Trollhättan weather and climate in 2025
Day
15 °C
Night
8 °C
Sea
15 °C
Precipitation
72 mm
in month
Rainy days
12 days
in month
Daylight
13 hours
average
Sunshine
4 hours
average
Humidity
81 %
Day
15 °C
Night
8 °C
Sea
15 °C
Precipitation
72 mm
in month
Rainy days
12 days
in month
Daylight
13 hours
average
Sunshine
4 hours
average
Humidity
81 %
Overview: Trollhättan
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Weather overview for Trollhättan
Weather overview
Trollhättan, with its quintessentially Swedish climate, offers a diverse weather experience throughout the year. Daytime temperatures swing from a crisp 2 °C (36 °F) in the chill of December to a pleasant 21 °C (70 °F) in the height of July. In the winter months, prepare to embrace the cold, as nighttime temperatures can dip to -4 °C (25 °F) in February. Ample rainfall ensures the landscape stays lush, particularly from June to August when precipitation peaks. Nature lovers can rejoice as longer summer days bless the area with up to 8 hours of sunshine, making outdoor activities thoroughly enjoyable. As you pack your bags for Trollhättan, remember to dress in layers, and always carry an umbrella or raincoat to stay weather-prepared.
January weather
January's chill wraps Trollhättan in a cold embrace, with daytime temperatures barely reaching 1 °C (33 °F). Night falls to the frosty tone of -4 °C (25 °F), and while the days are short, the expectation of rain looms with 13 days.
February weather
February sees the persistence of winter's grip in Trollhättan, with daytime temperatures of 1 °C (34 °F) contrasted by brisk nights at -4 °C (25 °F). Rainy days decrease slightly to 10 days, while relative humidity remains high at 94 %.
March weather
March welcomes a subtle thaw with daily highs of 4 °C (40 °F), although nights remain cold at -2 °C (29 °F). Extended daylight with up to 28 hours of monthly sunshine indicates the onset of spring.
April weather
April's early bloom sees a notable rise in temperature, averaging 10 °C (49 °F) during the day, with rain recorded on 9 days. Nights are milder but can still fall to 2 °C (35 °F). Sunshine hours increase to 37 hours, urging the flora to awaken.
May weather
May brings an abundance of green as Trollhättan's landscapes are bathed in 16 °C (60 °F) warmth by day, and gentle breezes at night with minimum temperatures around 6 °C (43 °F). On average, rain touches down on 10 days, leaving the soil moist and flowers blooming.
June weather
June's call of summer is answered with Trollhättan warming to 19 °C (65 °F) by day and staying cozy at 10 °C (50 °F) after dusk. Rainfall peaks this season, with 70 mm (2.76 in) expected to fall across 12 days.
July weather
July stands as the zenith of summer in Trollhättan, with the thermostat hitting 21 °C (70 °F) and nights a comfortable 13 °C (55 °F). Rain persists on 11 days, yet the generous sun offsets the wet with 45 hours of radiance.
August weather
August slightly cools from July's heat, maintaining a comfortable 20 °C (68 °F) during the day and transiting to 12 °C (53 °F) at night. Rainfall rolls in with 79 mm (3.11 in), impacting 13 days.
September weather
September's transition into autumn sees Trollhättan's temperatures dip to 15 °C (59 °F) by day, with the crisp air of 8 °C (47 °F) after sunset. Light breezes and 72 mm (2.84 in) of rainfall over 12 days herald the season's change.
October weather
October's descent brings a chill with daily highs of 10 °C (50 °F) and lows reaching to 5 °C (40 °F). Frequent rain on 14 days and a modest 84 mm (3.31 in) of precipitation encourage the last dance of fall colors.
November weather
November signals the deeper onset of the Nordic chill, with Trollhättan's day temperatures falling to a sobering 5 °C (41 °F), and nights averaging at a frosty 1 °C (33 °F). Rain is present on 13 days, and daylight continues to recede.
December weather
December embraces Trollhättan with the full mantle of winter, as temperatures stalemate at 2 °C (36 °F) during daytime and nights are often below freezing at -3 °C (27 °F). Rainfall is consistent with average totals around 65 mm (2.56 in).
FAQs
How many layers of clothing are appropriate for Trollhättan in January?
In Trollhättan during January, you should consider at least three layers of clothing: a thermal base layer, an insulating mid-layer, and a windproof and waterproof outer layer to withstand the average high of 1 °C (33 °F).
Is February a dry month in Trollhättan?
February in Trollhättan isn't particularly dry, with nearly 10 days expected to be wet, so keep your rain gear handy during this chilly month.
Does March in Trollhättan experience significant warming?
March experiences a modest warming trend in Trollhättan, with day temperatures reaching 4 °C (40 °F), but layering remains essential to combat cold nights and lingering winter air.
Is Trollhättan warm enough for outdoor activities in April?
April’s 10 °C (49 °F) daytime temps invite you to enjoy Trollhättan's outdoor settings, but a jacket remains necessary. The warming trend is perfect for springtime hikes and picnics.
What is the average daytime temperature in Trollhättan in May?
May in Trollhättan is pleasantly warm with average daytime temperatures of 16 °C (60 °F), great for enjoying the burst of spring colors and longer days outdoors.
What temperatures can I expect during June in Trollhättan?
Expect mild and agreeable temperatures in June, with average highs reaching 19 °C (65 °F); ideal for sightseeing and savoring the longest days of the year.
Are temperatures in July conducive to swimming in Trollhättan?
July's temperatures reach a balmy 21 °C (70 °F); however, with sea temperatures averaging around 17 °C (63 °F), only the brave may find it pleasant for a swim in local waters.
What kind of weather does August bring in Trollhättan?
August in Trollhättan still feels like summer, although slightly cooler than July, with a daily high of 20 °C (68 °F). It's a good time for outdoor activities, just keep an eye on the sky.
What is the average daytime temperature in Trollhättan during September?
Average daytime temperatures in September are a cool 15 °C (59 °F), a gentle reminder that autumn is approaching and layering becomes increasingly important.
Can I expect many sunny hours during October in Trollhättan?
Sunny hours dwindle in October to 27 hours for the month, so while you can enjoy some clear days, they're fewer as autumn progresses.
How does the weather change in Trollhättan during November?
Weather in Trollhättan during November changes towards the colder side, with a noticeable drop in temperatures and the landscape preparing for the onset of winter.
How often can I witness snow in Trollhättan in December?
Snowfall in Trollhättan can happen in December, but it's mixed with rain across 13 days of precipitation, making for a very traditional Nordic winter feel.
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