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Weather & Climate in Saint-Sylvestre-Cappel, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Sylvestre-Cappel experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 43°F in January while summers reach 65°F in July. The area gets 225 sunny days per year, above the national average. Annual precipitation totals 39.9 inches. The area receives 5.7 inches of snow annually. The city sits at an elevation of 161 feet.
Temperature
43°F Jan (6°C)
65°F Jul (18°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 43°F (6°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 225 days/yr |
Geography
| Elevation | 161 ft (49 m) |
| Area | 4.9 sq mi (12.6 km²) |
| Population Density | 228/sq mi |
| Coordinates | 50.7763°N, 2.5562°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
46 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Apr 28, 2007 | 1 km WNW of Lympne, United Kingdom | M4.6 | 114 km | 10 km |
| Jun 20, 1995 | 1 km N of Ghlin, Belgium | M4.3 | 100 km | 20 km |
| Jan 23, 2007 | 57 km ENE of Broadstairs, United Kingdom | M4.1 | 101 km | 10 km |
| Aug 29, 1992 | 4 km SSE of Cousolre, France | M4.1 | 131 km | 18 km |
| Dec 14, 1991 | 3 km SSE of Longfossé, France | M4.0 | 54 km | 10 km |
| Aug 26, 1992 | 2 km WSW of Rance, Belgium | M3.9 | 140 km | 10 km |
| Sep 15, 1994 | 38 km NE of Broadstairs, United Kingdom | M3.9 | 109 km | 10 km |
| Jul 13, 2008 | 0 km ESE of Court-Saint-Étienne, Belgium | M3.8 | 143 km | 4 km |
| Jan 27, 1998 | 27 km W of Le Touquet-Paris-Plage, France | M3.8 | 101 km | 2 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 98 km | 12 km |
| Jul 20, 1994 | 2 km N of Rousies, France | M3.5 | 115 km | 5 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 104 km | 4 km |
| Jan 27, 1992 | 6 km SSE of Longfossé, France | M3.5 | 54 km | 10 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 120 km | 7 km |
| Jul 14, 2008 | 1 km SW of Boussu, Belgium | M3.2 | 95 km | 4 km |
| Feb 13, 1997 | 26 km W of Le Touquet-Paris-Plage, France | M3.2 | 99 km | 5 km |
| May 4, 1990 | 0 km NE of Coquelles, France | M3.1 | 56 km | 10 km |
| Jul 20, 1994 | 1 km NE of Quévy-le-Petit, Belgium | M3.1 | 108 km | 5 km |
| Jul 2, 2001 | 3 km NNE of Oostduinkerke, Belgium | M3.1 | 42 km | 5 km |
| Feb 27, 2005 | 1 km NW of Libercourt, France | M3.1 | 44 km | 4 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1858 | NORTH SEA | Unknown | 6.0 m | — | 72 km |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | — | 99 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 2.2 in | |
| February | 39°F (4°C) | 1.7 in | Coldest, Driest |
| March | 44°F (6°C) | 2.1 in | |
| April | 47°F (9°C) | 1.9 in | |
| May | 54°F (12°C) | 2.1 in | |
| June | 59°F (15°C) | 2.4 in | |
| July | 65°F (18°C) | 2.2 in | Warmest |
| August | 63°F (17°C) | 2.1 in | |
| September | 59°F (15°C) | 2.7 in | |
| October | 52°F (11°C) | 2.7 in | |
| November | 45°F (7°C) | 3.0 in | Wettest |
| December | 40°F (5°C) | 2.6 in |
Saint-Sylvestre-Cappel has a seasonal temperature swing of 26°F / from 39°F in February to 65°F in July. Total annual precipitation is 27.7 inches, with November being the wettest month (3.0") and February the driest (1.7").