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Weather & Climate in Gujan-Mestras, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gujan-Mestras experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 44°F in January while summers reach 68°F in July. The area gets 269 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 37.2 inches. The city sits at an elevation of 16 feet.
Temperature
44°F Jan (6°C)
68°F Jul (20°C)
| Annual Average | 55.3°F |
| 2% above US avg | |
| January Average | 44°F (6°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 269 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 20.9 sq mi (54.0 km²) |
| Population Density | 920/sq mi |
| Coordinates | 44.6360°N, 1.0682°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
171 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 | 145 km | 10 km |
| Mar 20, 2019 | 5 km NNE of Montendre, France | M4.5 | 94 km | 10 km |
| Sep 2, 2013 | 2 km SE of Mont, France | M4.2 | 140 km | 2 km |
| Jun 25, 2001 | 10 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 143 km | 2 km |
| Apr 4, 2005 | 9 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 146 km | 10 km |
| Sep 28, 2010 | 9 km W of Saint-Pierre-d'Oléron, France | M4.2 | 149 km | 2 km |
| Mar 13, 2000 | 7 km ESE of Saint-Palais, France | M4.2 | 149 km | 13 km |
| Feb 23, 2000 | 5 km SW of Mareuil, France | M4.1 | 145 km | 10 km |
| Jun 20, 1992 | 10 km S of Hagetmau, France | M4.1 | 126 km | 10 km |
| Dec 4, 1997 | 8 km SE of Amou, France | M4.1 | 126 km | 5 km |
| Oct 31, 1990 | 6 km ENE of Arthez-de-Béarn, France | M4.1 | 134 km | 10 km |
| Jul 30, 1992 | 4 km N of Arthez-de-Béarn, France | M4.0 | 131 km | 13 km |
| Oct 13, 2003 | 2 km NW of Artix, France | M4.0 | 141 km | 5 km |
| Apr 25, 2016 | 3 km E of Arthez-de-Béarn, France | M3.9 | 136 km | 2 km |
| Jan 14, 1996 | 5 km NNE of Arthez-de-Béarn, France | M3.9 | 130 km | 10 km |
| Aug 24, 1996 | 8 km N of Hondarribia, Spain | M3.9 | 146 km | 10 km |
| Jan 17, 1996 | 7 km NNW of Arthez-de-Béarn, France | M3.9 | 128 km | 10 km |
| Jan 14, 1996 | 7 km N of Arthez-de-Béarn, France | M3.9 | 128 km | 10 km |
| Jan 13, 2004 | 1 km NE of Lagor, France | M3.8 | 142 km | 7 km |
| Apr 4, 2005 | 7 km W of Saint-Pierre-d'Oléron, France | M3.7 | 147 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (6°C) | 3.7 in | Coldest |
| February | 46°F (8°C) | 3.3 in | |
| March | 49°F (9°C) | 2.7 in | |
| April | 53°F (11°C) | 2.9 in | |
| May | 59°F (15°C) | 2.8 in | |
| June | 63°F (17°C) | 2.2 in | |
| July | 68°F (20°C) | 1.7 in | Driest |
| August | 68°F (20°C) | 2.4 in | Warmest |
| September | 64°F (18°C) | 3.4 in | |
| October | 57°F (14°C) | 3.5 in | |
| November | 49°F (10°C) | 4.4 in | Wettest |
| December | 45°F (7°C) | 4.3 in |
Gujan-Mestras has a seasonal temperature swing of 24°F / from 44°F in January to 68°F in August. Total annual precipitation is 37.2 inches, with November being the wettest month (4.4") and July the driest (1.7").