ClimateForecastDecemberJanuary >>

Irkutsk Climate by Month

The temperature in Irkutsk can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and very cold during the cooler months. Irkutsk has a dry climate with relatively low precipitation levels. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

Visitors to Irkutsk can expect significant temperature changes throughout the year. Average daytime temperatures range from a comfortable 25°C in July, the warmest time of the year, to a very cold -14°C during cooler months like January. At night, temperatures typically average around -24°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Irkutsk tends toward drier weather patterns, receiving approximately 497 mm of rain/snow per year. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, August receives high rainfall, averaging 102 mm of precipitation, recorded across 14 rainy days. In contrast, the drier season, February brings less snowfall, with 11 mm over 8 snowy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Irkutsk. While May receives considerable daily sunshine with up to 8.9 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.2 hours of sunlight per day.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Irkutsk in Russia

During the months of June, July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Irkutsk have a dry season?
    Yes, the months of January, February, March, November and December are very dry.
  • Which is the warmest month in Irkutsk?
    July has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Irkutsk?
    The coldest month is January with an average maximum temperature of -14°C.
  • Which is the wettest month in Irkutsk?
    August tops the wettest month list with 102 mm of rainfall.
  • Which is the driest month in Irkutsk?
    February is the driest month with 11 mm of precipitation.
  • Which is the sunniest month in Irkutsk?
    May is the sunniest month with an average of 267 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Irkutsk

    Fri   Dec 13
    -7°C | -21°C
    E 4 km/h
    broken clouds and no rain

    broken clouds and no rain

    Sat   Dec 14
    -5°C | -13°C
    SW 4 km/h
    overcast and no rain

    overcast and no rain

    Sun   Dec 15
    -7°C | -14°C
    NW 4 km/h
    almost clear and no rain

    almost clear and no rain