Grabonissi
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
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
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
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.
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.
Score: 7.1/10
Waves: 1.1m (4.45s), Wind: 15.5 m/s
Score: 6.5/10
Waves: 1.18m, Wind: 16 m/s
Seasonal Analysis for GrabonissiAlpha
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
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Grabonissi
Ideal Conditions for Grabonissi
Water Temp
24.5°C / 76.1°F
August
Visibility
12.0m / 39.4ft
May
Wave Height
1.9m / 6.2ft
December
Wave Period
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.
Last updated: 1 min. ago - Jun 22, 2026