Singapore's diving takes place in the warm, silty waters of the Singapore Strait, where heavy port traffic and land reclamation keep visibility modest and variable. All sites are reached by boat, with depths ranging from shallow reef flats to around thirty metres. The site mix covers natural reef, seagrass, muck, wall, drift, artificial reef, and wreck diving, making it one of the more varied lineups for a small national database. Macro life is the main draw, with nudibranchs well represented across sites, alongside broadclub cuttlefish, bluespotted fantail rays, green sea turtles, and blacktip reef sharks. Water temperature stays warm throughout the year, dipping only slightly in the cooler months.
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Monthly water temperature across Singapore's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature is consistently warm year-round, cooling only marginally in the early months of the year. Conditions improve from March through October, when calmer seas give better visibility across sites. Boat traffic is a constant factor regardless of season, so surface marker buoy discipline matters.
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Water temperature around Singapore ranges from about 27°C in February to 30°C in April, based on satellite sea-temperature data for its dive sites.
With water around 27–30°C, a rash guard or 3mm shorty works in Singapore year-round.
Fin maps 4 sites in Singapore (4 scuba diving sites and 2 snorkelling spots, with some suited to both).
