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.

Main image

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.
Middle Mouse
Middle Mouse (Ynys Badr), off the north coast of Anglesey, Wales
53.4500, -4.4000

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
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-2°
Coldest Month
Monthly Conditions

January

Weather

0.0
UV Index
Low
7.9h daylight

February

Weather

0.1
UV Index
Low
9.6h daylight

March

Weather

0.4
UV Index
Low
11.7h daylight

April

Weather

0.8
UV Index
Moderate
13.8h daylight

May

Weather

1.2
UV Index
High
15.7h daylight

June

Weather

1.4
UV Index
High
16.7h daylight

July

Weather

1.3
UV Index
High
16.2h daylight

August

Weather

1.0
UV Index
High
14.6h daylight

September

Weather

0.6
UV Index
Moderate
12.5h daylight

October

Weather

0.3
UV Index
Low
10.4h daylight

November

Weather

0.1
UV Index
Low
8.4h daylight

December

Weather

0.0
UV Index
Low
7.3h daylight

Nearby Attractions to Middle Mouse