Tides

The tides around this part of the world can be fierce and few passages are worth considering in a yacht if it is foul. South Stack, Carmel Head & the Skerries boast Spring tides in excess of 6 knots, Caernarfon Bar has a miniumum of 5 knots and the Swelles can reach 10 knots in exceptional conditions.

The only detailed Tidal Atlas is in "Cruising Anglesey & adjoining waters", from which the Atlas for the Menai Strait has been copied.

The Admiralty provides a few days of tidal predictions free of charge.
For the Holyhead tides CLICK HERE

Tidal constants for the region are included in the local pilot and are reproduced here in PDF format: CLICK HERE