Also on the site
- Spring and neap tides: the next dates for Ireland and why they come every fortnight.
- How we check: where the predictions come from and how they compare with Dublin Port’s own tables.
Guides
Tide guides for the Irish coast
The tide tables tell you when. These guides tell you what it means for a swim, a walk on the strand, a crossing to a tidal island or an evening with a rod. Each one is checked against Marine Institute, Water Safety Ireland, RNLI or Inland Fisheries Ireland pages, listed at the bottom.
How to Read a Tide Table in Ireland
High water, low water, heights, range and the rule of twelfths, with a worked Dublin example. What the numbers mean and how to plan a day around them.
Updated 25 October 2026
Chart Datum vs OD Malin: Why Tide Heights Differ
Why one table says 3.8 m and another 1.4 m for the same tide. Ordnance Datum Malin, chart datum and LAT explained, with the offset for major Irish ports.
Updated 25 October 2026
Sea Swimming and Tides: When to Swim Safely in Ireland
Which state of tide suits a swim at a beach, a pier or a bathing place, how rip currents form, cold water shock, and Water Safety Ireland advice.
Updated 25 October 2026
Tidal Walks and Getting Cut Off by the Tide
Omey, Coney Island and the big Irish strands: how fast the flood returns, how to time a crossing, and what to do if you are cut off.
Updated 25 October 2026
Shore Fishing and Tides in Ireland
Which part of the tide to fish from a beach, a rock mark or a pier, why springs and neaps matter, and the bass rules for Irish anglers.
Updated 25 October 2026
Why the Tide at Your Beach Differs From the Port
Why high water at Arklow is hours away from Dublin, why estuaries run late, and how wind and pressure move the real level away from the prediction.
Updated 25 October 2026