51m
    South Coast, Ireland
    Clonakilty Bay SPA

    HMS MIGNONETTE

    Good diving all year

    Protected Area

    Clonakilty Bay SPA

    Why dive here

    With 185+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - HMS MIGNONETTE offers some of South Coast's richest wreck diving. Water ranges 9-15°C, warmest July, August, September.

    Best timeYear-round
    WetsuitA drysuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 185+ species recorded
    Water9-15°C · warmest July, August, September
    CharacterWreck dive · max 51m
    StandoutExceptional marine biodiversity

    The HMS Mignonette isn't just a hunk of metal on the seabed, it’s a tangible piece of history, resting at a respectable 51 metres. We love that it’s still so intact, a real time capsule from the First World War. Built in 1916, this Arabis-class sloop met its end just a year later from a mine, and it really shows you the brute force of that era’s naval warfare. Dropping down onto the Mignonette, you're immediately struck by its scale. Eighty-one metres long, it's a proper ship. The bow points proudly into the current, and you can still trace the lines of its four boilers and the massive triple-expansion engine. It’s an impressive sight, especially when the visibility is good, which it often is here on the South Coast. We usually find the best conditions mid-morning, before any afternoon chop really stirs things up. Exploring the Mignonette is like wandering through a sunken museum. The decks are largely gone, but the superstructure is still well-defined, offering plenty of nooks and crannies for curious divers. Look for the large propeller, often adorned with plumose anemones, their white tentacles gently swaying in the faint surge. Conger eels are often seen peeking out from behind plating, their heads like ancient gargoyles. Dogfish will sometimes make a casual pass, checking you out as you drift over the remains. It's a dive that rewards careful exploration, suited for experienced wreck divers comfortable with depth and perhaps a little chill.

    Typical HMS MIGNONETTE Dive Profile

    15m30m45mSafety Stop0m51m max~15 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

    Maximum depth 51m exceeds recreational limits (40m). Technical diving certification and equipment required.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

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

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today05:5316:5311h 0m daylightGolden hour 16:08

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    Conditions

    Ocean conditions, forecast and tides for HMS MIGNONETTE

    HMS MIGNONETTE Ocean Conditions

    Monthly averages for HMS MIGNONETTE, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (51.71, -8.38) (9km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    57°F · Range: 12.3–14.8°C

    Air Temperature

    12°C

    54°F

    Wind Speed

    7.84 m/s

    15.2 knots

    Atmospheric Pressure

    1008.6 hPa

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

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