Puffin Island (Anglesey)

Island Small Anglesey island known for seabird colonies.

Off Anglesey’s east coast, Puffin Island supports seabird colonies, rocky shores and seal haul-outs. Boat trips from Beaumaris and nearby villages bring wildlife watchers and photographers hoping to see puffins and guillemots.

Main image

A small island off the eastern tip of Anglesey in Wales, known in Welsh as Ynys Seiriol. It lies close to the mainland near the Penmon headland.

The island is notable as a seabird locality and is associated with breeding seabirds including puffins and other coastal species. It is often viewed from the shoreline at Penmon or by short local boat trips rather than visited on foot.

The island has long been noted in local maritime and ecclesiastical tradition and appears in regional maps and accounts. Its human use has been limited and primarily seasonal or nautical.

Located a short distance offshore from the village and headland of Penmon on the eastern side of Anglesey in north-west Wales.

  • Welsh name: Local Welsh name is widely used and appears on many maps and guides.
Puffin Island (Anglesey)
Puffin Island (Ynys Seiriol), off Penmon/Beaumaris, Isle of Anglesey, Wales, UK
53.3189, -4.0259
No public access to interior; boat tours operate seasonally (spring-autumn)
Boat trips from Beaumaris typically £15-£25 per person (operators vary); island access regulated by Natural Resources Wales/RSPB

How to Get to Puffin Island (Anglesey) #

Boat trips to Puffin Island depart from Beaumaris and nearby harbours on Anglesey. Licensed wildlife-charter operators run seasonal trips (late spring through early autumn). Driving: Penmon and Beaumaris are reachable by road from the A55 across Anglesey.

Tips for Visiting Puffin Island (Anglesey) #

  • Book a wildlife cruise from Beaumaris in advance - boats run weather-dependent and have limited capacity.
  • Bring a coat even in summer; the sea and wind around Anglesey can be chilling.
  • Respect protected seals and birds: landing is restricted and supervised; use licensed operators.

Best Time to Visit Puffin Island (Anglesey) #

Puffin Island is best visited in late spring and summer when seabirds are breeding; access is by licensed boat only.

Breeding season
May-August · 10-20°C
Best for seabirds and puffins; tours run more frequently.
Shoulder season
April & September · 8-16°C
Fewer visitors and still good for seals and migrating birds; weather can be changeable.

Weather & Climate near Puffin Island (Anglesey) #

Climate
Temperature & Rainfall
Temperature Range
24°
Warmest Month
-3°
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 Puffin Island (Anglesey)