15-30m
    Rarotonga, Cook Islands

    Arorangi Drop Off

    Best months: Jan–May

    Why dive here

    With 134+ marine species recorded in the area - including humpback whales and pufferfish - Arorangi Drop Off offers some of Rarotonga's richest reef diving. Water ranges 24-28°C, warmest February, March, April.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeHumpback Whales and Pufferfish · 134+ species recorded
    Water24-28°C · warmest February, March, April
    CharacterReef dive · max 15-30m

    The Arorangi Drop Off is one of our favourite spots on Rarotonga's west coast, particularly for those willing to embrace a little current. We love how the reef here transitions from a gently sloping coral garden into a proper wall, carved with overhangs and small caves. It’s a site that feels alive, often with schools of Blackfin Chromis dancing above the coral bommies. We’ve found the currents at Arorangi can be quite playful, which often brings in the bigger pelagics. Keep an eye out for eagle rays gliding past, their silhouettes crisp against the blue. You’ll also frequently spot Trevallys patrolling the edge and, if you’re lucky, a lionfish tucked into a crevice, their fins fanning out dramatically. For macro enthusiasts, the colourful Dot and Dash Butterflyfish are plentiful, and we’ve even found the elusive Flasher Scorpionfish here, perfectly camouflaged. We’d suggest diving Arorangi in the morning; the light hitting the wall at that time is truly something else, illuminating the olive anthias and making the corals pop. It’s a dive that rewards attentive divers, offering both wide-angle drama and intricate details.

    Typical Arorangi Drop Off Dive Profile

    5m10m15mSafety Stop0m15m 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.

    Today05:1317:4112h 28m daylightGolden hour 17:12

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    Conditions

    Ocean conditions, forecast and tides for Arorangi Drop Off

    Arorangi Drop Off Ocean Conditions

    Monthly averages for Arorangi Drop Off, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-21.2, -159.82) (1km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    24°C

    76°F · Range: 23.3–26°C

    Air Temperature

    22°C

    72°F

    Wind Speed

    9.54 m/s

    18.5 knots

    Atmospheric Pressure

    1016.5 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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