Selaön Island

Largest lake island in Mälaren, inhabited villages

An island in Lake Mälaren, Selaön attracts boaters and cyclists with its shoreline beaches, forests and scattered farms; summer visitors stay in cottages, swim and explore small villages and local churches.

Main image

Selaön at a Glance#

About Selaön#

Selaön is an island in Lake Mälaren in Södermanland County, Sweden, forming part of the lake’s archipelago. It is a populated island with villages, roads and farmland rather than a wilderness area.

The island contains residential communities, cultivated land and local services that serve both permanent residents and visitors. It is used for recreation and local tourism in the Mälaren lake district.

Historically the island has been settled for centuries and developed in line with the surrounding Mälaren region; it retains a mixture of rural and village landscapes.

Selaön sits within Lake Mälaren in central-eastern Sweden and is administratively part of Södermanland County. It is linked to the surrounding mainland by road bridges and lies among other islands and coastal settlements in the lake.

  • Bridge access: Connected to the mainland by bridge near Stallarholmen, making it accessible by road and suitable for day visits from surrounding towns.

Tips for Visiting Selaön#

  • Use the main road access at Stallarholmen (the bridge/causeway) to reach Selaön - that is the usual entry point for visitors exploring the island by car or bike.
  • Visit on weekday mornings or outside peak summer weekends to enjoy quieter lakeside viewpoints and village lanes; the island becomes noticeably busier with locals and daytrippers in July-August.
  • Respect private land: much of Selaön is settled countryside with private shoreline and cottages, so stick to marked public footpaths, village streets and public picnic areas when exploring.

Best Time to Visit Selaön#

Visit in summer for warm weather and water-based activities; shoulder seasons are quieter and still pleasant for exploration.

Summer
Jun-Aug · 15-25 °C
Warmest and most pleasant time for boating, swimming and outdoor activities on and around the island; busiest season.
Spring/Autumn
Apr-May & Sep-Oct · 5-15 °C
Cooler, quieter shoulder seasons good for walking and cycling with fewer tourists.
Winter
Dec-Feb · -5-2 °C
Cold with possible ice on the surrounding waterways; outdoor activity is possible but limited and quieter.

Weather & Climate near Selaön#

Climate

Selaön's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -6°C to 22°C. Moderate rainfall (534 mm/year).

Air Quality: AQI 20 Good
Best Time to Visit
MayAugustJune
Temperature & Rainfall
Temperature Range
33°
Warmest Month
-29°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -5° - 0° -7° 35 mm overcast 97% 3.3 m/s 0.0 low 6.7h
February Poor -6° - 0° -8° 25 mm overcast 96% 3.3 m/s 0.1 low 9.0h
March Acceptable -3° - 4° -4° 29 mm overcast 89% 3.3 m/s 0.3 low 11.6h
April Good 0° - 9° 2° 34 mm partly cloudy 81% 3.2 m/s 0.6 moderate 14.3h
May Very Good 5° - 16° 11° 33 mm partly cloudy 77% 3.2 m/s 1.0 high 16.8h
June Good 10° - 20° 15° 53 mm partly cloudy 74% 2.9 m/s 1.3 high 18.2h
July Good 12° - 22° 17° 68 mm partly cloudy 73% 2.7 m/s 1.3 high 17.5h
August Very Good 11° - 21° 16° 57 mm partly cloudy 77% 2.6 m/s 0.9 moderate 15.3h
September Good 7° - 15° 11° 57 mm overcast 82% 2.9 m/s 0.5 low 12.6h
October Acceptable 4° - 10° 4° 50 mm overcast 90% 3.0 m/s 0.1 low 10.0h
November Poor -1° - 5° -1° 50 mm overcast 96% 3.1 m/s 0.0 low 7.4h
December Poor -4° - 1° -5° 43 mm overcast 97% 3.1 m/s 0.0 low 5.9h