Climate averages 1991–2020
Lille weather
in May.
A mild, moderately wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Lille: daytime highs average 17.6°C and nights cool to about 8.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 62 mm of rain on roughly 12 days, which makes May a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 28 min on an average May day.
The nearest other city in this atlas is Roubaix (11 km away). In May its highs average 17.5°C, about as warm as Lille, with 62 mm of rain.
Among the 57 cities listed in France, Lille ranks joint 49th of 57 for the warmest May highs and joint 18th of 57 for the driest May (rainfall, lowest first). The mean May high of those 57 cities is 18.9°C; Lille is 1.3°C cooler than that mean.
From May to June, average highs rise by 2.8°C to 20.4°C, and monthly rainfall falls from 62 mm to 60 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Roubaix in MayFrance · 11 kmHigh 17.5°C · Low 8.9°C · 62 mm rain
- Kortrijk in MayBelgium · 26 kmHigh 17.5°C · Low 9.2°C · 62 mm rain
- Brugge in MayBelgium · 65 kmHigh 16.2°C · Low 9.8°C · 56 mm rain
- Dunkirk in MayFrance · 65 kmHigh 16.6°C · Low 9.5°C · 59 mm rain
- Gent in MayBelgium · 66 kmHigh 17.6°C · Low 9.3°C · 61 mm rain
- Mons in MayBelgium · 66 kmHigh 17.6°C · Low 9.0°C · 65 mm rain
- Aalst in MayBelgium · 77 kmHigh 17.8°C · Low 9.3°C · 60 mm rain
- La Louvière in MayBelgium · 82 kmHigh 17.2°C · Low 8.5°C · 65 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.