Climate Overview
The climate in Kungälv is cool. The average annual temperature is 8°C and approximately 864mm of precipitation falls per year. Kungälv receives a notable amount of rainfall throughout the year, including during its driest month. Kungälv is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, September. The coldest months are January, February, March, when temperatures can drop to -5°C. Snowfall occurs from January to November, with around 98cm accumulating over the season.
Temperature
Temperatures in Kungälv vary considerably across the year, with a 25°C difference between the coldest and warmest months. June 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 -5°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.
Precipitation
Kungälv is a moderately rainy area, receiving approximately 864mm of precipitation annually, which averages out to around 72mm per month. The wettest month is July, averaging 133mm of rainfall. June and August also tend to see above-average precipitation. The driest month is December, with just 34mm. That's 98mm 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 November, with around 98cm accumulating over the season. January typically sees the most snow at around 32cm.
Wind
Kungälv 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 November, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in Kungälv, which began on June 21, 2026. Kungälv 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 20°C, while the coldest stretch bottoms out in January near -5°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 0 to 17°C. Precipitation is moderate at around 187mm for the season, averaging 62mm per month. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 11 to 20°C. Rainfall is heavy, totalling around 341mm across the season with a monthly average of 114mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 0 to 19°C. Precipitation is moderate at around 173mm for the season, averaging 58mm per month. Expect around 13cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -5 to 6°C. Precipitation is moderate at around 163mm for the season, averaging 54mm per month. Expect around 52cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Kungälv 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.
