Tidal predictions for ports in the UK and Ireland | National Tidal and Sea Level Facility

Tidal predictions for the next 28 days are available for ports in the UK and Ireland. Predictions spanning one year for British overseas and independent territories, the South Atlantic, and Gibraltar are also available.

Tidal predictions

Use the links below to view predictions at selected locations

HL – high and low water predictions for the next 28 days
RT – high/low waters are not well defined – use predictions shown on real-time plots
XT – highest and lowest predicted tides from 2008 to 2026

England – south
Avonmouth: HL | XT
Bournemouth: RT | XT
Dover: HL | XT
Hinkley Point: HL | XT
Ilfracombe: HL | XT
Newhaven: HL | XT
Newlyn: HL | XT
Plymouth (Devonport): HL | XT
Portsmouth: HL | XT
St. Mary’s: HL | XT
Southampton: HL
Weymouth: HL | XT

England – east
Cromer: HL | XT
Felixstowe: HL | XT
Harwich: HL | XT
Immingham: HL | XT
Lowestoft: HL | XT
North Shields: HL | XT
Sheerness: HL | XT
Whitby: HL | XT

England – west
Blackpool: HL
Formby: HL
Heysham: HL | XT
Hilbre Island: HL
Liverpool: HL | XT
Southport: HL
Workington: HL | XT

Wales
Barmouth: HL | XT
Fishguard: HL | XT
Holyhead: HL | XT
Llandudno: HL | XT
Milford Haven: HL | XT
Mumbles: HL | XT
Newport: HL | XT

Scotland
Aberdeen: HL | XT
Kinlochbervie: HL | XT
Leith: HL | XT
Lerwick: HL | XT
Millport: HL | XT
Moray Firth: HL | XT
Port Ellen: RT | XT
Portpatrick: HL | XT
Stornoway: HL | XT
Tobermory: HL | XT
Ullapool: HL | XT
Wick: HL | XT

Northern Ireland
Bangor: HL | XT
Donaghadee: HL
Derry / Londonderry: HL
Portrush: HL | XT

Ireland
Cobh: HL
Dublin: HL
Limerick: HL
Rosslare: HL
Sligo: HL

Isle of Man
Port Erin: HL | XT

Channel Islands
St. Helier: HL | XT

Notes:
Port Ellen tide gauge decomissioned December 2018.
Moray Firth tide gauge decomissioned August 2017.
Harwich tide gauge superseded Felixstowe January 2016.
Portbury (south of River Avon) replaced Avonmouth in 2011.

Ports in Ireland and non-network locations are not marked on the above map

Chart datum to ordnance datum differences are provided for selected ports.

UK Highest and lowest tidal predictions for twenty years from 2008

Highest and lowest tidal predictions (XT) between 2008–2026 are provided for locations in the UK Tide Gauge Network.

Predictions include:

highest and lowest tidal elevations during this period
highest and lowest tidal elevations for each year
ten highest and lowest tidal elevations during this period
mean high water springs and mean low water springs
mean high water neaps and mean low water neaps