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Weather & Climate in Long, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Long experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 42°F in January while summers reach 65°F in July. The area gets 228 sunny days per year, above the national average. Annual precipitation totals 40.0 inches. The area receives 1.1 inches of snow annually. The city sits at an elevation of 125 feet.
Temperature
42°F Jan (6°C)
65°F Jul (18°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 228 days/yr |
Geography
| Elevation | 125 ft (38 m) |
| Area | 3.1 sq mi (8.1 km²) |
| Population Density | 205/sq mi |
| Coordinates | 50.0408°N, 1.9794°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
34 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 | 122 km | 1 km |
| Apr 28, 2007 | 1 km WNW of Lympne, United Kingdom | M4.6 | 135 km | 10 km |
| Jun 20, 1995 | 1 km N of Ghlin, Belgium | M4.3 | 145 km | 20 km |
| Dec 14, 1991 | 3 km SSE of Longfossé, France | M4.0 | 66 km | 10 km |
| Jan 27, 1998 | 27 km W of Le Touquet-Paris-Plage, France | M3.8 | 75 km | 2 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 146 km | 12 km |
| Jan 27, 1992 | 6 km SSE of Longfossé, France | M3.5 | 63 km | 10 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 132 km | 4 km |
| Jul 20, 1994 | 2 km N of Rousies, France | M3.5 | 147 km | 5 km |
| Jun 16, 1998 | 18 km NNW of Yport, France | M3.3 | 130 km | 5 km |
| Feb 13, 1997 | 26 km W of Le Touquet-Paris-Plage, France | M3.2 | 76 km | 5 km |
| Jul 14, 2008 | 1 km SW of Boussu, Belgium | M3.2 | 135 km | 4 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 58 km | 7 km |
| Feb 27, 2005 | 1 km NW of Libercourt, France | M3.1 | 88 km | 4 km |
| Jul 20, 1994 | 1 km NE of Quévy-le-Petit, Belgium | M3.1 | 146 km | 5 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 38 km | 10 km |
| Jul 2, 2001 | 3 km NNE of Oostduinkerke, Belgium | M3.1 | 133 km | 5 km |
| May 4, 1990 | 0 km NE of Coquelles, France | M3.1 | 101 km | 10 km |
| Nov 25, 1998 | 26 km N of Grand-Fort-Philippe, France | M3.0 | 133 km | 10 km |
| May 1, 1997 | 21 km W of Fort-Mahon-Plage, France | M3.0 | 61 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 | — | 113 km |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | — | 129 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.3 in | |
| February | 39°F (4°C) | 1.9 in | Coldest, Driest |
| March | 44°F (7°C) | 2.1 in | |
| April | 47°F (9°C) | 2.0 in | |
| May | 54°F (12°C) | 2.2 in | |
| June | 59°F (15°C) | 2.6 in | |
| July | 65°F (18°C) | 2.1 in | Warmest |
| August | 63°F (17°C) | 2.2 in | |
| September | 59°F (15°C) | 2.8 in | |
| October | 52°F (11°C) | 2.9 in | |
| November | 45°F (7°C) | 3.1 in | Wettest |
| December | 41°F (5°C) | 2.9 in |
Long has a seasonal temperature swing of 26°F / from 39°F in February to 65°F in July. Total annual precipitation is 28.9 inches, with November being the wettest month (3.1") and February the driest (1.9").