Irkutsk weather in August
August in Irkutsk: nice, rainy, with clean air — one of the best months to visit.
#2 of 12 months in Irkutsk · #52 of 604 destinations to visit in August · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Irkutsk climate normals — August
| Daytime high | 22°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 55°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 88 mm / 3.5 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 14.6 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Irkutsk in August — FAQ
- Is August a good time to visit Irkutsk?
- August in Irkutsk: nice, rainy, with clean air — one of the best months to visit. It ranks #2 of 12 months for Irkutsk on SeasonMap's comfort score (91/100).
- What is the weather like in Irkutsk in August?
- In August, Irkutsk averages a daily high of 21.8°C and a low of 12.7°C, with about 88.1 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Irkutsk in August?
- Irkutsk has a mean US Air Quality Index of about 35 in August.