Grotta Azzurra
Protected Area
Fondali dell'isola di Ustica
Why dive here
With 60+ marine species recorded in the area - including dolphins, sea turtles and sperm whales - Grotta Azzurra offers some of Ustica's richest cave diving. Water ranges 15-29°C, warmest July, August, September.
The Grotta Azzurra, or Blue Grotto, on Ustica is a popular stop, and for good reason. It’s a shallow cave, generally no deeper than 15 meters, perfect for newer divers or those looking for an easy, relaxing plunge. Sunlight filters through the entrance, catching the suspended particles and creating these incredible, electric blue shafts of light that dance around the cave walls. You’ll find the rocks here thick with sponges and red coral, and it’s a good spot to quietly observe salema and ornate wrasse flitting about. It’s certainly a memorable cavern dive without any of the challenging aspects you might find elsewhere.
Typical Grotta Azzurra 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.
Nearest Dive Centres to Grotta Azzurra
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Conditions
Ocean conditions, forecast and tides for Grotta Azzurra
Grotta Azzurra Ocean Conditions
Monthly averages for Grotta Azzurra, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (38.1, 14.46) (15km away)
October Averages
Sea Temperature
24°C
75°F · Range: 22.1–25.7°C
Air Temperature
22°C
71°F
Wind Speed
7.27 m/s
14.1 knots
Atmospheric Pressure
1018.1 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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