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Notice 21-10-2026. Over the coming 3 weeks we will be migrating to a newer version of Bigsalty. Whilst this happens we have removed login / user capabilities and some current weather functionality.

Siblyback Windsurfing Guide

General info

Suitability
beginner, intermediate, advanced
Beach faces
SW
Best wind
N, S, NW, NNW, SSE
Tidal range
none
Shelving rate
slight

Siblyback lake is a watersports haven in the heart of Cornwall. For windsurfers it is a great place to learn but also for freeride and freestyle.

Almost all wind directions are sailable but specifically NW-N and SSE-S are the best for stronger winds and a more exciting session. In these directions the wind funnels through the valley and is clean for an inland location.

In southerly direction it provides nice flat water.

A lunch fee of £8 is payable at the clubhouse if you are not a SWLT member. Overall it's a safe and friendly lake with a good watersports center.

Features

In NW-N it can often be a few knots stronger than the surrounding area. This effect is present year round but in summer this direction experiences an additional thermal boost.

Specifically look out for NW-N and SSE-S wind directions.

Considerations

Be aware of the wake park which unfortunately makes it impossible to windsurf here in a south-westerly.