Trollhättan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Trollhättan.
Climate overview of Trollhättan
The climate in Trollhättan, Västra Götaland, Sweden, is marked by large temperature swings across the seasons, ranging from 22°C (72°F) in July to 3°C (37°F) in January.
Trollhättan sees a moderate amount of rain/snowfall, totalling around 870 mm (34 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. June is the sunniest month, averaging 8.7 hours of sunshine per day.
Trollhättan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Trollhättan - and find the best time to visit.
Monthly Temperature in Trollhättan
In Trollhättan, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 22°C (72°F) in July, the warmest time of the year, to a chilly 3°C (37°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°F) in July to around -3°C (27°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Trollhättan
On average, Trollhättan receives a reasonable amount of rain/snowfall, with an annual precipitation of 870 mm (34 in). While rainfall varies throughout the year, each season offers its own charm. August brings wetter days averaging 95 mm (3.7 in) of precipitation, spread over 13 rainy days.
In contrast, the driest month March experiences a drier climate, with about 47 mm (1.9 in) of snow/rainfall spread across 13 snowy/rainy days. For more details, please visit our Trollhättan Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Trollhättan
Seasonal changes in sunshine hours are quite dramatic in Trollhättan. While June receives considerable daily sunshine with up to 8.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Trollhättan by Month
The relative humidity is high throughout the year in Trollhättan.
The city experiences its highest humidity in December, reaching 85%. In May, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Trollhättan
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: June
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -3°C (27°F).
Frequently asked questions about the climate in Trollhättan
What is the best time to visit Trollhättan?
June, July and August typically offer the most optimal weather in Trollhättan. In contrast, January, February, March, November and December tend to have less optimal conditions. Trollhättan has warm summers and cold winters.
What temperatures can I expect in Trollhättan?
Daytime highs range from 3°C (37°F) in January to 22°C (72°F) in July. Nighttime lows range from -3°C (27°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Trollhättan get?
Annual rainfall is around 870 mm (34 in). August is the wettest month with 95 mm (3.7 in), while March is the driest with 47 mm (1.9 in).
How sunny is Trollhättan?
Trollhättan receives around 1,779 hours of sunshine per year. June is the sunniest month with 260 hours, while December is the cloudiest with just 33 hours.
Trollhättan 3-Day Forecast
Trollhättan on the map
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