Similan Islands, Thailand
    Mu ko Lanta

    Ko Haa Nua 1 - The Chimney

    Best months: Jan–May

    Protected Area

    Mu ko Lanta

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Ko Haa Nua 1 - The Chimney offers some of Similan Islands's richest pinnacle 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
    CharacterPinnacle dive
    StandoutExceptional marine biodiversity

    Ko Haa Nua 1, known as The Chimney, offers a straightforward dive around a sizable pinnacle. The site features a swim-through that breaks the surface, allowing for an interesting ascent into open air. We typically see a good variety of reef fish here, along with occasional pelagics passing by. It's a relaxed dive, suitable for most experience levels looking for an easy exploration.

    Today06:1218:1212h 0m daylightGolden hour 17:44

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    Conditions

    Ocean conditions, forecast and tides for Ko Haa Nua 1 - The Chimney

    Ko Haa Nua 1 - The Chimney Ocean Conditions

    Monthly averages for Ko Haa Nua 1 - The Chimney, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)

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    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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