Irkutsk weather in May
May in Irkutsk: cool, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Irkutsk · #289 of 604 destinations to visit in May · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Irkutsk climate normals — May
| Daytime high | 16°C / 61°F | 🙂 cool |
|---|---|---|
| Nighttime low | 4°C / 39°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 44 mm / 1.7 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 51% | 🍃 comfortable |
| Dew point | -1°C / 31°F | |
| Sunshine | 11.6 h/day | |
| Daylight | 15.7 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 3.5 cm / 1.4 in | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Irkutsk in May — FAQ
- Is May a good time to visit Irkutsk?
- May in Irkutsk: cool, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Irkutsk on SeasonMap's comfort score (82/100).
- What is the weather like in Irkutsk in May?
- In May, Irkutsk averages a daily high of 16.3°C and a low of 3.7°C, with about 43.7 mm of rain over roughly 9 rainy days.
- What is the air quality in Irkutsk in May?
- Irkutsk has a mean US Air Quality Index of about 44 in May.
- Does it snow in Irkutsk in May?
- Irkutsk sees roughly 3.5 cm of snowfall in May.