Irkutsk weather in January
January in Irkutsk: freezing, dry, with clean air — one of the weakest months to visit.
#11 of 12 months in Irkutsk · #567 of 604 destinations to visit in January · comfort 31/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Irkutsk climate normals — January
| Daytime high | -13°C / 8°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -22°C / -8°F | |
| Feels like (high) | -18°C / 0°F | |
| Rainfall | 9 mm / 0.4 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 74% | 💧 humid |
| Dew point | -22°C / -7°F | |
| Sunshine | 5.5 h/day | |
| Daylight | 8.3 h | |
| Wind | 12 km/h / 8 mph | |
| Snowfall | 19.2 cm / 7.6 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Irkutsk in January — FAQ
- Is January a good time to visit Irkutsk?
- January in Irkutsk: freezing, dry, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Irkutsk on SeasonMap's comfort score (31/100).
- What is the weather like in Irkutsk in January?
- In January, Irkutsk averages a daily high of -13.2°C and a low of -22.5°C, with about 8.9 mm of rain over roughly 3.8 rainy days.
- What is the air quality in Irkutsk in January?
- Irkutsk has a mean US Air Quality Index of about 32 in January.
- Does it snow in Irkutsk in January?
- Irkutsk sees roughly 19.2 cm of snowfall in January.