Beach & Entry
Surface, sand, water entry and bottom
Surface Type
Main surface type
sand
Sand Color
Main sand colour
white
Water Entry
How steep the drop-off is
gentle
Shallow Distance
Metres to waist-deep water
100 m
Bottom Type
Main bottom type
sand
Water Shoes
Whether special footwear is needed
not needed
Beach Length
Beach length in metres
800 m
Frequently asked questions
Onsbæk Beach: what is the water like at this beach?
At this beach, water colour — turquoise, clarity high, average temperature +16.4°C, warms up to +20.0°C in the warmest season. Check the exact temperature by month in the chart section.
Onsbæk Beach: what are the waves like and is it safe to swim?
Waves at this beach are — calm. Average wave height — 0.2 m. Calm water is great for families with children and those who prefer not to deal with strong swell.
Onsbæk Beach: what is the water entry and bottom like?
Water entry is — gentle. The shallow area extends for 100 metres from the shore. Bottom — sand. Special shoes are not required — the water entry is comfortable. The gentle slope is safe for children and inexperienced swimmers.
Onsbæk Beach: what kind of sand and surface does the beach have?
Beach surface — sand. Sand colour — white. Texture — fine. Beach length — 800 metres.
Onsbæk Beach: when is the swimming season?
The swimming season starts in June, July. It ends in August, September. The best month for a holiday is July. This is when the water is warmest and the weather is most comfortable.
Onsbæk Beach: is it safe to swim?
Water quality is rated as excellent. Rip currents are unlikely. Jellyfish risk — low. Always watch for warning signs and follow lifeguards instructions.
Onsbæk Beach: which dangerous creatures live in the water?
The water contains: blue-green algae. We recommend wearing protective footwear, not touching marine life and taking care when entering the water.
Onsbæk Beach: what infrastructure is available on the beach?
The beach offers: toilets, parking. All amenities are listed in the "Infrastructure" section above.
Onsbæk Beach: are there lifeguards and a first aid station?
There are no lifeguards on the beach — be especially careful when swimming.
Onsbæk Beach: where can I eat near the beach?
Popular places nearby: Onsbæk Beach Restaurants. Cuisines available: Local. See the "Infrastructure" section for details.
Onsbæk Beach: what should I bring to the beach?
We recommend bringing: SPF50+ cream, Water, Towel, Swimsuit, Flip-flops, Cash, Headwear.
Onsbæk Beach: when is the best time to swim?
The best time for swimming is from 10:00 to 18:00 in summer. The Baltic Sea near Bornholm warms up quickly and retains heat for a long time — swimming is possible even in September.
Onsbæk Beach: what are the rules and restrictions on the beach?
Littering is prohibited. Swimming in unequipped areas is not recommended. Respect wildlife.
Onsbæk Beach: what activities are available?
The beach offers: surfing, kayaking and SUP. See the "Activities" section above for details.
Onsbæk Beach: who is this beach best for?
Ideal for lovers of quiet nature holidays and families with children. Suitable for swimming and walks. Not suitable for lovers of noisy entertainment and developed infrastructure.
Onsbæk Beach: what makes this beach unique?
The beach is part of a long sandy stretch south of Rønne along with Stampen and Galløkken beaches. The water near Bornholm has a stable salinity of 7-8 ppm and is classified as "excellent" for 5 consecutive years.
Onsbæk Beach: what are the pros and cons of the beach?
Pros: Excellent water quality, Calm and quiet beach, Fine sand, Gentle water entry, Good swimming conditions, Free parking, Close to Rønne. Cons: No lifeguards, No cafes or toilets on the beach, Little natural shade, Rocks in the water in some places.
Onsbæk Beach: what is near the beach?
Nearby you can visit: Rønne, Stampen Beach, Galløkken Beach. Detailed descriptions in the "Nearby" section above.
Onsbæk Beach: how do I get to the city of Rønne?
The beach is located near the city of Rønne. Full information about the city — hotels, restaurants, attractions, transport — is available on the
city page for Rønne.