Flen Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Flen.

Climate overview of Flen

Temperatures in Flen, Sodermanland, Sweden, vary greatly throughout the year. July is the hottest month at 23°C (73°F), while January is the coldest at 2°C (36°F).

The city receives around 675 mm (27 in) of rain/snowfall per year. It experiences a distinct dry season from February to March, with warm summers and very cold winters. July is the wettest month and March the driest. The most sunshine falls in June, with an average of 9.8 hours of daily sunshine.

Flen Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Flen - and find the best time to visit.

Monthly Temperature in Flen

The climate in Flen is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 23°C (73°F) in July to a very cold 2°C (36°F) in January.

Nighttime temperatures range from 13°C (55°F) in July to -5°C (23°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Flen

Generally, Flen receives mid-range precipitation levels, with 675 mm (27 in) annually. The seasons in Flen bring significant changes in precipitation. The wettest month, July, receives moderate rainfall, with an average of 83 mm (3.3 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, March, experiences much less snow/rainfall, totaling 35 mm (1.4 in) over 12 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Flen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Flen

In Flen, summer days are longer and more sunny, with daily sunshine hours peaking at 9.8 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.1 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Mälaren, Sweden (60 KM, 37 Miles).

Daily hours of sunshine

Data from: Mälaren, Sweden (60 KM, 37 Miles).

Best Time to Visit Flen

Conditions in Flen are generally most comfortable in June, July and August. They are typically least comfortable in January, February, March, November and December.

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: A distinct dry season from February to March, with warm summers and very cold winters
  • Coldest conditions: January, with freezing nights around -5°C (23°F).

Frequently asked questions about the climate in Flen

What is the best time to visit Flen?

June, July and August typically offer the most optimal weather in Flen. In contrast, January, February, March, November and December tend to have less optimal conditions. Flen has a distinct dry season from February to March, with warm summers and very cold winters.

What temperatures can I expect in Flen?

Daytime highs range from 2°C (36°F) in January to 23°C (73°F) in July. Nighttime lows range from -5°C (23°F) to 13°C (55°F). Temperatures vary considerably through the year.

How much rain does Flen get?

Annual rainfall is around 675 mm (27 in). July is the wettest month with 83 mm (3.3 in), while March is the driest with 35 mm (1.4 in).

How sunny is Flen?

Flen receives around 1,829 hours of sunshine per year. June is the sunniest month with 293 hours, while December is the cloudiest with just 34 hours.

Flen 3-Day Forecast

Flen on the map

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