DivePlnr
    Ko Usen dive site
    reef
    10-25m
    Similan Islands, Thailand
    Tarutao

    Ko Usen

    Best months: Jan–May

    Protected Area

    Tarutao

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Ko Usen offers some of Similan Islands's richest reef diving. Water ranges 29-31°C, warmest April, May, June.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlacktip Reef Sharks, Eagle Rays, Giant Moray Eels, Whale Sharks and Clownfish · 173+ species recorded
    Water29-31°C · warmest April, May, June
    CharacterReef dive · max 10-25m
    StandoutExceptional marine biodiversity

    Ko Usen offers reef diving in Similan Islands, Thailand, reaching depths of around 10-25m.

    Typical Ko Usen Dive Profile

    5m10mSafety Stop0m10m max~60 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Today06:1018:1112h 0m daylightGolden hour 17:43

    Nearest Dive Centres to Ko Usen

    Dive shops near Ko Usen

    Castaway Divers

    517m away

    Adang Sea Divers

    775m away
    Web
    Courses

    Lotus Dive

    809m away

    blue sea pro

    945m away

    Ko Lipe Diving (SSI)

    977m away
    Web
    Courses

    Tarutao

    1km away
    View all dive centres in Similan Islands

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    Conditions

    Ocean conditions, forecast and tides for Ko Usen

    Ko Usen Ocean Conditions

    Monthly averages for Ko Usen, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    85°F · Range: 28.7–30.4°C

    Current Speed

    5.1 cm/s

    Direction: S (191.3°)

    Salinity

    29.75 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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