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Weather & Climate in Groix, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Groix experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 45°F in January while summers reach 64°F in July / relatively mild seasonal variation. The area gets 271 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 36.0 inches. The city sits at an elevation of 128 feet.
Temperature
45°F Jan (7°C)
64°F Jul (18°C)
| Annual Average | 54.1°F |
| 0% below US avg | |
| January Average | 45°F (7°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 271 days/yr |
Geography
| Elevation | 128 ft (39 m) |
| Area | 5.7 sq mi (14.8 km²) |
| Population Density | 425/sq mi |
| Coordinates | 47.6389°N, 3.4543°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
217 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Mar 13, 1993 | 1 km WSW of Pénestin, France | M4.6 | 74 km | 10 km |
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 47 km | 4 km |
| Jun 22, 2005 | 2 km E of La Guérinière, France | M4.3 | 120 km | 10 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 28 km | 10 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 32 km | 4 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 35 km | 10 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 40 km | 6 km |
| Mar 28, 2002 | 36 km WSW of Le Palais, France | M3.8 | 45 km | 15 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 7 km | 16 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 132 km | 10 km |
| Apr 7, 2005 | 18 km WNW of Noirmoutier-en-l'Île, France | M3.8 | 96 km | 0 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 110 km | 10 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 44 km | 19 km |
| Sep 28, 2017 | 1 km WNW of Tresbœuf, France | M3.6 | 144 km | 2 km |
| Sep 17, 1996 | 3 km NW of Soullans, France | M3.6 | 146 km | 5 km |
| Aug 24, 1996 | 59 km SSW of Guilvinec, France | M3.5 | 89 km | 10 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 120 km | 10 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 92 km | 2 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 28 km | 10 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 56 km | 15 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 4.4 in | Coldest |
| February | 45°F (7°C) | 3.5 in | |
| March | 48°F (9°C) | 2.9 in | |
| April | 51°F (10°C) | 2.3 in | |
| May | 56°F (13°C) | 2.4 in | |
| June | 61°F (16°C) | 1.8 in | |
| July | 64°F (18°C) | 1.5 in | Driest |
| August | 65°F (18°C) | 1.9 in | Warmest |
| September | 61°F (16°C) | 2.7 in | |
| October | 56°F (13°C) | 3.4 in | |
| November | 50°F (10°C) | 4.7 in | Wettest |
| December | 47°F (8°C) | 4.4 in |
Groix has a seasonal temperature swing of 20°F / from 45°F in January to 65°F in August. Total annual precipitation is 36.0 inches, with November being the wettest month (4.7") and July the driest (1.5").