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Weather & Climate in Guern, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Guern experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 44°F in January while summers reach 63°F in July / relatively mild seasonal variation. The area gets 246 sunny days per year, above the national average. Annual precipitation totals 39.4 inches. The city sits at an elevation of 476 feet.
Temperature
44°F Jan (7°C)
63°F Jul (17°C)
| Annual Average | 54.7°F |
| 1% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 476 ft (145 m) |
| Area | 7.3 sq mi (19.0 km²) |
| Population Density | 205/sq mi |
| Coordinates | 48.0304°N, 3.0920°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
229 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 | 76 km | 10 km |
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 42 km | 4 km |
| Jun 22, 2005 | 2 km E of La Guérinière, France | M4.3 | 136 km | 10 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 24 km | 10 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 146 km | 22 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 22 km | 4 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 134 km | 12 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 34 km | 10 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 55 km | 6 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 58 km | 16 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 82 km | 10 km |
| Mar 28, 2002 | 36 km WSW of Le Palais, France | M3.8 | 95 km | 15 km |
| Apr 7, 2005 | 18 km WNW of Noirmoutier-en-l'Île, France | M3.8 | 117 km | 0 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 108 km | 10 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 119 km | 2 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 90 km | 19 km |
| Sep 28, 2017 | 1 km WNW of Tresbœuf, France | M3.6 | 115 km | 2 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 76 km | 15 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 50 km | 10 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 90 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 4.5 in | |
| February | 43°F (6°C) | 3.6 in | Coldest |
| March | 46°F (8°C) | 3.2 in | |
| April | 49°F (9°C) | 2.6 in | |
| May | 54°F (12°C) | 2.8 in | |
| June | 59°F (15°C) | 2.1 in | |
| July | 63°F (17°C) | 1.9 in | Warmest, Driest |
| August | 63°F (17°C) | 2.2 in | |
| September | 59°F (15°C) | 3.0 in | |
| October | 54°F (12°C) | 3.8 in | |
| November | 48°F (9°C) | 4.8 in | Wettest |
| December | 44°F (7°C) | 4.5 in |
Guern has a seasonal temperature swing of 20°F / from 43°F in February to 63°F in July. Total annual precipitation is 39.1 inches, with November being the wettest month (4.8") and July the driest (1.9").