Rarotonga, Cook Islands

    Avarua Passage

    Best months: Jan–May

    Why dive here

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

    Avarua Passage is a real sleeper, often overlooked for the flashier outer reef sites, but we’re always keen to get in here. Dropping down from Edna’s Anchor, you follow the reef edge along a sandy channel, often feeling a gentle push towards the harbour. The coral formations here, particularly the large branching acropora, create countless hideouts. We’ve had some cracking encounters with robust scorpionfish tucked into crevices and watched moray eels peeking out from under plate corals. Our favourite time to dive Avarua Passage is early morning. That’s when you’ll often catch the Marbled Parrotfish in their mating rituals, a swirling, bumping ballet of blues and greens against the sand. Look closely for the smaller stuff too: we’ve spotted dew-drop cowries clinging to their hosts and the tiny Midget Chromis darting among the coral branches. Visibility usually holds around 25-30m, giving you a clear view of the sandy bottom where you might spot a flounder or even a sleeping Humphead Wrasse. This site is a calm, easy dive, perfect for photographers wanting to take their time with macro subjects or anyone who appreciates the subtle beauty of a healthy inner reef.

    Today05:1317:4112h 28m daylightGolden hour 17:11

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    Conditions

    Ocean conditions, forecast and tides for Avarua Passage

    Avarua Passage Ocean Conditions

    Monthly averages for Avarua Passage, 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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