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Big Rock

Big Rock, located at the entrance of Goli's Island, is a must-visit dive site for divers exploring the waters of Croatia. Just a 20-minute boat ride away, this site is easily accessible for all levels of divers. As you anchor in the shallow part in front of the island, you can already catch a glimpse of the breathtaking underwater world where the drop-off begins.

The visibility at Big Rock is impressive, reaching up to 18 meters, allowing divers to fully immerse themselves in the vibrant marine life. This dive site offers a diverse range of encounters, including scorpionfish, various species of sea bream, nudibranchs, octopus, conger eels, mullet, damselfish, and wrasse. Every moment underwater is filled with awe-inspiring marine creatures.

Exploring the western side of Big Rock, divers will be treated to a wall that drops down to a maximum depth of 40 meters. On your right side, at around 40 meters, you'll come across a small rock adorned with colorful gorgonians, sponges, fish, lobsters, and conger eels. It's a mesmerizing sight that showcases the diversity and beauty of the underwater ecosystem.

On the eastern side, the wall extends even deeper, providing an intriguing sense of depth. As divers swim away from the little rock and look up, they will witness the sun's rays piercing through the water, illuminating the wall with a magical light show. It's the perfect opportunity to conduct a safety stop while leisurely exploring the shallow area of Big Rock.

Big Rock is an ideal dive site for all levels of divers, from beginners to advanced and expert divers. Its close proximity to the Admission Discharge Section (Quarantine) in the Municipality of Lopar, Primorje-Gorski Kotar County, Croatia, makes it easily accessible for diving enthusiasts in the area.

Immerse yourself in the wonders of Big Rock, and experience the thrill of diving in Croatia's pristine waters.

Diving Conditions Score for Big Rock

7.3
Good

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

Dive Site Overview for Big Rock

Depth

25m

Visibility

18m

Experience Level

beginner
advanced
expert

Weather Conditions for Big Rock

Wave Height

0.22m

Wind Speed

20.1 m/s

Water Temp

25.2°C

Visibility

40.36km

Cloud Cover

67%

Wave Period

2.25s

Air Temperature

33.7°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Big Rock
Alpha

Dive Score Chart for Big Rock

Best time to dive: 6:00 with score 7.979432624113475/10. Water conditions: Waves 0.16m, Wind 23.3 m/s.Best night dive time: 21:00 with score 7.735977777777777/10.

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

Sunrise at Big Rock: 06:00
Sunset at Big Rock: 18:00

Optimal diving conditions at Big Rock 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
6:00

Score: 8.0/10
Waves: 0.16m (2.35s), Wind: 23.3 m/s

🌞
Safest Overall
8:00

Score: 8.0/10
Waves: 0.14m (2.3s), Wind: 18.1 m/s

🌙
Best Night
21:00

Score: 7.7/10
Waves: 0.26m, Wind: 3.4 m/s

Seasonal Analysis for Big Rock
Alpha

Historical patterns and best seasons for diving at Big Rock

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 Big Rock

Winter

Avg. Score: 9.9/10

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

Best Months for Big Rock

January
Score: 10.0
February
Score: 9.9
December
Score: 9.8

Ideal Conditions for Big Rock

Water Temp

Thermometer Emoji

24.5°C / 76.1°F

June

Visibility

Telescope Emoji

20.1m / 65.9ft

October

Wave Height

Wave Emoji

0.2m / 0.7ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Big Rock

Big Rock shows typical northern hemisphere patterns with June being the warmest month (24.5°C) and December the coldest (20.5°C). The calmest conditions typically occur in January with average wave heights of 0.2m 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 22, 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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