Dolphin (Including Royal Dolphin) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 14 January 1971. House.

Dolphin (Including Royal Dolphin)

WRENN ID
gaunt-mantel-heron
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
14 January 1971
Type
House
Address
Dolphin (Including Royal Dolphin), Portmeirion, Penrhyndeudraeth
OS grid reference
SH 589 371
Coordinates
52.91311, -4.09879
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Dolphin, which includes the Royal Dolphin, is a large three-storey building set on an arched rubble plinth that rises from the natural rock. It features rendered elevations and a hipped roof covered with pantiles, complete with sprocket eaves. The front elevation has an arched entrance at ground level that provides access to the Royal Dolphin, which occupies this floor. To the left, there is a small 8-pane, two-part casement window, and to the right, a similar 12-pane casement window. The upper floors also have 12-pane casement windows, each fitted with external wooden boarded shutters. On the first floor to the left, there is an arched light adorned with a decorative wrought-iron grille, with a narrow small-pane window positioned above it.

The rear elevation, which faces the estuary, features two multi-pane French doors on the ground floor (Royal Dolphin) that open onto a railed terrace, along with a 12-pane casement window to the right. The upper floors have similar windows to the right and recessed triangular balconies in the center, which are equipped with plain railings at the front and small-pane glazed doors. Each balcony is flanked by tall 12-pane windows on both floors.

Local climate

Dolphin (Including Royal Dolphin) sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Detailed attributes — period, style, materials, features
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