Irkutsk weather by month & the best time to visit
Russia · city break · continental climate
The best time to visit Irkutsk is June — its sunniest month (Sunshine Score 83/100), with July and August close behind. Irkutsk averages about 2,466 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 57 mm of rain in June.
When is the best time to visit Irkutsk?
For sunshine, the best time to visit Irkutsk is June, then July and August. The dullest month is January (0/100, 11 mm of rain). The full month-by-month picture is in the table below.
How sunny is Irkutsk?
Irkutsk gets a moderate 2,466 hours of sunshine a year. 83 Sunshine Score points separate June (83) from January (0), so the month you pick matters. It ranks #8 of 145 destinations in Russia for annual sunshine, above the national median of 2,004 hours. Rain has a clear season: the wettest stretch, around July, carries about 53% of the annual 419 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -17° / 1°F | -25° / -13°F | 11 mm | 0 |
| February | 0 | -12° / 10°F | -23° / -9°F | 9 mm | 1 |
| March | 0 | -2° / 28°F | -13° / 9°F | 13 mm | 2 |
| April | 7 | 9° / 48°F | -3° / 27°F | 22 mm | 3 |
| May | 64 | 17° / 63°F | 3° / 37°F | 41 mm | 4 |
| June | 83 | 24° / 75°F | 12° / 54°F | 57 mm | 5 |
| July | 78 | 27° / 81°F | 15° / 59°F | 85 mm | 5 |
| August | 78 | 23° / 73°F | 12° / 54°F | 82 mm | 4 |
| September | 56 | 16° / 61°F | 4° / 39°F | 47 mm | 3 |
| October | 0 | 6° / 43°F | -4° / 25°F | 21 mm | 1 |
| November | 0 | -5° / 23°F | -13° / 9°F | 15 mm | 1 |
| December | 0 | -14° / 7°F | -22° / -8°F | 16 mm | 0 |
Nearest destinations
Head-to-head
How Irkutsk compares month by month: Irkutsk vs Ulaanbaatar (Sergelen) · Irkutsk vs Ulan Ude · Irkutsk vs Chita · all comparisons
Irkutsk: questions and answers
What kind of destination is Irkutsk?
Irkutsk is a city break in Russia at 498 m elevation with a continental climate.
How many hours of sunshine does Irkutsk get a year?
Irkutsk gets about 2,466 hours of sunshine a year, at its best around June.
When is the best time to visit Irkutsk?
The sunniest time to visit Irkutsk is June, when the Sunshine Score peaks at 83/100 (with July and August close behind). Expect daytime highs around 24°C / 75°F.
What is the least sunny month in Irkutsk?
January is the least sunny month in Irkutsk, scoring 0/100 with about 11 mm of rain.
How strong is the sun in Irkutsk?
The typical midday UV index in Irkutsk peaks around 5 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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