Skip to content
Go to Dive Champ home pageDive Champ LogoDive Champ

Rt Kosaca

Kosaca is located at the beginning of Grgur Island, just a 15-minute journey away. This dive spot is ideal for both beginner divers and those with limited experience.

Underwater, you'll be treated to a vibrant display of marine life. Expect to encounter nudibranchs, octopuses, and lobsters. If you cast your gaze into the blue, you may also catch sight of schools of sea breams and salemas.

Similar to other dive sites in this area, Kosaca features a wall with multiple terraces. These terraces offer divers the opportunity to choose their desired depth and explore different species of nudibranchs, octopuses, and lobsters. Don't forget to glance into the blue waters, where you can spot schools of seabreams and salemas. Keep a lookout for painted combers as well, as they often indicate the presence of octopuses.

With excellent visibility of 22 meters and a maximum depth of 23 meters, Kosaca guarantees an exceptional diving experience. This dive site is suitable for divers of all levels, from beginners to advanced. Located in the Municipality of Lopar, Primorje-Gorski Kotar County, Croatia, it offers divers the chance to explore the breathtaking underwater world of Croatia.

Diving Conditions Score for Rt Kosaca

8.7
Very Good

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

Dive Site Overview for Rt Kosaca

Depth

23m

Visibility

22m

Experience Level

beginner
advanced

Weather Conditions for Rt Kosaca

Wave Height

0.02m

Wind Speed

2.3 m/s

Water Temp

21.7°C

Visibility

23.86km

Cloud Cover

0%

Wave Period

2.15s

Air Temperature

24.6°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Rt Kosaca
Alpha

Dive Score Chart for Rt Kosaca

Best time to dive: 17:00 with score 9.629999999999999/10. Water conditions: Waves 0.04m, Wind 1.1 m/s.Best night dive time: 1:00 with score 9.133333333333333/10.

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

Sunrise at Rt Kosaca: 06:00
Sunset at Rt Kosaca: 18:00

Optimal diving conditions at Rt Kosaca 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
17:00

Score: 9.6/10
Waves: 0.04m (2s), Wind: 1.1 m/s

🌙
Best Night
1:00

Score: 9.1/10
Waves: 0.04m, Wind: 1.8 m/s

Seasonal Analysis for Rt Kosaca
Alpha

Historical patterns and best seasons for diving at Rt Kosaca

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 Rt Kosaca

Winter

Avg. Score: 8.5/10

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

Best Months for Rt Kosaca

January
Score: 8.8
February
Score: 8.4
December
Score: 8.3

Ideal Conditions for Rt Kosaca

Water Temp

Thermometer Emoji

27.5°C / 81.5°F

July

Visibility

Telescope Emoji

16.1m / 52.8ft

January

Wave Height

Wave Emoji

0.7m / 2.3ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Rt Kosaca

Rt Kosaca shows typical northern hemisphere patterns with July being the warmest month (27.5°C) and January the coldest (3.2°C). The calmest conditions typically occur in January with average wave heights of 0.7m 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 7, 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.

50 Dive sites near Rt Kosaca in

Find more dive sites in Croatia

CroatiaCroatia

Croatia

Got feedback?

Help us improve this dive site by giving us feedback.