Best time to visit Irkutsk, Russia
Based on 2020–2024 of daily weather data, the best months to visit Irkutsk are June, August, July — when temperatures are comfortable, rainfall is low, and sunshine is plentiful.
Months ranked by travel comfort
| Rank | Month | High | Low | Precip | Rainy days | Sun | Score |
|---|---|---|---|---|---|---|---|
| 1 ★ | June | 22.7° | 10.1° | 399.1 mm | 86 | 11.4 h | 84 |
| 2 ★ | August | 22.2° | 12.9° | 456.6 mm | 91 | 10.2 h | 83 |
| 3 ★ | July | 24.8° | 14.1° | 558.3 mm | 96 | 10.8 h | 79 |
| 4 | May | 17.1° | 3.8° | 230 mm | 87 | 10.9 h | 77 |
| 5 | September | 15.4° | 6.3° | 391.3 mm | 80 | 8.1 h | 68 |
| 6 | April | 9.8° | -3.1° | 139.2 mm | 68 | 10.3 h | 64 |
| 7 | October | 7.8° | -1.5° | 79.2 mm | 56 | 8 h | 61 |
| 8 | March | 0.2° | -11.9° | 58.1 mm | 51 | 9.6 h | 50 |
| 9 | February | -10.8° | -20.9° | 44.7 mm | 47 | 7.9 h | 47 |
| 10 | January | -14.3° | -22.5° | 64.6 mm | 63 | 5.9 h | 42 |
| 11 | November | -2.2° | -9.9° | 64.1 mm | 61 | 5.7 h | 42 |
| 12 | December | -13° | -21.1° | 63.2 mm | 69 | 4.9 h | 40 |
Score (0–100) blends ideal-temperature comfort (50%), low-rainfall (30%), and sunshine (20%). Higher is better for a typical sightseeing trip.
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