Rarotonga, Cook Islands

    Arorangi Passage

    Best months: Jan–May

    Why dive here

    With 134+ marine species recorded in the area - including humpback whales and pufferfish - Arorangi Passage 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

    Arorangi Passage on Rarotonga is one of those dives we return to time and again, despite its reputation for serious currents. We’ve had dives here where you practically fly through the passage, which is exhilarating but not for the faint of heart. It’s the smallest and shallowest of Rarotonga’s passages, dredged out recently for smaller boats, but don't let that fool you. The action here can be immense. Our favourite way to dive Arorangi is on an incoming tide. You can drift over the sandy bottom, spotting Ambon pufferfish poking out from crevices and the occasional snakehead cowrie clinging to the reef. The real magic, though, is on the outer reef walls. Here, the current often lessens, letting you explore the canyons and swim-throughs. We’ve found lionfish lurking in the shadows and small reef sharks patrolling the drop-off. Keep an eye out for humphead unicornfish schooling in the bluer water, their iridescent scales flashing as they navigate the flow. The coral here, particularly some robust staghorn, has really bounced back. This dive is definitely for those who enjoy a bit of drift and don't mind a strong workout. Expect to cover ground quickly and see a lot of fish activity, especially triggerfish and parrotfish, adapting to the surge.

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

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    Conditions

    Ocean conditions, forecast and tides for Arorangi Passage

    Arorangi Passage Ocean Conditions

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

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    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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