Irkutsk weather in December
December in Irkutsk: freezing, dry, with clean air — one of the weakest months to visit.
#12 of 12 months in Irkutsk · #582 of 604 destinations to visit in December · comfort 28/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Irkutsk climate normals — December
| Daytime high | -13°C / 9°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -21°C / -7°F | |
| Feels like (high) | -17°C / 1°F | |
| Rainfall | 9 mm / 0.4 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | -22°C / -7°F | |
| Sunshine | 4.5 h/day | |
| Daylight | 7.8 h | |
| Wind | 11 km/h / 7 mph | |
| Snowfall | 18.3 cm / 7.2 in | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Irkutsk in December — FAQ
- Is December a good time to visit Irkutsk?
- December in Irkutsk: freezing, dry, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Irkutsk on SeasonMap's comfort score (28/100).
- What is the weather like in Irkutsk in December?
- In December, Irkutsk averages a daily high of -13°C and a low of -21.4°C, with about 9.2 mm of rain over roughly 2.4 rainy days.
- What is the air quality in Irkutsk in December?
- Irkutsk has a mean US Air Quality Index of about 31 in December.
- Does it snow in Irkutsk in December?
- Irkutsk sees roughly 18.3 cm of snowfall in December.