DivePlnr
    Portnablagh dive site
    reef
    5-20m
    West Coast, Ireland
    Horn Head and Rinclevan SAC

    Portnablagh

    Best months: Jul–Aug

    Protected Area

    Horn Head and Rinclevan SAC

    Why dive here

    With 169+ marine species recorded in the area - including dolphins, dwarf minke whales, humpback whales, ocean sunfish (mola mola) and octopuses - Portnablagh offers some of West Coast's richest reef diving. Water ranges 8-17°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 5mm wetsuit
    Marine lifeDolphins, Dwarf Minke Whales, Humpback Whales, Ocean Sunfish (Mola Mola) and Octopuses · 169+ species recorded
    Water8-17°C · warmest July, August, September
    CharacterReef dive · max 5-20m
    StandoutExceptional marine biodiversity

    Portnablagh, on Ireland's West Coast, generally offers a relaxed shore dive. You’ll find a mix of rocky reefs and sand patches, with various crab species and small fish often visible among the kelp. It’s a good spot for newer divers or those looking for an easy entry with local marine life. Surface conditions can get choppy, so we'd suggest picking a calmer day.

    Typical Portnablagh Dive Profile

    5mSafety Stop0m5m max~60 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

    Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today05:5416:4510h 51m daylightGolden hour 15:55

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    Conditions

    Ocean conditions, forecast and tides for Portnablagh

    Portnablagh Ocean Conditions

    Monthly averages for Portnablagh, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (53.32, -9.66) (22km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    56°F · Range: 11.7–15.4°C

    Air Temperature

    12°C

    54°F

    Wind Speed

    8.2 m/s

    15.9 knots

    Atmospheric Pressure

    1007.4 hPa

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

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