Weather & Climate in Cergy, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cergy experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 41°F in January while summers reach 66°F in July. Annual precipitation totals 35.2 inches. The area receives 1.6 inches of snow annually. The city sits at an elevation of 154 feet.
Temperature
41°F Jan (5°C)
66°F Jul (19°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 154 ft (47 m) |
| Area | 4.5 sq mi (11.7 km²) |
| Population Density | 15,757/sq mi |
| Coordinates | 49.0365°N, 2.0761°E |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
11 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Mar 6, 1999 | 2 km W of Vienne-en-Val, France | M3.3 | 138 km | 4 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 83 km | 7 km |
| Feb 22, 1999 | France | M3.1 | 124 km | 4 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 74 km | 10 km |
| Jan 5, 1994 | 0 km SSE of Saint-Martin-de-Boscherville, France | M2.7 | 92 km | 10 km |
| Aug 11, 2002 | 3 km SSW of Rogerville, France | M2.6 | 142 km | 4 km |
| Nov 3, 2000 | 5 km ESE of Ouzouer-le-Marché, France | M2.6 | 133 km | 5 km |
| Dec 13, 1992 | 1 km SW of La Mailleraye-sur-Seine, France | M2.5 | 107 km | 10 km |
| Jan 12, 1999 | 5 km ESE of Ouzouer-le-Marché, France | M2.5 | 131 km | 18 km |
| Jun 11, 1997 | 4 km NE of Voves, France | M2.5 | 87 km | 10 km |
| Jun 22, 1999 | 5 km NNE of Oisemont, France | M2.5 | 109 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.1 in | |
| February | 40°F (4°C) | 1.9 in | Coldest |
| March | 45°F (7°C) | 1.9 in | |
| April | 49°F (9°C) | 1.9 in | |
| May | 56°F (13°C) | 2.4 in | |
| June | 61°F (16°C) | 2.2 in | |
| July | 66°F (19°C) | 2.1 in | Warmest |
| August | 66°F (19°C) | 1.7 in | Driest |
| September | 60°F (15°C) | 2.1 in | |
| October | 53°F (11°C) | 2.4 in | |
| November | 44°F (7°C) | 2.1 in | |
| December | 41°F (5°C) | 2.4 in | Wettest |
Cergy has a seasonal temperature swing of 26°F / from 40°F in February to 66°F in July. Total annual precipitation is 25.3 inches, with December being the wettest month (2.4") and August the driest (1.7").