Climate averages 1991–2020
Roubaix weather
in December.
A cold, moderately wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Roubaix: daytime highs average 6.9°C and nights cool to about 2.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 74 mm of rain on roughly 13 days, which makes December a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 8 h 04 min on an average December day.
The nearest other city in this atlas is Lille (11 km away). In December its highs average 7.0°C, about as warm as Roubaix, with 70 mm of rain.
Among the 57 cities listed in France, Roubaix ranks joint 49th of 57 for the warmest December highs and joint 33rd of 57 for the driest December (rainfall, lowest first). The mean December high of those 57 cities is 8.5°C; Roubaix is 1.6°C cooler than that mean.
From December to January, average highs fall by 0.4°C to 6.5°C, and monthly rainfall falls from 74 mm to 64 mm.
The annual picture
December 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
Roubaix climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.5°C1.6°C | 1.6°C | 64 | 12.1 | 8.59 h |
| February | 7.5°C1.6°C | 1.6°C | 54 | 11.2 | 10.010 h |
| March | 10.7°C3.2°C | 3.2°C | 53 | 11.4 | 11.812 h |
| April | 14.2°C5.3°C | 5.3°C | 47 | 11.1 | 13.814 h |
| May | 17.5°C8.9°C | 8.9°C | 62 | 11.8 | 15.515 h |
| June | 20.3°C11.8°C | 11.8°C | 61 | 10.7 | 16.416 h |
| July | 22.4°C14.1°C | 14.1°C | 65 | 11.2 | 16.016 h |
| August | 22.3°C14.1°C | 14.1°C | 72 | 11.3 | 14.515 h |
| September | 19.2°C11.7°C | 11.7°C | 54 | 10.2 | 12.713 h |
| October | 15.0°C8.7°C | 8.7°C | 62 | 11.2 | 10.811 h |
| November | 10.1°C5.1°C | 5.1°C | 65 | 12.5 | 9.09 h |
| December, selected | 6.9°C2.4°C | 2.4°C | 74 | 12.9 | 8.18 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
December in nearby cities
- Lille in DecemberFrance · 11 kmHigh 7.0°C · Low 2.4°C · 70 mm rain
- Kortrijk in DecemberBelgium · 16 kmHigh 6.9°C · Low 2.6°C · 74 mm rain
- Gent in DecemberBelgium · 55 kmHigh 6.7°C · Low 2.5°C · 71 mm rain
- Brugge in DecemberBelgium · 57 kmHigh 7.0°C · Low 3.4°C · 73 mm rain
- Mons in DecemberBelgium · 61 kmHigh 6.6°C · Low 2.2°C · 78 mm rain
- Aalst in DecemberBelgium · 66 kmHigh 6.7°C · Low 2.5°C · 71 mm rain
- Dunkirk in DecemberFrance · 68 kmHigh 7.4°C · Low 3.4°C · 68 mm rain
- La Louvière in DecemberBelgium · 75 kmHigh 6.1°C · Low 1.7°C · 79 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 Roubaix) is explained once on the Roubaix year overview and on the Sources, method and limits page.
Kortrijk lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.