Grotta Byron
Protected Area
Fondali Isole Palmaria - Tino - Tinetto
Why dive here
With 70+ marine species recorded in the area - including blue sharks, dolphins, humpback whales, mobula rays (devil rays) and oceanic whitetip sharks - Grotta Byron offers some of Portofino & Liguria's richest cave diving. Water ranges 14-27°C, warmest July, August, September.
Grotta Byron is a straightforward cavern dive near Portofino, great for newer divers. The entrance sits at about 8 metres, leading into a large, airy space where you can surface inside and admire the light shafts. We’ve seen small schools of damselfish and often find nudibranchs clinging to the walls near the entry. It’s a pleasant, easy dive, perfect for building confidence in an overhead environment.
Typical Grotta Byron Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Grotta Byron
Dive shops near Grotta Byron
SSI Scuba Diving
LERICI FREEDIVING
Associazione Diving 5 Terre
LORENZO SUB DIVING CENTER
MASSUB DIVING CENTER - PORTOFINO
Reviews for Grotta Byron
Conditions
Ocean conditions, forecast and tides for Grotta Byron
Grotta Byron Ocean Conditions
Monthly averages for Grotta Byron, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (44.38, 9.02) (43km away)
October Averages
Sea Temperature
21°C
70°F · Range: 19–23.2°C
Air Temperature
18°C
64°F
Wind Speed
4.49 m/s
8.7 knots
Atmospheric Pressure
1017.3 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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