Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 17:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition that rates each day for fish-bite likelihood using moon transits and rise/set. One to five stars, not a scientific forecast.

• Mon
  ★★★★★
• Tue
  ★★★★★
• Wed
  ★★★★★
• Thu
  ★★★★★
• Fri
  ★★★★★
• Sat
  ★★★★★
• Sun
  ★★★★★

Next spring tide on Wed 29 Apr (range 3.2m). Last neap on Mon 27 Apr. Next neap on Sat 02 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

Dublin sits at the mouth of the Liffey on Ireland's east coast, with Dublin Bay opening south toward Dún Laoghaire and Howth Head closing the bay to the north. The tide here runs the Irish Sea signature: cleanly semidiurnal, two highs and two lows about twelve and a half hours apart, with a moderately large height swing because the Irish Sea amphidromic system places Dublin reasonably close to the maximum-amplitude line. Mean range at the North Wall gauge on the Liffey mouth is about 3.4 metres, climbing past 4.3 on spring tides and dropping near 1.7 on neaps. The Liffey itself flows through the centre of the city and the tide reaches well past the Custom House on each flood, with the river current adding to the ebb. The long sand at Dollymount and Sandymount widens by tens of metres at low water, and the rocky shore at Howth Head and Dalkey Island swings through the full range. Bull Island in the bay is a UNESCO Biosphere Reserve and the intertidal flats there support the largest population of Brent geese in Ireland — birds that follow the tide cycle to feed. Walkers reading the South Bull beach at low water, kayakers crossing Dublin Bay to Howth or out to Dalkey Sound, and surfers at the Bull Wall right-hand beach break each read the table for different windows. Atlantic storm surge from winter low-pressure systems can lift levels 30 cm or more above predicted. Open-Meteo Marine drives the gridded predictions on this page; the UK Hydrographic Office Admiralty TotalTide and the Marine Institute of Ireland publish authoritative predictions for the east coast.