The Blue Grotto (Grotta Azzurra) is Capri's most famous natural attraction — a sea cave where sunlight passing through an underwater opening turns the water an electric, luminous blue. Visiting it involves a mandatory rowboat transfer, an entrance fee paid on-site and, in peak season, a fair amount of patience.
This guide covers current ticket prices, opening hours, every way to get there (from Capri, Sorrento, Naples and the Amalfi Coast), how the visit actually works, the best time to go, whether you can swim, what to do if it's closed, and whether it's worth it. Most Sorrento day-trippers see the grotto as part of a wider Capri boat tour — so we've flagged where a tour makes sense and where going independently is simpler.
What Is the Blue Grotto?
The Blue Grotto is a sea cave on the northwest coast of Capri, near Anacapri. The cave is roughly 60 metres long and 25 metres wide, with a sandy bottom, but the entry is only about 2 metres wide and barely 1 metre high at low tide. That tiny opening is why visitors must lie back flat in a small wooden rowboat to pass through — and why safe access is only possible when tides are low and the sea is calm.
The famous blue glow is a natural optical effect, not artificial lighting. Sunlight enters not only through the small visible entrance but, more importantly, through a larger opening submerged just below it. As light passes through the seawater, the red wavelengths are filtered out and only the blue remains, reflected back up off the pale, sandy seabed to fill the cavern with an intense sapphire glow. Because the effect depends entirely on sunlight, the colour is most vivid on bright, sunny days and fades on overcast ones.
History: Tiberius, the 1826 rediscovery and the "Room of Names"
The Blue Grotto was well known in Roman times. It is believed to have served as a marine nymphaeum — a grotto dedicated to water nymphs — and as a personal bathing spot for Emperor Tiberius, who moved to Capri in 27 AD (Villa Damecuta sits on the cliffs above the grotto). The Romans left a masonry landing platform inside the cave and decorated it with statues; three statues of the sea gods Neptune and Triton were recovered from the cave floor in 1964, and five recovered sculptures are now displayed in the Blue Grotto Museum at the Casa Rossa in Anacapri. At the back of the cave, passages lead to the "Sala dei Nomi" (Room of Names), covered in signatures left by visitors over the centuries.
After the fall of Rome the cave was largely abandoned — locals called it the "Grotta di Gradola" and avoided it, believing it home to spirits and monsters. It was famously "rediscovered" on 18 April 1826, when the German writer August Kopisch and painter Ernst Fries were guided in by a local fisherman, Angelo Ferraro. Kopisch publicised the cave in his writings, and it quickly became a must-see stop on the Grand Tour — helping launch Capri's reputation as a world tourism destination.
Blue Grotto Tickets & Prices (2026)
Here's where visitors get confused, so it's worth being precise. The Blue Grotto entrance is treated as a cultural site, and the price you pay at the cave is made up of two parts: an entrance ticket plus a fee for the licensed rowboat cooperative that takes you inside. The combined total in 2026 is €18 per person, paid in cash at the floating ticket office at the cave entrance — roughly €14 for the boat service of the sailors who accompany you inside, and about €4 split between the municipalities of Capri and Anacapri and the Ministry of Cultural Heritage.
There are reduced rates: entry is free for children under 6 and for EU citizens under 18 (who pay only the €12 rowboat fee), and EU citizens aged 18–25 pay a €2 entry ticket (€14 total). Treat €18 as the standard adult total but bring a little extra cash.
Important: the entrance fee is almost never included in the price of a boat tour or transfer — it is paid separately, in cash, at the cave. Bring euros; cards are generally not accepted at the cave itself.
Typical 2026 cost components:
| Item | Approx. 2026 price | Notes |
|---|---|---|
| Blue Grotto entrance (rowboat + ticket) | €18 per person | Cash only, at the floating ticket office |
| Motorboat transfer, Marina Grande ↔ grotto (round trip) | ~€24–25 pp | Motoscafisti / Laser Capri; entrance extra |
| 2-hour island boat tour with grotto stop (from Capri) | ~€24–25 pp | Entrance fee not included |
| Public bus, Anacapri → Blue Grotto | €2.40 one way | Cheapest route (€2.90 from the driver) |
| Group boat tour from Sorrento incl. grotto option | ~€125–145 pp | e.g. MBS Blu Charter; entrance fee extra |
| Private "gozzo" boat with skipper (from Capri) | from ~€200–300 per boat | 2–3 hours, up to ~7 people |
Tipping the rowers is customary but optional — many visitors give a few euros.