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Weather & Climate in Saint-Omer, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Omer experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 42°F in January while summers reach 64°F in July. The area gets 217 sunny days per year. Annual precipitation totals 36.5 inches. The area receives 4.0 inches of snow annually. The city sits at an elevation of 33 feet.
Temperature
42°F Jan (5°C)
64°F Jul (18°C)
| Annual Average | 53.3°F |
| 1% below US avg | |
| January Average | 42°F (5°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 217 days/yr |
Geography
| Elevation | 33 ft (10 m) |
| Area | 6.3 sq mi (16.4 km²) |
| Population Density | 2,883/sq mi |
| Coordinates | 50.7483°N, 2.2609°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
37 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 | 95 km | 10 km |
| Jun 20, 1995 | 1 km N of Ghlin, Belgium | M4.3 | 119 km | 20 km |
| Jan 23, 2007 | 57 km ENE of Broadstairs, United Kingdom | M4.1 | 100 km | 10 km |
| Aug 29, 1992 | 4 km SSE of Cousolre, France | M4.1 | 148 km | 18 km |
| Dec 14, 1991 | 3 km SSE of Longfossé, France | M4.0 | 34 km | 10 km |
| Sep 15, 1994 | 38 km NE of Broadstairs, United Kingdom | M3.9 | 103 km | 10 km |
| Jan 27, 1998 | 27 km W of Le Touquet-Paris-Plage, France | M3.8 | 80 km | 2 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 84 km | 12 km |
| Jul 20, 1994 | 2 km N of Rousies, France | M3.5 | 133 km | 5 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 86 km | 4 km |
| Jan 27, 1992 | 6 km SSE of Longfossé, France | M3.5 | 33 km | 10 km |
| Feb 13, 1997 | 26 km W of Le Touquet-Paris-Plage, France | M3.2 | 78 km | 5 km |
| Jul 14, 2008 | 1 km SW of Boussu, Belgium | M3.2 | 113 km | 4 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 119 km | 7 km |
| Feb 27, 2005 | 1 km NW of Libercourt, France | M3.1 | 59 km | 4 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 119 km | 10 km |
| May 4, 1990 | 0 km NE of Coquelles, France | M3.1 | 38 km | 10 km |
| Jul 20, 1994 | 1 km NE of Quévy-le-Petit, Belgium | M3.1 | 127 km | 5 km |
| Jul 2, 2001 | 3 km NNE of Oostduinkerke, Belgium | M3.1 | 54 km | 5 km |
| May 1, 1997 | 21 km W of Fort-Mahon-Plage, France | M3.0 | 85 km | 5 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 | — | 55 km |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | — | 82 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 2.2 in | |
| February | 39°F (4°C) | 1.7 in | Coldest, Driest |
| March | 44°F (7°C) | 1.9 in | |
| April | 48°F (9°C) | 1.8 in | |
| May | 54°F (12°C) | 1.9 in | |
| June | 59°F (15°C) | 2.1 in | |
| July | 64°F (18°C) | 2.1 in | Warmest |
| August | 63°F (17°C) | 2.1 in | |
| September | 59°F (15°C) | 2.6 in | |
| October | 53°F (12°C) | 2.7 in | |
| November | 46°F (8°C) | 3.0 in | Wettest |
| December | 41°F (5°C) | 2.5 in |
Saint-Omer has a seasonal temperature swing of 25°F / from 39°F in February to 64°F in July. Total annual precipitation is 26.5 inches, with November being the wettest month (3.0") and February the driest (1.7").