Lille weather in May
May in Lille: nice, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in Lille · #392 of 897 destinations to visit in May · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Lille in May
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Lille climate normals — May
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Rainfall | 57 mm / 2.2 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 11.6 h/day | |
| Daylight | 15.5 h | |
| Wind | 19 km/h / 11 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Lille in May — FAQ
- Is May a good time to visit Lille?
- May in Lille: nice, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Lille on SeasonMap's comfort score (84/100).
- What is the weather like in Lille in May?
- In May, Lille averages a daily high of 17.5°C and a low of 8.2°C, with about 56.9 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Lille in May?
- Lille has a mean US Air Quality Index of about 49 in May.