Diving atMourtias Reef (Greece)
Mourtias Reef, nestled in Greece, offers inviting dive conditions with surface air temperatures often reaching 28.7°C (83.7°F) during peak summer months. Average wave heights can drop to a minimal 0.44 m (1.4 ft) in June, suggesting calmer seas. Water temperatures observed around 26°C (79°F) in August create a comfortable and clear environment for divers to explore the reef's distinctive topography.
Evening condition tracking at Mourtias Reef features an air temperature of 14.6°C. We have recorded wave heights measuring 0.12m during this period. These figures outline the environmental parameters currently present.
Dive Site Coordinates
39.1397, 23.8327
Key Dive Site Facts
Dive Site Overview
Mourtias Reef presents a compelling exploration opportunity within the Alonissos region, distinguished by its unique dual topographic structure. An underwater landscape unfolds with a pronounced wall descending, providing conditions for divers seeking deeper exploration.
Above this impressive drop-off, an expansive plateau extends, catering to a wider range of certification levels, including less experienced divers. Geological formations throughout the reef create varied habitats, suitable for an array of smaller marine life. Intricate environments here provide ample opportunities for macro photography enthusiasts and those focused on detailed observation of the Mediterranean ecosystem.
Primarily, the site showcases natural underwater architecture, rather than artificial structures or major wrecks. While not defined by a historical wreck, the Alonissos region is globally significant for underwater archaeology, with the nearby Peristera shipwreck offering a distinct historical dive for those interested in ancient amphorae and submerged cultural heritage.
Instead, Mourtias Reef invites a focus on its vibrant reef life and captivating natural contours. The wall section's maximum depth approaches thirty meters, with shallower plateau areas sitting around ten to fifteen meters.
Best Time to Dive
June stands out as an excellent month for diving at Mourtias Reef, indicated by an 'Excellent' dive score in our system data. During this period, average air temperatures are a pleasant 25.07°C (77.1°F), paired with minimal rainfall averaging just 0.59 mm. Ocean conditions are typically calm, with wave heights at their lowest point around 0.44 m (1.4 ft) and moderate winds averaging 17.28 km/h (10.7 mph). Diving remains consistently good through the summer into autumn, with water temperatures around 26°C (79°F) in August, although wave heights and wind speeds may vary. Consider the shoulder months of May and October for good conditions and potentially fewer crowds.
Climate Historical Averages
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Explorers at Mourtias Reef will discover a distinctive underwater landscape characterized by both a deep wall and a shallower plateau. The wall section extends from approximately 20 m (66 ft) to its maximum depth, offering opportunities for advanced recreational diving. Above this, a broad plateau area sits in the 10 to 15 m (33 to 49 ft) range, ideal for less experienced divers or for longer, shallower profiles. Water temperatures in the summer can be around 26°C (79°F) at the surface, cooling slightly to approximately 25°C (77°F) at a depth of 20 m. Visibility is generally favorable, contributing to a clear view of the reef's features and its resident marine life. While strong currents are not consistently reported for Mourtias Reef specifically, conditions can vary.
Dive Difficulty & Safety Guidelines
Diving at Mourtias Reef requires adherence to standard safety practices and a mindful approach to its varied depths. Divers aiming to visit the deeper wall sections, reaching up to 30 m (100 ft), should possess an Advanced Open Water Diver certification or equivalent training. For those exploring the shallower plateau areas, an Open Water Diver certification is typically sufficient. While no specific inherent hazards are consistently reported for Mourtias Reef, maintaining excellent buoyancy control is always crucial, particularly when navigating along the wall, to protect the delicate reef ecosystem. Always dive with a reputable local guide who understands the site's specific characteristics and current conditions.
Recommended Equipment
No verified equipment items yet.
Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
Conditions in the coming days are expected to stay within a similar temperature range.
Factors such as dive duration, depth, and activity level can influence how warm a diver feels underwater. Surface intervals may feel noticeably cooler once you exit the water.
5-7mm wetsuit typically balances flexibility and thermal protection in these temperatures. A thermal robe or jacket is recommended between dives. Divers preparing to enter the water at Mourtias Reef will likely find temperatures around 16°C (60°F) today. Surface air temperatures are resting at 15°C (58°F).
Conditions last reviewed: 18:00 using the latest environmental data.
Dive Logistics & Preparation
Hyperbaric Chamber
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Entry Requirements
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Currency
EUR
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Marine Life at Mourtias Reef
Beneath the surface topography of Mourtias Reef, divers can observe a variety of macro life. Look closely for different species of nudibranchs, such as Flabellina and Hervia, often found clinging to the reef's surfaces. Giant fan mussels are also a notable sight within this underwater landscape. While specific data on larger marine species is limited for Mourtias Reef, the surrounding Alonissos waters are known for a diverse Mediterranean ecosystem, suggesting possibilities for encounters with blennies, cuttlefish, and other typical reef residents.
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Frequently Asked Questions
What are the primary depths at Mourtias Reef?
Mourtias Reef features a prominent wall extending to 30 meters, alongside a shallower plateau typically found between 10 and 15 meters. This range caters to both Open Water and Advanced Open Water certified divers.
What kind of dive site is Mourtias Reef?
It is a reef dive characterized by a distinctive wall and a plateau. This dual topography provides varied environments to explore, from deeper sections perfect for experienced divers to shallower areas suitable for all levels.
What is the typical water temperature?
During summer, water temperatures can be around 26°C (79°F) at the surface. Expect a slight decrease with depth, reaching about 25°C (77°F) at 20 m (66 ft).
What marine life can I see at Mourtias Reef?
The reef is home to diverse macro life, including various nudibranch species like Flabellina and Hervia. You may also spot fan mussels embedded in the substrate.
Is Mourtias Reef suitable for beginner divers?
The shallower plateau area, ranging from 10 to 15 meters, is well-suited for Open Water certified divers. However, exploring the deeper wall sections requires more advanced certification and experience.
When is the best time of year to dive Mourtias Reef?
June offers excellent conditions with pleasant air temperatures, calm waters, and minimal rain. The entire summer season generally provides good diving, with comfortable water temperatures and often clear visibility.
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