Is the Blue Cave open?
Boats can only enter the Blue Cave on Biševo when the sea is calm. In June, July and August waves have been too high on 8, 10 and 12 per cent of days. In December, on 50 per cent.
This week at Biševo
- Wednesday 14 October Likely closed Waves to 1.1 m
- Thursday 15 October Uncertain Waves to 0.8 m
- Friday 16 October Uncertain Waves to 0.8 m
- Saturday 17 October Uncertain Waves to 0.7 m
- Sunday 18 October Likely open Waves to 0.4 m
- Monday 19 October Likely open Waves to 0.4 m
- Tuesday 20 October Likely open Waves to 0.3 m
From the Open-Meteo wave forecast at Biševo. The cave's boatmen decide on the morning; this is hvaro's estimate.
Blue Cave trips from HvarOdds by month
Share of days in each month when the sea at Biševo was calm enough, borderline, or too rough to get in, from 2022–2025 wave data.
| Month | Days by outlook | Likely open | Likely closed |
|---|---|---|---|
| January | 17% | 48% | |
| February | 29% | 44% | |
| March | 26% | 44% | |
| April | 34% | 35% | |
| May | 44% | 28% | |
| June | 57% | 8% | |
| July | 48% | 10% | |
| August | 50% | 12% | |
| September | 42% | 27% | |
| October | 40% | 31% | |
| November | 23% | 45% | |
| December | 23% | 50% |
Likely open: waves under 0.6 m. Likely closed: over 1 m. The rest are borderline days that depend on the morning swell. These thresholds are hvaro's, not the operators'.
Before you book
- Biševo is about 40 km of open sea from Hvar Town, so trips are a long day by speedboat. The run out is the bumpy part when the wind is up.
- Pick a trip with free cancellation, and book early in your stay so a closed day can move.
- When the cave is shut, most boats still run the rest of the route. Ask the operator what changes.
- The light inside is at its bluest in late morning, in sunshine.