La Grotte du Semaphore
Protected Area
Cap Ferrat
Why dive here
With 157+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and mobula rays (devil rays) - La Grotte du Semaphore offers some of Marseille & Calanques's richest cave diving. Water ranges 14-25°C, warmest July, August, September.
La Grotte du Semaphore is a cave dive tucked into the Calanques coastline. You'll drop into a large cavern, with shafts of light often cutting through the entrance if the sun is right. It's a fairly straightforward penetration, making it a good spot for divers looking to try out cave environments without extreme challenges. Just watch your buoyancy; the bottom can be silty.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Nearest Dive Centres to La Grotte du Semaphore
Dive shops near La Grotte du Semaphore
Cap Ferrat Diving
RAND’EAU ÉVASION
Aqua Pro Dive International
Nice Diving
Sub-Marine
BeFree2Dive
Reviews for La Grotte du Semaphore
Conditions
Ocean conditions, forecast and tides for La Grotte du Semaphore
La Grotte du Semaphore Ocean Conditions
Monthly averages for La Grotte du Semaphore, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (43.11, 5.89) (32km away)
October Averages
Sea Temperature
21°C
69°F · Range: 15.7–23.1°C
Air Temperature
18°C
64°F
Wind Speed
6.69 m/s
13.0 knots
Atmospheric Pressure
1016.9 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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