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Weather & Climate in Saint-Sylvain, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Sylvain experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 43°F in January while summers reach 65°F in July. The area gets 230 sunny days per year, above the national average. Annual precipitation totals 35.5 inches. The area receives 1.6 inches of snow annually. The city sits at an elevation of 148 feet.
Temperature
43°F Jan (6°C)
65°F Jul (18°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 230 days/yr |
Geography
| Elevation | 148 ft (45 m) |
| Area | 3.7 sq mi (9.7 km²) |
| Population Density | 332/sq mi |
| Coordinates | 49.0562°N, 0.2176°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
71 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Oct 6, 1999 | 34 km NNW of Fécamp, France | M4.6 | 117 km | 1 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 134 km | 22 km |
| Nov 30, 1994 | 17 km N of Courseulles-sur-Mer, France | M4.1 | 51 km | 6 km |
| Jul 14, 2011 | 62 km SSE of Ventnor, United Kingdom | M3.9 | 124 km | 10 km |
| Jun 24, 1995 | 1 km SE of Andouillé, France | M3.7 | 107 km | 5 km |
| Nov 2, 1997 | 7 km NW of Villers-sur-Mer, France | M3.7 | 37 km | 10 km |
| Sep 23, 2003 | 41 km WNW of Étretat, France | M3.6 | 89 km | 10 km |
| Sep 24, 2003 | 22 km WNW of Cauville-sur-Mer, France | M3.5 | 72 km | 17 km |
| Aug 1, 2007 | 2 km SSE of Blonville-sur-Mer, France | M3.5 | 35 km | 5 km |
| Jul 26, 1993 | 5 km ESE of Villedieu-les-Poêles, France | M3.5 | 74 km | 31 km |
| Dec 24, 1995 | 4 km NW of Noyen-sur-Sarthe, France | M3.5 | 128 km | 18 km |
| Aug 8, 1998 | 1 km SE of Cairon, France | M3.5 | 25 km | 10 km |
| Dec 7, 1998 | 0 km SE of Cherrueix, France | M3.4 | 120 km | 2 km |
| Jun 22, 1997 | 13 km SSE of Saint Helier, Jersey | M3.4 | 131 km | 10 km |
| Aug 29, 2001 | 5 km ENE of Saint-Lô, France | M3.3 | 59 km | 6 km |
| Jun 16, 1998 | 18 km NNW of Yport, France | M3.3 | 96 km | 5 km |
| Aug 29, 1992 | 2 km ESE of Radon, France | M3.2 | 68 km | 10 km |
| Oct 19, 2002 | 9 km NW of Trouville-sur-Mer, France | M3.2 | 45 km | 10 km |
| Feb 22, 1999 | France | M3.1 | 113 km | 4 km |
| Oct 4, 1990 | 3 km ESE of Moulay, France | M3.1 | 92 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 2.9 in | |
| February | 42°F (6°C) | 2.4 in | Coldest |
| March | 46°F (8°C) | 2.2 in | |
| April | 49°F (9°C) | 2.1 in | |
| May | 55°F (13°C) | 2.3 in | |
| June | 60°F (15°C) | 2.0 in | |
| July | 65°F (18°C) | 1.8 in | Warmest |
| August | 64°F (18°C) | 1.8 in | Driest |
| September | 60°F (16°C) | 2.6 in | |
| October | 54°F (12°C) | 3.0 in | |
| November | 47°F (8°C) | 3.1 in | |
| December | 43°F (6°C) | 3.2 in | Wettest |
Saint-Sylvain has a seasonal temperature swing of 23°F / from 42°F in February to 65°F in July. Total annual precipitation is 29.3 inches, with December being the wettest month (3.2") and August the driest (1.8").