Climate Insights for Haapajärvi

The climate in Haapajärvi is cool. The average annual temperature is 4°C and approximately 695mm of precipitation falls per year. Haapajärvi receives a notable amount of rainfall throughout the year, including during its driest month. Haapajärvi 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, March, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 153cm accumulating over the season.

Temperatures in Haapajärvi vary considerably across the year, with a 31°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 20°C with a mean of 16°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -8°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Haapajärvi is a relatively dry area, receiving approximately 695mm of precipitation annually, which averages out to around 58mm per month. The wettest month is July, averaging 94mm of rainfall. August and June also tend to see above-average precipitation. The driest month is March, with just 32mm. That's 62mm less than July, 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 153cm accumulating over the season. December typically sees the most snow at around 30cm.

Haapajärvi is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently winter in Haapajärvi, which began on December 21, 2026. Haapajärvi 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 20°C, while the coldest stretch bottoms out in January near -11°C. Spring is next, beginning on March 20, 2026 — 1 days from now.

The best time to visit Haapajärvi is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 94mm per month. By contrast, January can be quite cold with temperatures dropping to -11°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Haapajärvi 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.