DivePlnr
    Koh Bida Nai dive site
    17m
    Beginner
    Similan Islands, Thailand
    Krabi Environmental Protected Area

    Koh Bida Nai

    Best months: Jan–May

    Protected Area

    Krabi Environmental Protected Area

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Koh Bida Nai offers some of Similan Islands's richest 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
    Charactermax 17m
    StandoutExceptional marine biodiversity

    Koh Bida Nai in the Similans is a good, easy dive, perfect for newer divers. The maximum depth of 17m keeps things relaxed. We often see leopard sharks resting on the sandy bottom and schools of snapper hanging around the reef's edge. It's a comfortable spot to build confidence, with typically gentle conditions.

    Typical Koh Bida Nai Dive Profile

    10m20mSafety Stop0m17m max~50 min estimated bottom time

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

    Safety Notes

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:1318:1211h 59m daylightGolden hour 17:44

    Nearest Dive Centres to Koh Bida Nai

    Dive shops near Koh Bida Nai

    Island Divers

    9km away

    Phi Phi Scuba Diving Center

    9km away

    Barakuda Dive Centre

    9km away
    Courses

    Profun Divers Academy

    9km away
    Web
    Phone

    Sea Frog

    9km away

    Phi Phi Diving

    9km away
    Web
    View all dive centres in Similan Islands

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    Conditions

    Ocean conditions, forecast and tides for Koh Bida Nai

    Koh Bida Nai Ocean Conditions

    Monthly averages for Koh Bida Nai, 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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