Climate averages 1991–2020
Cergy-Pontoise weather
in January.
A cold, moderately wet month: the coolest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Cergy-Pontoise: daytime highs average 7.0°C and nights cool to about 2.1°C. By daytime temperature it is the coolest month of the year.
Expect about 55 mm of rain on roughly 11 days, which makes January a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 44 min on an average January day.
The nearest other city in this atlas is Argenteuil (16 km away). In January its highs average 7.1°C, about as warm as Cergy-Pontoise, with 55 mm of rain.
Among the 57 cities listed in France, Cergy-Pontoise ranks joint 36th of 57 for the warmest January highs and joint 10th of 57 for the driest January (rainfall, lowest first). The mean January high of those 57 cities is 8.0°C; Cergy-Pontoise is 1.0°C cooler than that mean.
From January to February, average highs rise by 1.1°C to 8.2°C, and monthly rainfall falls from 55 mm to 48 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Cergy-Pontoise climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 7.0°C2.1°C | 2.1°C | 55 | 11.3 | 8.79 h |
| February | 8.2°C1.9°C | 1.9°C | 48 | 9.9 | 10.110 h |
| March | 11.5°C3.7°C | 3.7°C | 52 | 10.5 | 11.912 h |
| April | 14.8°C5.9°C | 5.9°C | 51 | 11.0 | 13.714 h |
| May | 18.2°C9.5°C | 9.5°C | 64 | 11.3 | 15.315 h |
| June | 21.4°C12.7°C | 12.7°C | 57 | 10.1 | 16.116 h |
| July | 23.6°C14.8°C | 14.8°C | 51 | 9.1 | 15.816 h |
| August | 23.8°C14.8°C | 14.8°C | 58 | 9.2 | 14.414 h |
| September | 20.3°C12.0°C | 12.0°C | 44 | 8.5 | 12.713 h |
| October | 15.8°C9.2°C | 9.2°C | 62 | 11.1 | 10.811 h |
| November | 10.6°C5.4°C | 5.4°C | 60 | 11.3 | 9.29 h |
| December | 7.4°C2.7°C | 2.7°C | 70 | 12.6 | 8.38 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Argenteuil in JanuaryFrance · 16 kmHigh 7.1°C · Low 2.1°C · 55 mm rain
- Boulogne-Billancourt in JanuaryFrance · 26 kmHigh 7.3°C · Low 2.3°C · 52 mm rain
- Versailles in JanuaryFrance · 26 kmHigh 6.6°C · Low 1.7°C · 52 mm rain
- Paris 15 Vaugirard in JanuaryFrance · 27 kmHigh 7.1°C · Low 2.0°C · 52 mm rain
- Paris in JanuaryFrance · 29 kmHigh 7.1°C · Low 1.8°C · 52 mm rain
- Saint-Quentin-en-Yvelines in JanuaryFrance · 30 kmHigh 6.5°C · Low 1.5°C · 53 mm rain
- Paris 20 Ménilmontant in JanuaryFrance · 30 kmHigh 6.7°C · Low 1.5°C · 53 mm rain
- Paris 13 Gobelins in JanuaryFrance · 31 kmHigh 7.0°C · Low 1.8°C · 52 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cergy-Pontoise) is explained once on the Cergy-Pontoise year overview and on the Sources, method and limits page.