 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 73 km | 10 km |
| Jun 30, 2010 | 1 km ENE of Fontenay-le-Comte, France | M4.2 | 76 km | 3 km |
| Jun 25, 2001 | 10 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 76 km | 2 km |
| Mar 14, 2002 | 2 km WSW of Chantonnay, France | M4.1 | 55 km | 5 km |
| Feb 14, 2003 | 5 km NE of Vix, France | M4.1 | 75 km | 10 km |
| Feb 12, 2018 | 3 km SSE of La Meilleraie-Tillay, France | M4.1 | 75 km | 5 km |
| Jun 21, 2019 | 2 km WSW of Vihiers, France | M4.0 | 114 km | 8 km |
| Jun 17, 2023 | 2 km WSW of Marans, France | M3.9 | 63 km | 5 km |
| Apr 28, 2016 | 6 km WSW of Châtelaillon-Plage, France | M3.9 | 72 km | 10 km |
| Jul 22, 2007 | 1 km SE of Les Lucs-sur-Boulogne, France | M3.9 | 40 km | 5 km |
| Apr 5, 2001 | 2 km ENE of Melle, France | M3.9 | 132 km | 1 km |
| Mar 6, 2013 | 0 km E of Ars-en-Ré, France | M3.9 | 41 km | 2 km |
| Apr 7, 2005 | 18 km WNW of Noirmoutier-en-l'Île, France | M3.8 | 81 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 3.3 in | Coldest |
| February | 44°F (7°C) | 2.8 in | |
| March | 48°F (9°C) | 2.2 in | |
| April | 51°F (11°C) | 2.2 in | |
| May | 58°F (14°C) | 2.2 in | |
| June | 63°F (17°C) | 1.5 in | |
| July | 67°F (19°C) | 1.5 in | |
| August | 67°F (19°C) | 1.4 in | Warmest, Driest |
| September | 63°F (17°C) | 2.4 in | |
| October | 57°F (14°C) | 3.2 in | |
| November | 49°F (10°C) | 3.5 in | Wettest |
| December | 45°F (7°C) | 3.5 in |
Olonne-sur-Mer has a seasonal temperature swing of 24°F / from 43°F in January to 67°F in August. Total annual precipitation is 29.7 inches, with November being the wettest month (3.5") and August the driest (1.4").