Moso Island lies within Havannah Harbour in the South Pacific Ocean, a sheltered setting that supports a varied mix of site types across six locations in Fin's database. These range from the shallow, beginner-friendly Coral Gardens and the limestone shore entry at Top Rock through to the deeper Tranquillity Bommies and the fast-moving Moso Drift Dive, which suits intermediate divers comfortable with strong currents. Visibility across sites typically runs between fifteen and forty metres. The Tranquillity House Reef drops steeply from shore and also offers cave and pinnacle terrain. Green sea turtles are frequently recorded, and thermal vents are present at the drift site.
Monthly water temperature across Moso Island's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures are warmest from January through April and drop to their coolest in August and September, though the range is moderate and diving is comfortable year-round. Cyclone season runs from December through April, and conditions at exposed sites such as Moso Drift Dive are particularly tide-dependent, requiring careful timing.
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Water temperature around Moso Island ranges from about 26°C in August to 29°C in January, based on satellite sea-temperature data for its dive sites.
In the warm season (about 29°C) a rash guard or 3mm shorty is comfortable in Moso Island; in the coldest months (about 26°C) step up to a 3mm full suit.
Fin maps 6 sites in Moso Island (4 scuba diving sites and 2 snorkelling spots).
4 more sites to explore
