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Porthmadog tide tables

Copyright Information

All Tidal Data is ©Crown Copyright. Reproduced by permission of the Controller of Her Majesty's Stationery Office and the UK Hydrographic Office ( No tidal data may be reproduced without the expressed permission of the UKHO licencing department.

PDFs and tables ©2014-2023 James Bithell


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PDF format tidal predictions for Porthmadog for the next 12 months are available via James Bithell's site, embedded below