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

Grabonissi

Discover the enchanting dive site near the picturesque island of Nikouria, situated off the coast of the idyllic Gramvonissi. This hidden gem was only unveiled to divers two years ago, offering a captivating underwater experience suitable for all levels of expertise, from snorkelers to seasoned professionals.

Immerse yourself in the vibrant underwater world brimming with colorful marine life as rays of sunlight penetrate the crystal-clear waters, providing excellent visibility of up to 25 meters. While exploring this mesmerizing dive spot, be prepared to encounter mesmerizing schools of fish gracefully gliding past you. Delight in the presence of spiral worms, squid, and elusive moray eels that gracefully emerge from their hiding spots.

For beginners, a stunning moonscape awaits, revealing a plethora of small caves embellished with exquisite coral formations. Dive through a perfectly situated arch, offering an unforgettable experience for novice divers. Those with more experience will relish the opportunity to explore a dramatic drop-off reaching depths over 40 meters. In this area, a textured wall adorned with moray eels, lobsters, and elegant sea fans awaits. Keep an eye out for fascinating octopuses and swift-moving squid, adding to the allure of this captivating underwater realm.

Gramvonissi also offers the extraordinary sight of swim-through pools adorned with vibrant sponges and coral formations, creating a kaleidoscope of colors that is sure to leave divers awestruck. Located in the Naxos Regional Unit, South Aegean, Greece, this dive site showcases the natural beauty and rich biodiversity of the Aegean Sea.

Experience the unparalleled wonders of this dive site that seamlessly blends tranquility, exploration, and natural splendor. Plan your diving adventure in Greece and submerge yourself in the awe-inspiring underwater marvels of Gramvonissi.

Diving Conditions Score for Grabonissi

7.5
Good

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

Dive Site Overview for Grabonissi

Depth

22m

Visibility

25m

Experience Level

beginner
advanced

Weather Conditions for Grabonissi

Wave Height

1.1m

Wind Speed

16.1 m/s

Water Temp

22.3°C

Visibility

39.7km

Cloud Cover

3%

Wave Period

4.35s

Air Temperature

26.2°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Grabonissi
Alpha

Dive Score Chart for Grabonissi

Best time to dive: 9:00 with score 7.126666666666667/10. Water conditions: Waves 1.1m, Wind 15.5 m/s.Best night dive time: 4:00 with score 6.546666666666667/10.

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

Sunrise at Grabonissi: 06:00
Sunset at Grabonissi: 18:00

Optimal diving conditions at Grabonissi 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
9:00

Score: 7.1/10
Waves: 1.1m (4.45s), Wind: 15.5 m/s

🌙
Best Night
4:00

Score: 6.5/10
Waves: 1.18m, Wind: 16 m/s

Seasonal Analysis for Grabonissi
Alpha

Historical patterns and best seasons for diving at Grabonissi

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 Grabonissi

Winter

Avg. Score: 7.9/10

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

Best Months for Grabonissi

January
Score: 8.0
December
Score: 7.9
February
Score: 7.8

Ideal Conditions for Grabonissi

Water Temp

Thermometer Emoji

24.5°C / 76.1°F

August

Visibility

Telescope Emoji

12.0m / 39.4ft

May

Wave Height

Wave Emoji

1.9m / 6.2ft

December

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Grabonissi

Grabonissi shows typical northern hemisphere patterns with August being the warmest month (24.5°C) and January the coldest (7.3°C). The calmest conditions typically occur in December with average wave heights of 1.9m and wave periods of 8.0s. The most comfortable wave conditions are in December 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). April is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during December to February, 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.

27 Dive sites near Grabonissi in

Find more dive sites in Greece

GreeceGreece

Greece

Got feedback?

Help us improve this dive site by giving us feedback.