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.
Address
Middle Mouse (Ynys Badr), off the north coast of Anglesey, Wales
53.45, -4.4
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
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