Climate averages 1991–2020
Lille weather
in December.
A cold, moderately wet month: the 11th warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Lille: daytime highs average 7.0°C and nights cool to about 2.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 70 mm of rain on roughly 13 days, which makes December a moderately wet month (one of the wettest months 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 Roubaix (11 km away). In December its highs average 6.9°C, about as warm as Lille, with 74 mm of rain.
Among the 57 cities listed in France, Lille ranks joint 46th of 57 for the warmest December highs and joint 19th of 57 for the driest December (rainfall, lowest first). The mean December high of those 57 cities is 8.5°C; Lille is 1.5°C cooler than that mean.
From December to January, average highs fall by 0.4°C to 6.6°C, and monthly rainfall falls from 70 mm to 60 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
Lille climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.6°C1.7°C | 1.7°C | 60 | 11.8 | 8.59 h |
| February | 7.7°C1.6°C | 1.6°C | 51 | 10.7 | 10.010 h |
| March | 10.8°C3.2°C | 3.2°C | 51 | 10.7 | 11.812 h |
| April | 14.3°C5.3°C | 5.3°C | 48 | 10.8 | 13.814 h |
| May | 17.6°C8.8°C | 8.8°C | 62 | 11.9 | 15.515 h |
| June | 20.4°C11.8°C | 11.8°C | 60 | 10.4 | 16.416 h |
| July | 22.5°C14.1°C | 14.1°C | 61 | 11.0 | 16.016 h |
| August | 22.5°C14.1°C | 14.1°C | 70 | 11.0 | 14.515 h |
| September | 19.3°C11.6°C | 11.6°C | 53 | 9.9 | 12.713 h |
| October | 15.2°C8.7°C | 8.7°C | 60 | 11.2 | 10.811 h |
| November | 10.3°C5.1°C | 5.1°C | 61 | 12.2 | 9.09 h |
| December, selected | 7.0°C2.4°C | 2.4°C | 70 | 12.5 | 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
- Roubaix in DecemberFrance · 11 kmHigh 6.9°C · Low 2.4°C · 74 mm rain
- Kortrijk in DecemberBelgium · 26 kmHigh 6.9°C · Low 2.6°C · 74 mm rain
- Brugge in DecemberBelgium · 65 kmHigh 7.0°C · Low 3.4°C · 73 mm rain
- Dunkirk in DecemberFrance · 65 kmHigh 7.4°C · Low 3.4°C · 68 mm rain
- Gent in DecemberBelgium · 66 kmHigh 6.7°C · Low 2.5°C · 71 mm rain
- Mons in DecemberBelgium · 66 kmHigh 6.6°C · Low 2.2°C · 78 mm rain
- Aalst in DecemberBelgium · 77 kmHigh 6.7°C · Low 2.5°C · 71 mm rain
- La Louvière in DecemberBelgium · 82 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 Lille) is explained once on the Lille year overview and on the Sources, method and limits page.