DivePlnr
    Racha Noi, Manta Reef dive site
    reef
    17m
    Beginner
    Similan Islands, Thailand
    กำหนดพื้นที่เกาะราชาใหญ่ เกาะราชาน้อย ตำบลราไวย์ อำเภอเมืองภูเก็ต จังหวัดภูเก็ต

    Racha Noi, Manta Reef

    Best months: Jan–May

    Protected Area

    กำหนดพื้นที่เกาะราชาใหญ่ เกาะราชาน้อย ตำบลราไวย์ อำเภอเมืองภูเก็ต จังหวัดภูเก็ต

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Racha Noi, Manta Reef 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 17m
    StandoutExceptional marine biodiversity

    Racha Noi, Manta Reef is a pretty relaxed spot, perfect if you’re just getting comfortable with diving in the Similans. We’ve found it’s usually quite calm here, making it a good choice for those first few dives of a trip. You'll often spot batfish schooling around the bommies and we've regularly seen reef sharks cruising past in the distance. While it’s called "Manta Reef," don’t get your hopes up too high for mantas – they do pass through, but it's not a guaranteed sighting.

    Typical Racha Noi, Manta Reef 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.

    Today06:1418:1412h 0m daylightGolden hour 17:46

    Nearest Dive Centres to Racha Noi, Manta Reef

    Dive shops near Racha Noi, Manta Reef

    Aquasub

    29km away
    Phone

    Tommy’s Dive Center Phuket

    31km away
    Web
    Phone
    Courses

    Amazing Phuket adventures

    31km away
    Web
    Courses

    Aum Scuba

    31km away
    Web
    Phone

    Local Dive Thailand

    32km away
    Web
    Phone
    Courses
    Rental

    Nama Freediving Phuket

    32km away
    Web
    Phone
    Courses
    View all dive centres in Similan Islands

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    Conditions

    Ocean conditions, forecast and tides for Racha Noi, Manta Reef

    Racha Noi, Manta Reef Ocean Conditions

    Monthly averages for Racha Noi, Manta Reef, 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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