Climate Insights for Härnösand

The climate in Härnösand is cool. The average annual temperature is 6°C and approximately 698mm of precipitation falls per year. Härnösand receives a notable amount of rainfall throughout the year, including during its driest month. Härnösand 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 February, January, March, when temperatures can drop to -3°C. Snowfall occurs from January to December, with around 171cm accumulating over the season.

Härnösand sees moderate temperature variation throughout the year, ranging from -3°C to 17°C. July is the warmest month, though highs remain moderate at 17°C with a mean of 16°C. The coldest month is February, when overnight lows fall to -3°C and the daily average is -1°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Härnösand is a relatively dry area, receiving approximately 698mm of precipitation annually, which averages out to around 58mm per month. The wettest month is October, averaging 99mm of rainfall. December and November also tend to see above-average precipitation. The driest month is April, with just 35mm. That's 65mm less than October, 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 171cm accumulating over the season. January typically sees the most snow at around 41cm.

Härnösand is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 5km/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.

It is currently summer in Härnösand, which began on June 21, 2026. Härnösand 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 17°C, while the coldest stretch bottoms out in February near -3°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.

The best time to visit Härnösand is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 57mm per month. By contrast, February can be quite cold with temperatures dropping to -3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Härnösand 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.