5-20m
    Similan Islands, Thailand
    กำหนดพื้นที่เกาะราชาใหญ่ เกาะราชาน้อย ตำบลราไวย์ อำเภอเมืองภูเก็ต จังหวัดภูเก็ต

    Banana Bay

    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 - Banana Bay 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 5-20m
    StandoutExceptional marine biodiversity

    Banana Bay, tucked into the Similans, often gets overlooked for some of its flashier neighbours, but we think that’s a mistake. This is our quiet favourite, especially for those days when you just want a relaxed, easy dive after a bit of a current-filled morning elsewhere. The bay itself is a gentle slope, mostly sand, but don't let that fool you. Spend some time really looking, and you’ll be rewarded. We love it for the macro and the sheer chill factor. Think blackspotted sea cucumbers inching along, little striped triplefins perched on coral rubble, and those tiny bicolor blennies popping their heads out of holes. It’s a fantastic spot for photographers who want to slow down and really compose a shot. We’ve often seen big garrupa cruising through the sandy patches, and giant morays peeking from under the scattered coral heads. Our tip: go early or late in the day. The light is softer, and the five-lined snapper schools seem to move more deliberately, making for some lovely silhouettes against the sun. It’s perfect for newer divers building confidence, or anyone who just wants an hour of pure, unhurried underwater observation.

    Typical Banana Bay Dive Profile

    5mSafety Stop0m5m 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.

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

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    Conditions

    Ocean conditions, forecast and tides for Banana Bay

    Banana Bay Ocean Conditions

    Monthly averages for Banana Bay, 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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