Best beaches in Koster Islands

2 ranked beaches in Koster Islands, Västra Götaland County

Ranked by the OnlyBeaches Index (OBI) — a 1-10 score blending water purity, conditions, crowd levels and vibe. Updated every 30 minutes.

All beaches in Koster Islands

Endless Beaches. Endless Vibes.

32,000+ beaches scored live by ocean data — every wave, every weekend.

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Basteviken Beach

Remote-feeling North Koster beach with strong discovery value.

7.0

Rörvik Beach

A key South Koster beach in Sweden’s first marine national park setting.

7.0

What makes Koster Islands's beaches stand out?

Koster Islands sits in Västra Götaland County, Sweden and is home to 2 ranked beaches on OnlyBeaches. Every beach here is scored by the OnlyBeaches Index — a 1-10 metric blending water purity, live conditions (waves, water temperature, wind), crowd intelligence and vibe.

Whether you're after the highest-scoring beach in Koster Islands or a quieter hidden cove, the list above is refreshed every 30 minutes using live Stormglass and OpenWeather data.