Irkutsk Weather in August
Thinking of visiting Irkutsk in August? Expect high temperatures reaching 23°C (73°F) during the day, dropping to 12°C (54°F) at night, and be prepared for the wettest month of the year.
Rainfall in Irkutsk in August
Being the wettest month, having an umbrella on standby can help you avoid getting caught in the rain. Past climate data indicates that roughly 14 days will see rain, totalling around 102 mm (4 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Irkutsk in August
Irkutsk in August gets highs of 23°C (73°F) during the day and drops to 12°C (54°F) at night. August is a notable month of the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Irkutsk in August
The city usually sees around 220 hours of sunlight, indicating many sunny days — a great month for sightseeing.Should you favor a climate that's both dry and comfortably warm, June and July typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Russia, check out our Irkutsk's climate page.
Irkutsk Temperature in August
Min Temperature
12°C (54°F)
Max Temperature
23°C (73°F)
Chance of Rain
46%
Precipitation
102 mm (4 in)
Rainy days
14 days
Humidity
77%
Sunshine
220 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Irkutsk typically drop from around 23°C (73°F) at the start of August to approximately 20°C (68°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 12°C (54°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Irkutsk in August
Browse day-by-day weather records for Irkutsk spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Irkutsk historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Irkutsk.
- The hottest August day on record in Irkutsk reached 35°C (95°F) (August 8, 2015).
- The coldest night in August in Irkutsk was on August 28, 2017, with a minimum of -2°C (28°F).
Best Places in Russia in August
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia in August →
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What to Wear in Irkutsk in August
Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Irkutsk in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Russia, check out our Irkutsk's climate page.
Temperature Rainfall Sunshine Humidity
See the full Irkutsk climate overview or explore weather in Russia.
