Kos
Diving in Kos offers a unique Aegean Sea experience, characterized by fascinating underwater volcanic topography, including caves, tunnels, and dramatic drop-offs. The island's waters are a blend of clear visibility and a rich history, with divers exploring sites that showcase both vibrant marine ecosystems and ancient pottery fragments resting on the seabed. With a handful of dedicated dive sites, the experience is intimate and well-managed, focusing on quality over quantity and revealing the distinct geological and historical character of the Dodecanese islands.
The general diving conditions in Kos are excellent, particularly from late spring to early autumn, with warm water temperatures and visibility often exceeding 20 meters. Currents are typically mild, making it an ideal destination for divers of all certification levels, from beginners completing their first open water dives to experienced divers seeking unique cavern and reef explorations. Divers should visit Kos to combine a classic Greek island holiday with the serene beauty and intriguing underwater landscapes of the Mediterranean.
Top Sites
Frequently Asked Questions
What's the most popular dive site in Kos, Greece?
While there are several great spots, a popular type of dive in Kos, Greece, involves the unique volcanic rock formations and caverns, such as those found around Kefalos. These sites are famous for their dramatic underwater architecture, swim-throughs, and bubble reefs created by volcanic gases. Their accessibility and the high concentration of marine life like groupers, moray eels, and octopus make them a favourite for most visiting divers.
What are the good and less popular dive sites in Kos, Greece?
Well-known sites in Kos, Greece, are typically easily accessible reefs and caverns known for reliable marine life. For a less-crowded experience, ask dive centers about trips to the nearby volcanic islet of Nisyros or the sponge-diving island of Kalymnos. These special day trips often reveal more pristine reefs, dramatic wall dives, and a quieter underwater environment away from the main tourist hubs.
What water temperature is it like throughout the year diving in Kos, Greece?
Water temperatures in Kos, Greece, vary significantly by season. In the peak summer months (July-August), expect warm waters of 23-26°C (73-79°F). During the shoulder seasons of May-June and September-October, temperatures range from 19-22°C (66-72°F). In the winter, the water cools down considerably to around 15-17°C (59-63°F), making diving a much colder affair.
When is the best time to visit Kos, Greece?
The best time for diving in Kos, Greece, is from June to September. During these months, you'll experience the warmest water temperatures, excellent visibility, and calm sea conditions. May and October are also great options, offering a good balance of pleasant weather, fewer crowds, and comfortable diving conditions, though the water will be slightly cooler than in mid-summer.
What's the visibility like during the dive season in Kos, Greece?
During the main dive season (May to October), underwater visibility in Kos, Greece, is generally excellent. Divers can typically expect clear water with visibility ranging from 20 to 30 meters (65 to 100 feet). On exceptionally calm days, it can even exceed this. Visibility may be temporarily reduced after periods of strong wind, but this is uncommon during the summer months.
Are there any seasonal migrations or special events (e.g., manta rays, whale sharks) in Kos, Greece?
Diving in Kos, Greece, does not feature large pelagic migrations like manta rays or whale sharks. The focus is on the resident Mediterranean ecosystem. However, seasonal encounters can include loggerhead turtles (Caretta caretta) during the summer breeding season. If you are exceptionally lucky, you might spot the critically endangered Mediterranean monk seal, a rare but incredible sighting in these waters.
What marine life can I expect to see in Kos, Greece?
In Kos, Greece, you can expect to see a variety of Mediterranean marine life. Common sightings include groupers, moray eels, octopus, cuttlefish, barracuda, and large schools of damselfish and bream. The rocky reefs are home to scorpionfish, nudibranchs, and various crustaceans. In sandy areas, look for stingrays and flounder. The volcanic topography provides excellent habitats for these species.
What thickness wetsuit should I wear in Kos, Greece?
For peak summer (July-August) in Kos, Greece, a 3mm or 5mm shorty or full suit is comfortable. In the shoulder months (May-June, September-October), a 5mm full wetsuit is recommended as the water is cooler. If you plan to dive in the off-season from November to April, a 7mm wetsuit, possibly with a hood and gloves, is necessary to stay warm in the colder water.
How do I get to Kos, Greece?
To get to Kos, Greece, most travelers fly into Kos International Airport (KGS), which has numerous direct charter flights from Europe during the summer. Year-round connections are available via Athens. Alternatively, Kos is a major ferry hub in the Dodecanese, with frequent services from Athens (Piraeus) and nearby islands like Rhodes and Kalymnos. On the island, rental cars and taxis are widely available.
Should I book a liveaboard or stay on shore in Kos, Greece?
You should stay on shore in Kos, Greece. The dive sites are all easily accessible via daily boat trips from local dive centers, making a liveaboard unnecessary and generally unavailable for this specific island. A shore-based holiday allows you to enjoy the island's vibrant culture, cuisine, and other attractions in addition to your daily diving excursions, offering a more well-rounded travel experience.