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Blue Cave of Biševo
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The Blue Cave on Biševo Island is one of the most iconic natural attractions on the Croatian Adriatic coast, world-renowned for its mesmerizing light effects. The cave was first introduced to the public in 1884 by Baron Eugen von Ransonnet-Villez, who commissioned the widening of the narrow natural entrance to allow small boats to enter. Between 11:00 AM and 12:00 PM, sunlight passes through a submerged natural opening and reflects off the white limestone floor, illuminating the cave in a brilliant azure glow. This phenomenon also gives submerged objects a shimmering silver appearance, creating a surreal and magical atmosphere inside the cavern. The cave is approximately 24 meters long and 10 to 12 meters deep, with its ceiling reaching up to 15 meters above the sea surface. Access is strictly controlled and only possible by small professional boats during calm sea conditions. Since 1951, the Blue Cave has been designated as a protected geomorphological monument of nature.
- Location: Croatia
- Top sights: Blue Cave · Porat · Salbunara
- Nearby: Komiža (9 km)
Best time to visit & climate
The most pleasant time to visit is May–Jul.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 11 | 11 | 12 | 15 | 18 | 23 | 25 | 26 | 22 | 19 | 16 | 13 |
| Rain mm | 85 | 81 | 74 | 58 | 48 | 42 | 25 | 33 | 80 | 80 | 114 | 109 |
📋 Practical info
Visiting
The Blue Cave is only accessible by boat and is visited when the sea is calm. Entry is through a narrow opening, and the interior glows with an impressive blue light.
Typical hours
Boat tours to the cave typically depart in the morning and depend on weather conditions. During peak season multiple trips run daily - check exact times locally.
Photography
Photography is allowed but without flash to preserve the natural blue glow. A camera with good low-light performance gives the best results.
Time needed
The stay inside the cave itself lasts only about 10-15 minutes. Expect the entire boat trip to take around 1-2 hours including travel to and from the cave.
Combine with
Combine the cave trip with a visit to the island of Vis, especially the town of Komiža. Nearby Stiniva Cove and the Green Cave are also worthwhile destinations.
Getting there
The cave is reached only by organized boat tours departing from Komiža on the island of Vis. Private boats can also be used if conditions allow.
Insider tip
Book the earliest tour of the day to avoid crowds and catch the best light. Bring a waterproof bag for your camera.
Geography
Facts
- Discovered and described in 1884 by Eugen von Ransonnet-Villez.
- The best light effect occurs daily between 11:00 AM and noon.
- The cave measures 24 meters in length and 15 meters in height.
- A submerged natural opening acts as the source of light reflection.
- The current boat entrance is only 1.5 meters high and 2.5 meters wide.
- It has been a protected geomorphological monument since 1951.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Blue Cave of Biševo (3)
Sights nearby
Frequently asked questions
When is the best time to visit the Blue Cave?
Between 11:00 AM and 12:00 PM, when the sunlight hits at the well-suited angle and the water glows blue.
How do you get to Biševo island?
Most tours depart from Komiža on Vis island or as day trips from Split and Hvar.
Is swimming allowed inside the Blue Cave?
No, swimming inside the cave has been strictly prohibited for several years.
How big are the boats that enter?
Only small official boats can pass through the narrow entrance; you often have to duck your head.
Should I expect waiting times?
In high season, waiting times can be several hours; there is a ticket system in Mezupurat bay.
Blue Cave of Biševo: where is it located?
Blue Cave of Biševo is located in Croatia.
Blue Cave of Biševo: what is there to see?
Highlights include Blue Cave, Porat, Salbunara.
Blue Cave of Biševo: when is the best time to visit?
The most pleasant time to visit is May, Jul.
Blue Cave of Biševo: why is it worth visiting?
The Blue Cave on Biševo Island is one of the most iconic natural attractions on the Croatian Adriatic coast, world-renowned for its mesmerizing light effects.
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