Dumaguete, Philippines
    San Juan Siquijor

    Sunken Island

    Best months: Jan–Mar

    Protected Area

    San Juan Siquijor

    Why dive here

    With 496+ marine species recorded in the area - including barracuda, blacktip reef sharks, blue-spotted stingrays, bull sharks and octopuses - Sunken Island offers some of Dumaguete's richest wreck diving. Water ranges 28-30°C, warmest June, July, October.

    Best timeJan–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blacktip Reef Sharks, Blue-Spotted Stingrays, Bull Sharks and Octopuses · 496+ species recorded
    Water28-30°C · warmest June, July, October
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    Sunken Island, just off Dumaguete, is a decent outing for those who like a good wreck. It’s less a single vessel and more a jumble of concrete blocks and scattered debris, but don’t let that put you off. Over the years, this artificial reef has really come into its own, drawing in a surprising number of critters. We’ve seen everything from schooling snapper to feathery crinoids clinging to the rebar. It’s a site that rewards a slow poke, poking around the nooks and crannies to see what’s hiding. It’s generally a pretty calm dive, good for most experience levels looking for something a bit different from the usual reef hop.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today05:3517:3311h 58m daylightGolden hour 17:05

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    Conditions

    Ocean conditions, forecast and tides for Sunken Island

    Sunken Island Ocean Conditions

    Monthly averages for Sunken Island, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (9.23, 123.47) (3km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29–31.3°C

    Air Temperature

    27°C

    81°F

    Wind Speed

    4.36 m/s

    8.5 knots

    Atmospheric Pressure

    1009.6 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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