Lille weather in July
July in Lille: nice, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Lille · #46 of 897 destinations to visit in July · comfort 94/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Lille in July
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Lille climate normals — July
| Daytime high | 23°C / 73°F | 😎 nice |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Rainfall | 55 mm / 2.2 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 68% | 💧 humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 16 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Lille in July — FAQ
- Is July a good time to visit Lille?
- July in Lille: nice, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Lille on SeasonMap's comfort score (94/100).
- What is the weather like in Lille in July?
- In July, Lille averages a daily high of 22.9°C and a low of 14.1°C, with about 54.9 mm of rain over roughly 9 rainy days.
- What is the air quality in Lille in July?
- Lille has a mean US Air Quality Index of about 40 in July.