Irkutsk Oblast weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Irkutsk Oblast, Russia. Like most weather services, we show Irkutsk Oblast at one spot: Irkutsk, its largest city. At 7:45 AM local time it was cloudy and -6°C (21°F). Light rain for 5 of the next 24 hours (under 1 mm/h, 1.0 mm total) — cloudy, but fine to be out. Best months for weather: May–Aug.
Current conditions
- Clouds
- 95%
- Chance of rain
- 6%
- Rain
- 0.0 mm/h
Hourly Forecast
Light rain for 5 of the next 24 hours (under 1 mm/h, 1.0 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season May–AugOff season Oct–Apr
About Irkutsk weather
Is it raining in Irkutsk right now?
No. It’s cloudy and -6° right now. Light rain for 5 of the next 24 hours (under 1 mm/h, 1.0 mm total) — cloudy, but fine to be out.
What’s the weather like in Irkutsk this week?
Over the next 7 days, expect highs of -10–3° and lows of -17–-6°. Rain is likely on 3 of 7 days (Sunday, Tuesday, Wednesday). The driest day looks like Thursday.
Has it been raining in Irkutsk lately?
In the past 7 days, Irkutsk had 3 rainy days and 11.6 mm of rain in total.
What should I pack for Irkutsk?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Irkutsk Oblast weather by month
When is the best time to visit Irkutsk Oblast?
Based on weather alone, the best time to visit Irkutsk Oblast is May–Aug, according to NASA's 2001–2025 climate averages. Oct–Apr tends to be the least pleasant. Average highs run from -17°C (2°F) in January to 26°C (80°F) in July.
What is the rainiest month in Irkutsk Oblast?
July is the wettest month, with about 85 mm (3.3 in) of rain on average. February is the driest, with about 9 mm (0.4 in).
What is the hottest month in Irkutsk Oblast?
July is the warmest, with average highs of 26°C (80°F) and lows of 14°C (58°F). January is the coolest, with highs of -17°C (2°F) and lows of -25°C (-14°F).
Does Irkutsk Oblast have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is July at about 85 mm (3.3 in).
Irkutsk Oblast weather month by month
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Irkutsk), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in Irkutsk Oblast
Weather can differ a lot within Irkutsk Oblast: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Irkutsk | May–Aug | None | -17–26°C | 419 mm |
| Bratsk | Jun–Aug | None | -18–24°C | 525 mm |
| Angarsk | May–Sep | None | -15–26°C | 456 mm |
| Ust’-Ilimsk | Jun–Aug | None | -19–23°C | 553 mm |
| Usol’ye-Sibirskoye | May–Aug | None | -17–26°C | 436 mm |
| Cheremkhovo | May–Aug | None | -17–25°C | 478 mm |
| Tulun | Jun–Aug | None | -16–24°C | 548 mm |
| Ust’-Kut | Jun–Aug | None | -20–23°C | 584 mm |
| Shelekhov | Jun–Aug | None | -15–26°C | 506 mm |
| Sayansk | May–Aug | None | -16–25°C | 493 mm |
| Nizhneudinsk | Jun–Aug | None | -14–23°C | 617 mm |
| Tayshet | Jun–Aug | None | -15–25°C | 589 mm |