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Weather & Climate in Saint-Hélen, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Hélen experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 44°F in January while summers reach 64°F in July. The area gets 239 sunny days per year, above the national average. Annual precipitation totals 37.7 inches. The area receives 2.7 inches of snow annually. The city sits at an elevation of 236 feet.
Temperature
44°F Jan (7°C)
64°F Jul (18°C)
| Annual Average | 54.9°F |
| 2% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 239 days/yr |
Geography
| Elevation | 236 ft (72 m) |
| Area | 1.8 sq mi (4.6 km²) |
| Population Density | 621/sq mi |
| Coordinates | 48.4708°N, 1.9594°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
203 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 | 118 km | 10 km |
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 108 km | 4 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 117 km | 10 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 76 km | 22 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 113 km | 4 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 130 km | 10 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 83 km | 12 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 27 km | 10 km |
| Jun 24, 1995 | 1 km SE of Andouillé, France | M3.7 | 95 km | 5 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 67 km | 2 km |
| Sep 28, 2017 | 1 km WNW of Tresbœuf, France | M3.6 | 71 km | 2 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 59 km | 10 km |
| Jul 26, 1993 | 5 km ESE of Villedieu-les-Poêles, France | M3.5 | 70 km | 31 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 147 km | 10 km |
| Dec 24, 1995 | 4 km NW of Noyen-sur-Sarthe, France | M3.5 | 149 km | 18 km |
| Aug 8, 1998 | 1 km SE of Cairon, France | M3.5 | 140 km | 10 km |
| Mar 21, 2003 | 10 km SE of Groix, France | M3.4 | 146 km | 18 km |
| Feb 9, 2005 | 2 km N of Plouay, France | M3.4 | 118 km | 10 km |
| Dec 7, 1998 | 0 km SE of Cherrueix, France | M3.4 | 24 km | 2 km |
| May 2, 1990 | 2 km SSE of Arzon, France | M3.4 | 125 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 3.0 in | |
| February | 43°F (6°C) | 2.4 in | Coldest |
| March | 47°F (8°C) | 2.3 in | |
| April | 50°F (10°C) | 2.1 in | |
| May | 56°F (13°C) | 2.5 in | |
| June | 61°F (16°C) | 1.9 in | |
| July | 64°F (18°C) | 1.8 in | |
| August | 65°F (18°C) | 1.7 in | Warmest, Driest |
| September | 61°F (16°C) | 2.4 in | |
| October | 55°F (13°C) | 3.1 in | |
| November | 48°F (9°C) | 3.4 in | Wettest |
| December | 44°F (7°C) | 3.2 in |
Saint-Hélen has a seasonal temperature swing of 22°F / from 43°F in February to 65°F in August. Total annual precipitation is 29.8 inches, with November being the wettest month (3.4") and August the driest (1.7").