Greaves Wharf and Oakleys Wharf is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. Factory.

Greaves Wharf and Oakleys Wharf

WRENN ID
eternal-kitchen-dew
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
1 April 1974
Type
Factory
Address
Greaves Wharf and Oakleys Wharf, Porthmadog
OS grid reference
SH 569 383
Coordinates
52.92372, -4.12959
Source
Cadw listing

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

Description

Greaves Wharf and Oakleys Wharf is a 180-meter long structure oriented northeast-southwest. It features battered walls made of large blocks of dressed stone arranged in regular courses. The wharf includes later additions such as steel ladders and iron mooring rings. Steel railings are set back from the edge of the wharf, except near the harbour-master's office, which marks the boundary between Greaves and Oakleys Wharves. At the southwest end, there is a return wall that faces a wide slipway known as 'The Beach,' which has a later stone parapet. The northeast end of the wharf meets Britannia Bridge.

Local climate

Greaves Wharf and Oakleys Wharf 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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