Ha'apai Group, Tonga
    Nomuka SMA

    MESNA

    Best months: Jan–Dec

    Protected Area

    Nomuka SMA

    Why dive here

    With 289+ marine species recorded in the area - including barracuda, blacktip reef sharks, giant moray eels, humpback whales and whitetip reef sharks - MESNA offers some of Ha'apai Group's richest wreck diving. Water sits around 27°C.

    Marine lifeBarracuda, Blacktip Reef Sharks, Giant Moray Eels, Humpback Whales and Whitetip Reef Sharks · 289+ species recorded
    Water27°C · warmest January, February, March
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    The wreck of the Mesna, a substantial steamship from 1917, now rests on Hakaufisi Reef. We’ve found her a fascinating dive, especially for those who appreciate a wreck with history. At 117 meters long, there’s plenty to explore, from the exposed portions of the hull to the superstructure that’s become a home for all sorts of reef fish. You'll often spot schools of snapper darting in and out of the metalwork, and the coral growth, while not as vibrant as a dedicated reef, adds a unique texture to the ship's skeleton. It's a great choice for divers interested in both maritime history and the resilient marine life that colonises artificial reefs.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today05:5617:3011h 34m daylightGolden hour 17:00

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    Conditions

    Ocean conditions, forecast and tides for MESNA

    MESNA Ocean Conditions

    Monthly averages for MESNA, sourced from NOAA buoy data - nearest station: Open-Meteo grid (-19.81, -174.37) (0km away)

    August Averages

    Sea Temperature

    27.47°C

    81°F

    Air Temperature

    23.32°C

    74°F

    Wind Speed

    9.13 m/s

    17.7 knots

    Atmospheric Pressure

    1016.4 hPa

    Based on 5 years of monitoring data · Data sources: NOAA NDBC

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