Trefor Surf and Wind Quality by Season (Wales – Lleyn, UK)

The charts below show frequency of occurrence of a certain swell or wind in Trefor, broken down by both direction and strength (wave height).

IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.

Seasonal Trefor Swell and Wind Distribution

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This chart illustrates how frequently and how strongly the wind blows from different di... (show all text)

The figure shows the variation of swells directed at Trefor over a normal northern hemi... (show all text)

The graph shows how commonly and how strongly the wind blows from different directions ... (show all text)

This image describes the range of swells directed at Trefor through an average northern... (show all text)

The rose diagram describes how often and how strongly the wind blows from different dir... (show all text)

The graph illustrates the combination of swells directed at Trefor over a normal northe... (show all text)

This picture shows how often and how strongly the wind blows from different directions ... (show all text)

The rose diagram describes the combination of swells directed at Trefor through an aver... (show all text)

You can also compare this with Trefor swell conditioned on favourable winds.

Also see overall Trefor surf quality charts (on the guide page) and Trefor surf quality by month.