Dinas Boat Yard · Beach Road · Y Felinheli · Gwynedd · LL56 4RX

Menai Strait Passage Planner

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Slipway

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Caernarfon · Next HW

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Menai Bridge · Next HW

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Swellies Transit

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Wind · Y Felinheli

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Tidal Predictions · Bangor University CAMS · Times shown in BST

▸ SW End — Caernarfon

Chart Datum · ODN +2.72m · Caernarfon Bar & slipway reference

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▸ NE End — Menai Bridge

Chart Datum · ODN +3.78m · Swellies & Beaumaris reference

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Caernarfon SW

Menai Bridge NE

Green bands = slipway open · Amber line = now · Phase difference shows opposing tidal streams

Wind Forecast · Open-Meteo ECMWF · Y Felinheli 53.19°N 4.21°W

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Live Wind Map · Windy.com · Menai Strait

Passage Windows · Next 5 Days · Based on CAMS Predictions

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FOR REFERENCE ONLY. Tidal data: Bangor University CAMS (cams.bangor.ac.uk) — authoritative Menai Strait specific predictions. Wind: Open-Meteo ECMWF free forecast. This tool does not constitute navigational advice. Always verify against current official UKHO tide tables and Met Office forecasts. Exercise sound seamanship at all times. Swellies: target Liverpool HW −2h30m (NE/eastbound) or HW +1h (SW/westbound). Streams reach 8kn springs. Caernarfon Bar: follow leading marks; consult Caernarfon Harbour Authority (01286 672118) before transit. Tidal times shown in BST. Tide data updated annually each January from Bangor University CAMS. Dinas Boat Yard accepts no liability.