Cergy in december: average Weather, Temperature and Climate
Weather in Cergy in december 2026
The weather in Cergy in the month of december comes from statistical datas on the last years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 64cm
Weather at 6am
41°F
Moderate rain at times
21% of time
21%
19%
16%
Weather at 12pm
47°F
Clear/Sunny
26% of time
26%
19%
17%
Weather at 6pm
43°F
Clear/Sunny
26% of time
23%
17%
14%
Weather at 3am
41°F
23%
20%
18%
17%
Evolution of daily average temperature and precipitation in Cergy in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Cergy in december.
The climate of Cergy in december is very bad
The weather in december in Cergy is wet (with 4.3in of rainfall over 8 days). It should be noted a worsening from the previous month since in november there is an average of 3.5in of precipitation over 6 days.
The climate is quite more than very fresh in this city december. Bring warm clothes! The high seasonal norm is 47°F. In the morning the temperature drops to 41°F. Thus, the mean temperature average in december in Cergy is 43°F. Note that seasonal normals are in contrast with those observed in Cergy in december with a maximum record of 61°F in 2018 and a minimum record of 22°F in 2009. You need to prepare to have about 5 days with temperatures under 32°F, or 16% of the month.
Day length in Cergy in december is 08:15. Sunrise is at 08:39 and sets at 16:54.
Seasonal average climate and temperature of Cergy in december
Check below seasonal norms These datas are set from the weather statements of the last years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 43°F | ||||
| Highest temperature | 47°F | ||||
| Lowest temperature | 41°F | ||||
| Highest record temperature | 61°F (2018) | ||||
| Lowest record temperature | 22°F (2009) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 5 day(s) (16%) | ||||
| Wind | |||||
| Wind speed | 20km/h | ||||
| Wind temperature | 34°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.3in | ||||
| Number of days with rainfall | 8 day(s) (25%) | ||||
| Record daily rainfall | 1.4in (2011) | ||||
| Snowfall | 64cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.35km | ||||
| Cloud cover | 60% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 6 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:39 | ||||
| Time of sunset | 16:54 | ||||
| Length of day | 08:15 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Cergy in december 2025:
40°F to 47°F
45°F to 49°F
41°F to 49°F
43°F to 49°F
38°F to 47°F
49°F to 54°F
50°F to 58°F
56°F to 58°F
50°F to 59°F
52°F to 58°F
45°F to 52°F
50°F to 54°F
45°F to 52°F
45°F to 52°F
45°F to 54°F
50°F to 54°F
49°F to 52°F
49°F to 56°F
50°F to 54°F
45°F to 47°F
47°F to 50°F
49°F to 52°F
43°F to 49°F
36°F to 38°F
31°F to 38°F
29°F to 40°F
32°F to 41°F
34°F to 41°F
31°F to 41°F
40°F to 43°F
31°F to 41°F
Map: other cities in the parisian region in december
Cities near Cergy:
| Saint-Germain-en-Laye in december | very bad weather |
| Argenteuil in december | very bad weather |
| Chatou in december | very bad weather |
| Nanterre in december | very bad weather |
| Montmorency in december | very bad weather |
| Saint-Denis in december | very bad weather |
| Mantes-la-Jolie in december | very bad weather |
| Boulogne-Billancourt in december | very bad weather |
| Versailles (Yvelines) in december | very bad weather |
| Chaville in december | very bad weather |
| Paris in december | very bad weather |
| Chatenay-Malabry in december | very bad weather |
Click over cities on the map for information about the weather in december.
Cergy
perfect weather
good
tolerable
bad
very bad
Weather data for Cergy in december:
Weather data for Cergy for december are derived from an average of the weather forecast since 2009 in Cergy. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cergy can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Cergy.