Year-round weather and climate in Irkutsk, Russia
Average temperatures in Irkutsk run from an average low of -23°C-9°F in January up to an average high of 25°C77°F in July. January is the driest month at 3 rainy days; July the wettest at 14. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 624K
- Currency
- RUB
- Language
- Russian
- Time zone
- Irkutsk
Best time to visit
The most pleasant weather falls in June, July, and August, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Moderate Showers: Rainfall is standard and manageable. A compact travel umbrella or light rain jacket will easily get you through any wet days.
Day-to-night swing
The Daypack Trap: Beware the "noon illusion". In months like May, crisp sunny days drop off a cliff by 14°C25°F at sunset. Always carry an evening layer.
Seasonality Profile
True Four Seasons: Dramatic contrasts. Freezing winters, transitional shoulders, and blazing summers.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Irkutsk, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Jan is typically driest at 3 days (8mm); Jul the wettest at 14 days (95mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | -13°C / 8°F | -23°C / -9°F | 6h | 3 | 8mm |
| Feb | -11°C / 12°F | -22°C / -7°F | 8h | 3 | 9mm |
| Mar | 1°C / 34°F | -11°C / 12°F | 9h | 4 | 11mm |
| Apr | 9°C / 49°F | -3°C / 26°F | 10h | 9 | 38mm |
| May | 18°C / 64°F | 4°C / 39°F | 11h | 8 | 36mm |
| Jun | 23°C / 74°F | 11°C / 52°F | 12h | 10 | 71mm |
| Jul | 25°C / 77°F | 15°C / 58°F | 11h | 14 | 95mm |
| Aug | 23°C / 74°F | 14°C / 57°F | 10h | 12 | 91mm |
| Sep | 16°C / 61°F | 7°C / 45°F | 9h | 10 | 57mm |
| Oct | 7°C / 45°F | -1°C / 30°F | 8h | 6 | 25mm |
| Nov | -2°C / 29°F | -9°C / 15°F | 6h | 5 | 24mm |
| Dec | -13°C / 9°F | -21°C / -6°F | 5h | 5 | 13mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Irkutsk?
The most sunshine in Irkutsk comes around June, averaging 12 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Irkutsk?
Your packing list depends entirely on when you travel. Temperatures in Irkutsk swing from an average low of -23°C-9°F in January up to 25°C77°F in July. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Irkutsk?
Irkutsk gets rain on about 89 days out of the year. The wettest month is July. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Irkutsk with Packola.
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