Karlstad Weather in September
During September, Karlstad experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 10°C (50°F). Expect quite a bit of rainfall. Around 82 mm (3.2 in) is typical.
Rainfall in Karlstad in September
Historically, September sees about 14 days of rain, with a monthly average of 82 mm (3.2 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Karlstad in September
September in Karlstad brings moderate temperatures, with highs of 17°C (63°F) and nights around 10°C (50°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Karlstad in September
The month experiences a moderate amount of sunlight, with 176 hours of sunshine. This provides a nice balance between sunshine and clouds.
Wind Speed in Karlstad in September
September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Karlstad's climate page.
Karlstad Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
17°C (63°F)
Chance of Rain
48%
Precipitation
82 mm (3.2 in)
Rainy days
14 days
Humidity
77%
Windspeed
3 m/s (6 knots)
Sunshine
176 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Karlstad typically drop from around 17°C (63°F) at the start of September to approximately 13°C (55°F) by the end. Nights are cold, with lows typically ranging from 4°C (39°F) to 9°C (48°F).
Average temperatures in September
Historical weather for Karlstad in September
Browse day-by-day weather records for Karlstad spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Karlstad historical weather extremes in September
The extremes listed below come from historical weather data collected in Karlstad from 1976 through 2025.
- On September 5, 2024, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
- The coldest September day was on September 29, 1995, with a maximum of 6°C (43°F).
- The coldest night in September in Karlstad was on September 27, 1986, with a minimum of -5°C (23°F).
Best Places in Sweden in September
Find out more about the weather in Sweden and which places have the best travel conditions in this month. See all of Sweden in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Karlstad in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Karlstad in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Karlstad's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Karlstad climate overview or explore weather in Sweden.
