Climate averages 1991–2020
Lille weather
in August.
A warm, moderately wet month: one of the warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Lille: daytime highs average 22.5°C and nights cool to about 14.1°C. By daytime temperature it is one of the warmest months of the year.
Expect about 70 mm of rain on roughly 11 days, which makes August a moderately wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 14 h 32 min on an average August day.
The nearest other city in this atlas is Roubaix (11 km away). In August its highs average 22.3°C, about as warm as Lille, with 72 mm of rain.
Among the 57 cities listed in France, Lille ranks 52nd of 57 for the warmest August highs and joint 44th of 57 for the driest August (rainfall, lowest first). The mean August high of those 57 cities is 25.0°C; Lille is 2.5°C cooler than that mean.
From August to September, average highs fall by 3.2°C to 19.3°C, and monthly rainfall falls from 70 mm to 53 mm.
The annual picture
August 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, selected | 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
August in nearby cities
- Roubaix in AugustFrance · 11 kmHigh 22.3°C · Low 14.1°C · 72 mm rain
- Kortrijk in AugustBelgium · 26 kmHigh 22.1°C · Low 14.3°C · 72 mm rain
- Brugge in AugustBelgium · 65 kmHigh 21.2°C · Low 15.2°C · 71 mm rain
- Dunkirk in AugustFrance · 65 kmHigh 21.7°C · Low 14.9°C · 69 mm rain
- Gent in AugustBelgium · 66 kmHigh 22.2°C · Low 14.4°C · 74 mm rain
- Mons in AugustBelgium · 66 kmHigh 22.4°C · Low 14.2°C · 70 mm rain
- Aalst in AugustBelgium · 77 kmHigh 22.4°C · Low 14.4°C · 74 mm rain
- La Louvière in AugustBelgium · 82 kmHigh 22.0°C · Low 13.7°C · 72 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.