Climate Overview
The climate in Ust-Ilimsk Airport is cold. The average annual temperature is -1°C and approximately 403mm of precipitation falls per year. August is the wettest month, receiving around 51mm of rainfall. Ust-Ilimsk Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are December, January, February, when temperatures can drop to -26°C. Snowfall occurs from January to December, with around 164cm accumulating over the season.
Temperature
Ust-Ilimsk Airport has a wide annual temperature range, spanning 50°C from the coldest to warmest months. June is the warmest month, though highs remain moderate at 24°C with a mean of 18°C. December brings the harshest conditions, with lows dropping to -26°C and an average temperature of -21°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 13°C shift in average temperatures.
Precipitation
Ust-Ilimsk Airport is a relatively dry area, receiving approximately 403mm of precipitation annually, which averages out to around 34mm per month. The wettest month is August, averaging 51mm of rainfall. June and July also tend to see above-average precipitation. The driest month is February, with just 17mm. That's 34mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 164cm accumulating over the season. December typically sees the most snow at around 34cm.
Wind
Ust-Ilimsk Airport is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
80 days until Autumn
It is currently summer in Ust-Ilimsk Airport, which began on June 21, 2026. Ust-Ilimsk Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in June at around 24°C, while the coldest stretch bottoms out in December near -26°C. Autumn is next, beginning on September 23, 2026 — 80 days from now.
Spring
Temperatures range from -12 to 14°C. Rainfall is relatively light, with around 92mm over the season and a monthly average of 31mm. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 10 to 24°C. Rainfall is relatively light, with around 134mm over the season and a monthly average of 45mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -18 to 13°C. Rainfall is relatively light, with around 104mm over the season and a monthly average of 35mm. Expect around 53cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -26 to -12°C. Rainfall is relatively light, with around 72mm over the season and a monthly average of 24mm. Expect around 72cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
The best time to visit Ust-Ilimsk Airport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 45mm per month. By contrast, December can be quite cold with temperatures dropping to -26°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Ust-Ilimsk Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
