Middle Mouse Island

Small rocky islet off Anglesey, notable seabird habitat

A tiny islet off Anglesey, Middle Mouse draws boat trips and divers to its sea lanes and birdlife; local anglers and seabird observers note its rocky shores and shoals.

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Middle Mouse at a Glance#

Address: Middle Mouse (Ynys Badr), off the north coast of Anglesey, Wales

About Middle Mouse#

Middle Mouse is a small rocky islet off the north coast of Anglesey in Wales. It is uninhabited, noted for seabird colonies and coastal diving around its rocky shores, and lies a short distance offshore from the Anglesey coastline.

  • Access: The islet is uninhabited and best visited by boat; local skippers and dive operators sometimes include it in wildlife and diving trips.

How to Get to Middle Mouse#

Accessible only by private boat or local tour operators from ports on Anglesey (e.g., Amlwch). Check with local skippers on landing permissions and tide safety.

Tips for Visiting Middle Mouse#

  • Bring stout footwear if landing by kayak - the rocks are sharp and the currents swift.
  • Middle Mouse is best visited with a local skipper who knows the tides and submerged ledges.
  • Binoculars are useful - the islet is a haul-out point for grey seals and a hunting patch for seabirds.

Best Time to Visit Middle Mouse#

Visit in late spring or summer for gentler seas and the best chance to land; always check local weather and tide forecasts.

Late Spring-Summer
May-Aug · 8-18°C
Calmer seas and better conditions for small-boat landings and wildlife watching.

Weather & Climate near Middle Mouse#

Climate
Air Quality: AQI 28 Good
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-2°
Coldest Month