Climate averages 1991–2020
Irkutsk weather
in June.
A warm, moderately wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Irkutsk: daytime highs average 22.8°C and nights cool to about 10.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 65 mm of rain on roughly 10 days, which makes June a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 42 min on an average June day.
The nearest other city in this atlas is Angarsk (39 km away). In June its highs average 23.6°C, 0.8°C warmer than Irkutsk, with 59 mm of rain.
Among the 236 cities listed in Russia, Irkutsk ranks 76th of 236 for the warmest June highs and joint 105th of 236 for the driest June (rainfall, lowest first). The mean June high of those 236 cities is 21.8°C; Irkutsk is 1.0°C warmer than that mean.
From June to July, average highs rise by 1.8°C to 24.6°C, and monthly rainfall rises from 65 mm to 94 mm.
The annual picture
June in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Irkutsk climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -13.8°C-22.9°C | -22.9°C | 5.5 | 1.9 | 8.38 h |
| February | -8.2°C-20.0°C | -20.0°C | 5.2 | 1.8 | 9.910 h |
| March | 0.2°C-12.0°C | -12.0°C | 10 | 3.4 | 11.812 h |
| April | 9.4°C-2.7°C | -2.7°C | 22 | 5.6 | 13.914 h |
| May | 16.8°C3.3°C | 3.3°C | 38 | 8.9 | 15.716 h |
| June, selected | 22.8°C10.7°C | 10.7°C | 65 | 10.3 | 16.717 h |
| July | 24.6°C14.0°C | 14.0°C | 94 | 12.2 | 16.316 h |
| August | 22.2°C12.4°C | 12.4°C | 101 | 11.6 | 14.715 h |
| September | 15.4°C5.8°C | 5.8°C | 61 | 10.2 | 12.713 h |
| October | 6.9°C-1.8°C | -1.8°C | 23 | 5.7 | 10.711 h |
| November | -3.5°C-11.0°C | -11.0°C | 13 | 4.0 | 8.89 h |
| December | -11.4°C-19.4°C | -19.4°C | 9.5 | 3.5 | 7.88 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Angarsk in JuneRussia · 39 kmHigh 23.6°C · Low 11.3°C · 59 mm rain
- Usol’ye-Sibirskoye in JuneRussia · 67 kmHigh 23.4°C · Low 11.5°C · 63 mm rain
- Ulan-Ude in JuneRussia · 232 kmHigh 23.9°C · Low 10.8°C · 44 mm rain
- Darhan in JuneMongolia · 333 kmHigh 25.4°C · Low 12.6°C · 51 mm rain
- Erdenet in JuneMongolia · 363 kmHigh 21.2°C · Low 10.0°C · 63 mm rain
- Bratsk in JuneRussia · 461 kmHigh 18.0°C · Low 9.3°C · 51 mm rain
- Ulan Bator in JuneMongolia · 522 kmHigh 21.4°C · Low 8.4°C · 55 mm rain
- Chita in JuneRussia · 628 kmHigh 23.2°C · Low 10.8°C · 53 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Irkutsk) is explained once on the Irkutsk year overview and on the Sources, method and limits page.