Irkutsk Climate by Month
Irkutsk, Irkutsk Oblast, Russia
Warm summers and bitterly cold winters, with most rain from June to September.
Irkutsk has warm summers and bitterly cold winters, with most rain from June to September. July is the warmest month, with highs around 78°F (25°C); January is the coolest at 8°F (-13°C), and nights dip to -9°F (-23°C). Of the 16 in (395 mm) of rain in a typical year, 72% falls from June to September. February and March are almost completely dry.
- Warmest month
- 78°F(25°C)
- Average high, July
- Coldest nights
- -9°F(-23°C)
- Average low, January
- Rain per year
- 16 in(395 mm)
- Wettest: July
- Humidity
- 60%
- Sunniest: June
Best and worst months in Irkutsk
Best for weatherJune is the best time for weather in Irkutsk: highs near 75°F (24°C) and about 2.4 in (62 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 8°F (-13°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Irkutsk weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 8°F(-13°C) | -9°F(-23°C) | 0.4 in(10 mm) | 69% | 1.0 |
| FebFebruary | 17°F(-8°C) | -5°F(-21°C) | 0.2 in(6 mm) | 50% | 2.0 |
| MarMarch | 34°F(1°C) | 11°F(-12°C) | 0.3 in(7 mm) | 49% | 3.5 |
| AprApril | 51°F(10°C) | 28°F(-2°C) | 0.6 in(14 mm) | 49% | 4.6 |
| MayMay | 64°F(18°C) | 38°F(3°C) | 1.1 in(28 mm) | 47% | 5.6 |
| JunJuneBest | 75°F(24°C) | 49°F(10°C) | 2.4 in(62 mm) | 58% | 5.9 |
| JulJuly | 78°F(25°C) | 56°F(13°C) | 3.5 in(89 mm) | 67% | 5.5 |
| AugAugust | 73°F(23°C) | 51°F(11°C) | 3.5 in(88 mm) | 73% | 4.6 |
| SepSeptember | 60°F(16°C) | 39°F(4°C) | 1.9 in(47 mm) | 66% | 3.4 |
| OctOctober | 46°F(8°C) | 26°F(-3°C) | 0.7 in(17 mm) | 71% | 2.2 |
| NovNovember | 26°F(-4°C) | 9°F(-13°C) | 0.5 in(13 mm) | 61% | 1.2 |
| DecDecember | 12°F(-11°C) | -3°F(-20°C) | 0.6 in(14 mm) | 54% | 0.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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