Poor Knights Islands, New Zealand
    Cape Rodney-Okakari Point

    Mathesons Bay

    Best months: Jan–Apr

    Protected Area

    Cape Rodney-Okakari Point

    Why dive here

    With 79+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and orcas - Mathesons Bay offers some of Poor Knights Islands's richest reef diving. Water ranges 15-22°C, warmest January, February, March.

    Best timeJan–Apr
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Hammerhead Sharks, Humpback Whales and Orcas · 79+ species recorded
    Water15-22°C · warmest January, February, March
    CharacterReef dive
    StandoutRich in charismatic marine life

    Mathesons Bay is a spot we usually hit when the wind picks up a bit, or when we just want a relaxed dive that still feels like Poor Knights. It's properly sheltered, a calm contrast to some of the more dramatic outer walls. We always enter from the beach; it’s just easier, though you can scramble over the rocks at high tide if you’re feeling adventurous. The whole bay sits pretty shallow, topping out at around 7 metres. We often find ourselves just floating above the kelp and rocky reef, watching the triplefins dart around. The visibility averages about six metres, which, for a sheltered bay, is decent enough to really focus on the smaller stuff. We’ve had great luck spotting blackfoot pāua clinging to the rocks and green rock lobsters tucked into crevices. Keep an eye out for stingrays gliding over the sandy patches; they're pretty common here. It’s perfect for a long, slow dive, especially if you’re into macro life or just getting comfortable again after a break.

    Today05:4418:3312h 48m daylightGolden hour 17:58

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    Conditions

    Ocean conditions, forecast and tides for Mathesons Bay

    Mathesons Bay Ocean Conditions

    Monthly averages for Mathesons Bay, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-35.84, 174.61) (14km away)

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    October Averages

    Sea Temperature

    16°C

    60°F · Range: 14.8–17.1°C

    Current Speed

    11.4 cm/s

    Direction: SE (142.1°)

    Chlorophyll-a

    0.388 mg/m³

    Moderate productivity

    Salinity

    35.44 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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