Climate Overview
The climate in Harju Airport is cool. The average annual temperature is 8°C and approximately 1033mm of precipitation falls per year. Harju Airport receives a notable amount of rainfall throughout the year, including during its driest month. Harju Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -10°C. Snowfall occurs from January to December, with around 154cm accumulating over the season.
Temperature
Harju Airport has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is July, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -10°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.
Precipitation
Harju Airport is a moderately rainy area, receiving approximately 1033mm of precipitation annually, which averages out to around 86mm per month. The wettest month is July, averaging 120mm of rainfall. June and August also tend to see above-average precipitation. The driest month is January, with just 50mm. That's 70mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 154cm accumulating over the season. February typically sees the most snow at around 36cm.
Wind
Harju Airport is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
6 days until Summer
It is currently spring in Harju Airport, which began on March 20, 2026. Harju 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 July at around 28°C, while the coldest stretch bottoms out in January near -10°C. Summer is next, beginning on June 21, 2026 — 6 days from now.
Spring
Temperatures range from -3 to 21°C. Precipitation is moderate at around 274mm for the season, averaging 91mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 28°C. Rainfall is heavy, totalling around 338mm across the season with a monthly average of 113mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from -1 to 23°C. Precipitation is moderate at around 268mm for the season, averaging 89mm per month. Expect around 12cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -10 to 0°C. Precipitation is moderate at around 154mm for the season, averaging 51mm per month. Expect around 98cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Harju 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.
