Raja Ampat, Indonesia
    TAMAN WISATA PERAIRAN KEPULAUAN RAJA AMPAT

    Koh

    Best months: Dec–Apr

    Protected Area

    TAMAN WISATA PERAIRAN KEPULAUAN RAJA AMPAT

    Why dive here

    With 236+ marine species recorded in the area - including blacktip reef sharks, manta rays, mobula rays (devil rays), pygmy seahorses and sea turtles - Koh offers some of Raja Ampat's richest diving. Water ranges 29-30°C, warmest May, November, December.

    Best timeDec–Apr
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeBlacktip Reef Sharks, Manta Rays, Mobula Rays (Devil Rays), Pygmy Seahorses and Sea Turtles · 236+ species recorded
    Water29-30°C · warmest May, November, December
    StandoutExceptional marine biodiversity

    Koh offers a quieter dive, often bypassed for Raja Ampat’s louder attractions, but we think it’s worth a look. The Ocellated Cardinalfish are everywhere, darting in and out of the corals, and we’ve spent entire safety stops just watching them. Keep an eye out for the Snakehead Cowrie; they’re more elusive, but we’ve spotted them tucked away in crevices. It's a relaxed drift, suitable for divers who prefer exploring the smaller stuff over big pelagics. We’d suggest it as a good second dive of the day, when you want to slow down and really observe.

    Safety Notes

    Strong currents typical this month (avg 35 cm/s). Good buoyancy control essential.

    Today06:0118:0812h 7m daylightGolden hour 17:41

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    Conditions

    Ocean conditions, forecast and tides for Koh

    Koh Ocean Conditions

    Monthly averages for Koh, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-0.5, 130.6) (0km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.2–30.9°C

    Current Speed

    34.71 cm/s

    Direction: NW (311.5°)

    Chlorophyll-a

    0.138 mg/m³

    Clear water

    Salinity

    34.33 PSU

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

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