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Grotta Byron

Located in Italy, this breathtaking dive site near the Portovenere Canal offers divers a picturesque experience. Lord Byron himself was captivated by its beauty and even drew inspiration for his poems from the serene landscape.

This dive spot is ideal for macro photography enthusiasts, with an abundance of red and blue damselfish and nudibranchs. The starfish-like creatures are a common sight here. Additionally, divers can expect to encounter the magnificent Apogon imberbis, known as the "kings of mullets," as well as sea horses and cnidarians.

Upon reaching the dive site, visitors will marvel at the towering walls that overlook the sparkling sea. One side reveals remnants of an ancient military garrison, while the other side unveils St. Peter's walls. This stunning backdrop transforms Byron's Cave into a truly spectacular bay.

To access the site, divers will anchor their boats on the right-hand side of the cove, above a rocky and sandy seabed approximately 5 meters deep. As they descend to the bottom, divers will be greeted by a wall adorned with numerous gorges, providing shelter for various fish species and invertebrates. Following this wall throughout the dive, divers will eventually reach the tip of a rocky stack where the wall transitions into sandy terrain. Among the commonly spotted marine life in this area are mullets, soles, and turbots. Keep an eye out for Ugo's burrow, a colossal conger eel fondly referred to as the "guardian" of the bay.

As divers continue along the wall, they will encounter organ pipe sponges (Axinella polypoides) and the initial branches of gorgonian coral (Leptogorgia sarmentosa). Further exploration reveals a wide indentation where massive stones serve as shelter for congers, morays, lobsters, and slipper lobsters (Scyllarus arctus). This site also offers an exceptional opportunity for unforgettable night dives.

With a visibility of approximately 9 meters and a maximum depth of 15 meters, this dive site is suitable for divers of all levels, including beginners. Prepare to be enchanted by the underwater wonders that await at this extraordinary location near Grotta di Byron in Italy's La Spezia region.

Diving Conditions Score for Grotta Byron

8.4
Very Good

Very good diving conditions!
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Grotta Byron

Depth

15m

Visibility

9m

Experience Level

beginner

Weather Conditions for Grotta Byron

Wave Height

0.08m

Wind Speed

6.2 m/s

Water Temp

23.7°C

Visibility

43.34km

Cloud Cover

0%

Wave Period

5.25s

Air Temperature

22.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Grotta Byron
Alpha

Dive Score Chart for Grotta Byron

Best time to dive: 7:00 with score 9.59060606060606/10. Water conditions: Waves 0.06m, Wind 1.1 m/s.Best night dive time: 22:00 with score 8.876376811594202/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Grotta Byron: 06:00
Sunset at Grotta Byron: 18:00

Optimal diving conditions at Grotta Byron are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.

🌞
Best Overall
7:00

Score: 9.6/10
Waves: 0.06m (5.5s), Wind: 1.1 m/s

🌙
Best Night
22:00

Score: 8.9/10
Waves: 0.06m, Wind: 3.1 m/s

Seasonal Analysis for Grotta Byron
Alpha

Historical patterns and best seasons for diving at Grotta Byron

The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.

Monthly Dive Score Analysis - Seasonal Diving Conditions

Higher values indicate better diving conditions

Seasonal DiveScore Chart

This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.

Higher values indicate better diving conditions

Best Season for Grotta Byron

Winter

Avg. Score: 8.8/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Grotta Byron

January
Score: 9.2
February
Score: 8.7
December
Score: 8.6

Ideal Conditions for Grotta Byron

Water Temp

Thermometer Emoji

26.1°C / 79.0°F

July

Visibility

Telescope Emoji

17.9m / 58.7ft

January

Wave Height

Wave Emoji

0.4m / 1.3ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Grotta Byron

Grotta Byron shows typical northern hemisphere patterns with July being the warmest month (26.1°C) and January the coldest (4.1°C). The calmest conditions typically occur in January with average wave heights of 0.4m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 20, 2026

Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.

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