Advanced
    Similan Islands, Thailand
    Mu Ko Similan

    Deep Six

    Best months: Jan–May

    Protected Area

    Mu Ko Similan

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Deep Six 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
    StandoutExceptional marine biodiversity

    Deep Six in the Similans is an advanced drift dive, best tackled when the currents are running. We drop onto large granite boulders forming swim-throughs and small caves, often sheltering white-tip reef sharks and resting leopard sharks. Keep an eye out in the blue for schooling fusiliers and trevally. It’s a site for experienced divers comfortable with surge and navigating cracks in the rock.

    Today06:1818:1611h 58m daylightGolden hour 17:48

    Reviews for Deep Six

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for Deep Six

    Deep Six Ocean Conditions

    Monthly averages for Deep Six, 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)

    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 Deep Six

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

    Back to Similan Islands