The Blue Cave is a sea cave on the small island of Biševo, off Komiža on Vis. You can't take your own boat in or swim inside: visits use a licensed cave boat from Mezuporat. (From the operator, ) Nautički centar Komiža d.o.o. holds the county's concession to organise visits to the Blue Cave (Official source, ), and it posts the queue and the sea conditions online.
Written by Domagoj Franc, editor. Reviewed by Ivor Benko, skipper.
All 28 facts on this page name their source, the latest checked on : 6 from the operator, 9 from official sources, 4 measured by us and 9 from third-party sources, such as pilot books and magazines, so treat those 9 as a guide.
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About 5 NM from Komiža to the Blue Cave, about 1 h at 6 knots. (Measured by us, )
Nautički centar Komiža d.o.o. posts the queue and the sea conditions for visits online. (From the operator, ) Nautički centar Komiža d.o.o. holds the county's concession to organise visits to the Blue Cave. (Official source, ) See the queue now
You leave your boat in Mezuporat bay, which serves the Blue Cave visits, and go into the cave in the operator's boat: the ticket covers one transfer and the visit. The operator's information desk is on the shore. (Official source, ) Nautički centar Komiža d.o.o. holds the county concession for the mooring in Mezuporat bay, where you land for the Blue Cave. (Official source, ) Where to wait
You go in on a small boat through a passage about 1.5 m high and 2.4 to 2.5 m wide. (Third-party source, )
The rule: Visits are only with the concession holder's boats, from Mezuporat, with a ticket. No boat of any kind may move, anchor or tie up in the Blue Cave or the Bear Cave, and you may not swim or dive in the Blue Cave
(From the operator, )If you are starting near Dubrovnik, check which cave your trip reaches: the Blue Cave on Koločep near Dubrovnik is a different cave from the Blue Cave on Biševo. (Third-party source, )
Unknown
You leave your boat in Mezuporat bay, which serves the Blue Cave visits, and go into the cave in the operator's boat: the ticket covers one transfer and the visit. The operator's information desk is on the shore
(Official source, )
€60 a day on the town quay, 12 m boat
(Official source, )PoratSalbunaraNot for navigationDay visit, no overnight stay
The cove on Biševo's east coast where the cave opens. The cave boats come and go here.
Balun cove, outside the cave, is deep and open to easterly and southerly winds. Mezuporat has 18 buoys that cave visitors may use free for two hours. Our cautious answer: wait in Mezuporat, on a buoy or at the pier, and don't anchor in Balun cove. Our skipper reviewer hasn't checked this yet. (Third-party source, )
The bay just north of the cave. You leave your boat in Mezuporat bay, which serves the Blue Cave visits, and go into the cave in the operator's boat: the ticket covers one transfer and the visit. The operator's information desk is on the shore. (Official source, )
Mezuporat is open to the north, north-east and east: a tramontana or bura can raise a rough sea, and a jugo sends a surge in. It is protected from the south-west and west (Official source, )
Some boats stay the night at Biševo in settled weather, on the Mezuporat buoys or at anchor in Porat. Our cautious answer: stay only with a settled forecast and no bura, jugo or westerly, and anchor near the pier side of Mezuporat bay, not in its west part. Our skipper reviewer hasn't checked this yet. (Third-party source, )
The nearest town quay, 5 NM (Measured by us, ) from the cave, with two buoy fields in the bay. Nautički centar Komiža d.o.o. runs state boat line 612 from Komiža to Mezuporat, Salbunara and Porat on Biševo, with a 2026 timetable. (From the operator, )
Komiža bay is open to the west and south-west, and these winds raise high waves in it (Third-party source, ). Berths inside the breakwater are sheltered (Third-party source, ). Its buoys lie close together, are open to westerlies, and take swell in any wind with south in it. A bura blows across them in shifting gusts but raises no waves. (Third-party source, ) Our cautious answer: if a westerly, south-westerly or thunderstorm is forecast, lie inside the breakwater or go round to Vis town. Our skipper reviewer hasn't checked this yet.
€60a day on the town quay, 12 m boat (Official source, )
Visits run only when the sea and weather allow. The boats have to pass a low entrance, so check before you leave Komiža. (Third-party source, )
Queue and sea conditionsOur forecast at the cave
Which winds close it. Balun cove, where the cave is, is open to the north-east, east and south-east, so a bura or a jugo sends swell in. It is sheltered from the maestral, and visits run only when the sea allows. Our cautious answer: in a bura, a jugo or any strong easterly, expect the visits to stop, and don't take your own boat round to Balun. Our skipper reviewer hasn't checked this yet. (Third-party source, ) Our guide to the winds explains the jugo and the bura.
Plan B. If the sea is rough at Biševo, don't go. Stay another night in Komiža, as our day 4 plan says.
At the Blue Cave, in Balun cove on the east coast of Biševo.
Model forecast from Open-Meteo.Not an official forecast. Not for navigation.
Official forecast: DHMZ marine forecast (Official source, )
Each part of the day shows its strongest hourly wind and gust, and its highest wave, in Croatian time. The words follow the Beaufort scale, and the model can't tell a real bura from any other northeast wind. How to read a model forecast
Weather data by Open-Meteo.com, CC BY 4.0. Grouped into parts of the day by OlaSail.
A sandy bay on the west coast, 6 NM from Komiža (Measured by us, )
By the hamlet of Porat, across the island from the cave.
A small bay at the north end of the island
By the hamlet of Salbunara, at the island's north end.
The other sea cave, off the south coast of Vis
A smaller cave on the islet of Ravnik, by Rukavac, with its own buoys and tickets. Its page has how to stop there.
The cave is on day 4 of Seven days from Split. You leave Komiža early, visit the cave, then cross to the Pakleni Islands for the night.
Day 4 on the route pageOur planning line is a little longer than the tourist board figure. Clearance from land varies along the line. (Measured by us, )
From sailors after a night here. They tell us what to check next, and don't count in the checks above.
The Blue Cave, Biševo
When a club flotilla reached Komiža in mid-September 2024, the Blue Cave was closed because of a southerly swell.
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Other ways to help28 facts from 26 sources, last checked .
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