Marmaris delivers a varied dive programme built around walls, reefs, wrecks and caves, all accessed by boat. Historical curiosity runs alongside marine life: Kadirga Bay holds Ottoman amphorae on the seabed, while the Ottoman Anchor rests on sand at a consistent depth. Signature encounters include the Dusky Grouper, Indian Lionfish and occasional Loggerhead Sea Turtle. Sites range from gentle beginner walls like Sari Mehmet to demanding cave penetrations such as Chimney Cave, suiting a broad spread of experience levels.
Monthly water temperature across Marmaris's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature holds steady through winter and spring before climbing to its warmest in autumn, making the shoulder months of late spring and early autumn particularly attractive. Summer brings the warmest conditions and strong visibility, while late spring and September see the highest concentration of favoured dive days. Year-round diving is feasible, though the cooler winter months may suit those who prefer quieter conditions.
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Water temperature around Marmaris ranges from about 18°C in February to 24°C in October, based on satellite sea-temperature data for its dive sites.
In the warm season (about 24°C) a 3mm full suit is comfortable in Marmaris; in the coldest months (about 18°C) step up to a 5mm suit.
Fin maps 15 sites in Marmaris (15 scuba diving sites and 1 snorkelling spots, with some suited to both).
Across Marmaris's dive sites, May, June, July, August, September and October are most often reported as the best months to visit.
The most consistently observed species are the Turkish Wrasse, Bullseye, Painted Comber, Two-banded Seabream and Goatfish. Dusky Grouper and Indian Lionfish are signature sightings across the majority of sites. Loggerhead Sea Turtle and Green Sea Turtle have also been recorded, though encounters are less frequent.
A good proportion of sites are rated for beginners, including Lighthouse, Sari Mehmet, Kadirga Bay and the Catamaran Wreck. These offer shallow starting depths and manageable conditions. Advanced sites such as Chimney Cave and Cold Water Cave involve cave penetration and are best suited to experienced divers with appropriate training.
All sites in the region are boat-access only. There are no listed shore-entry dive sites. Divers should plan to join a day-boat operation to reach sites, which are spread across the wider Fethiye area and as far as Gemiler Island.
The site mix covers walls, reefs, wrecks, caves and an artificial reef. Wrecks range from the historical Ottoman Anchor to the Coastguard Wreck and the Catamaran Wreck. Cave dives include the vertical chimney passage at Chimney Cave and the thermocline-featuring Cold Water Cave, providing real variety across a single trip.
3 more sites to explore
