Where to dive in September
September is much like August: the Coral Sea, Komodo, Nusa Penida, Bunaken, Sipadan, Koh Tao and Malta (about 26 °C) are in season, and mantas are still reliable at Nusa Penida. It is the stormiest month at Socorro, where a named storm passed within 250 km in 27 of the 30 Septembers.
Make this list yours: add your level, what you want to see and how warm you like the water.
Personalise for SeptemberTop 7 places for September
Bunaken and LembehIndonesia
3 of 3 sites in season. Best April to November.
Water 29°CIntermediate +TurtlesMatch 96
Nusa Penida and LembonganIndonesia
3 of 3 sites in season. Best July to November.
Water 26–27°CIntermediate +MantasMatch 94
KomodoIndonesia
The site is in season. Best April to December.
Water 26–27°CAdvancedReef sharks, TurtlesMatch 98
Sipadan and MabulMalaysia
3 of 3 sites in season. Best April to December.
Water 29°CBeginner +Reef sharks, TurtlesMatch 91
Sharm el-SheikhEgypt
3 of 4 sites in season. Best March to November.
Water 27–28°CIntermediate +Hammerheads likelyMatch 90
Ribbon Reefs and Osprey ReefAustralia
5 of 5 sites in season. Best November.
Water 25°CIntermediate +Reef sharksMatch 86
September, by what you want
Better another month
- Revillagigedo (Socorro): good November to May; water 27–28°C in September.
- Similan Islands: best December to April; water 28–29°C in September.
- Belize atolls: best April to June; water 29–30°C in September.
- Anilao: best November to May; water 28–29°C in September.
Questions about diving in September
Where is the water warmest in September?
Of our trip bases: Belize atolls (about 30°C), Truk Lagoon (about 30°C), Cozumel (about 29°C), on 1991–2020 averages. Each base page shows the typical range for every month.
Where can a new diver go in September?
The best matches for a beginner diver, counting only beginner sites no deeper than 18 m: Malta and Gozo, Sipadan and Mabul, Koh Tao. See all for beginners.
How do you rank these places?
By season (our site seasons and the share of calm days), weather, sites for your level and, when you set them, marine life and water temperature. Typical values are 1991–2020 averages and our site seasons. Always check local conditions with your dive centre.