Lyon weather in August
August in Lyon: hot, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Lyon · #141 of 604 destinations to visit in August · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Lyon climate normals — August
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 69 mm / 2.7 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 55% | 🍃 comfortable |
| Dew point | 14°C / 57°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 14.1 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Lyon in August — FAQ
- Is August a good time to visit Lyon?
- August in Lyon: hot, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Lyon on SeasonMap's comfort score (87/100).
- What is the weather like in Lyon in August?
- In August, Lyon averages a daily high of 28.3°C and a low of 17.6°C, with about 69.2 mm of rain over roughly 8.8 rainy days.
- What is the air quality in Lyon in August?
- Lyon has a mean US Air Quality Index of about 42 in August.