Irkutsk Weather & Climate

Russia

Irkutsk sees feels-like daytime highs peak around 26.5°C in July and nighttime lows bottom out near -24.9°C in January. July is the wettest month (~74 mm), while January is the driest (~0 mm). For sunshine, August leads with about 53% clear skies.

Best time to visit Irkutsk

Based on mild feels-like temperatures and low rain chances, the most comfortable months are July, August, and June — expect around 14.626.5°C with roughly 35% chance of rain on a given day in July.

Irkutsk climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January-24.9° / -17°0%0 mm37%9.1 kph
February-22.3° / -12.2°0%0 mm36%9.6 kph
March-14.2° / -3.6°1%1 mm39%11 kph
April-3.2° / 7.1°6%8 mm44%12.6 kph
May4.4° / 16.7°20%28 mm49%12.1 kph
June11° / 23.5°30%53 mm50%10.3 kph
July14.6° / 26.5°35%74 mm51%9 kph
August12.1° / 23°32%71 mm53%9.2 kph
September4.4° / 15.2°20%38 mm52%9.9 kph
October-5.1° / 4.5°7%10 mm45%10 kph
November-15.4° / -6.8°1%1 mm37%9.8 kph
December-22.3° / -15°0%0 mm36%9.4 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

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