DivePlnr
    Koh Racha Yai dive site
    17m
    Beginner
    Similan Islands, Thailand
    กำหนดพื้นที่เกาะราชาใหญ่ เกาะราชาน้อย ตำบลราไวย์ อำเภอเมืองภูเก็ต จังหวัดภูเก็ต

    Koh Racha Yai

    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 - Koh Racha Yai 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 Racha Yai offers easy diving, a good spot for newer divers or those getting back in the water. The maximum depth of 17 meters means plenty of bottom time. Expect to see smaller reef fish darting around. It’s a comfortable, straightforward dive.

    Typical Koh Racha Yai 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.

    Today06:1418:1411h 59m daylightGolden hour 17:46

    Nearest Dive Centres to Koh Racha Yai

    Dive shops near Koh Racha Yai

    Aquasub

    20km away
    Phone

    Tommy’s Dive Center Phuket

    21km away
    Web
    Phone
    Courses

    Aum Scuba

    21km away
    Web
    Phone

    Amazing Phuket adventures

    22km away
    Web
    Courses

    Local Dive Thailand

    22km away
    Web
    Phone
    Courses
    Rental

    Nama Freediving Phuket

    22km away
    Web
    Phone
    Courses
    View all dive centres in Similan Islands

    Reviews for Koh Racha Yai

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for Koh Racha Yai

    Koh Racha Yai Ocean Conditions

    Monthly averages for Koh Racha Yai, 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)

    Check travel advisory for Thailand

    Plan & book

    Ways to dive Similan Islands, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Similan Islands

    Places to stay

    via Booking.com

    Hotels and dive resorts near Similan Islands.

    Search stays in Similan Islands

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near Koh Racha Yai

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Similan Islands