UK National Tide Gauge Network | National Tidal and Sea Level Facility National Tidal and Sea Level Facility Tides Storm surges Products About About tides Tides – questions and answers Sea level – questions and answers The Doodson-Légé Tide Predicting Machine Tide clocks and watches Tidal river bores The River Dee / Afon Dyfrdwy The River Mersey UK National Tide Gauge Network Data availability Tidal predictions – UK and Ireland UK South Atlantic Network Gibraltar sea level station Tidal predictions – South Atlantic Tide gauge instruments Definitions of tidal levels Chart datum and ordnance datum Permanent Service for Mean Sea Level (PSMSL) (external link) Engineers’ page Proudman Building, Liverpool weather station About storm surges Tide-surge model Surge model forecast Surge model archive Surge model archive: 2004–2019 Surge model ensemble forecasting Skew surges Skew surge history: England – south Skew surge history: England – east Skew surge history: England – west Skew surge history: Wales Skew surge history: Scotland Skew surge history: Northern Ireland Skew surge history: Isle of Man Skew surge history: Channel Islands Sea level trends Sea level trend charts Software UK National Tide Gauge Network The UK national network of sea level gauges was established after violent storms in the North Sea in 1953 resulted in serious flooding. The network provides high quality sea level information to provide warning of possible flooding of coastal locations around the British Isles. The UK National Tide Gauge Network records tidal elevations at 42 locations around the UK coast. These data are also required for research into coastal processes, storm surge behaviour and sea level rise. The network is owned and operated by the Environment Agency. For enquiries, please contact the Environment Agency’s customer services department Find out about types of instruments, tide gauges and systems Real-time/near real-time data display Use the links below to view the latest measurements from gauges in the UK Tide Gauge Network RT real-time/near real-time data from each tide gauge ST site information for each tide gauge location XL highest recorded levels for the history of the tide gauge location, up to 2012 During 2016–2025 maintenance was contracted to third parties. Since 2025 NOC has been tasked with the tide gauge maintenance, and site information updates (discontinued in 2016) will be available in due course. England – south Avonmouth RT | ST XL Avonmouth (Portbury) RT Bournemouth RT ST XL Dover RT ST XL Hinkley Point RT ST XL Ilfracombe RT ST XL Newhaven RT ST XL Newlyn RT ST XL Plymouth (Devonport) RT ST XL Portsmouth RT ST XL St. Mary’s RT ST XL Weymouth RT ST XL England – east Cromer RT ST XL Felixstowe RT | ST XL Harwich RT ST XL Immingham RT ST XL Lowestoft RT ST XL North Shields RT ST XL Sheerness RT ST XL Whitby RT ST XL England – west Heysham RT ST XL Liverpool RT ST XL Workington RT ST XL Wales Barmouth RT ST XL Fishguard RT ST XL Holyhead RT ST XL Llandudno RT ST XL Milford Haven RT ST XL Mumbles RT ST XL Newport RT ST XL Scotland Aberdeen RT ST XL Kinlochbervie RT ST XL Leith RT ST XL Lerwick RT ST XL Millport RT ST XL Moray Firth RT | ST XL Port Ellen RT | ST XL Portpatrick RT ST XL Stornoway RT ST XL Tobermory RT ST XL Ullapool RT ST XL Wick RT ST XL Northern Ireland Bangor RT ST XL Portrush RT ST XL Isle of Man Port Erin RT ST XL Channel Islands St. Helier RT ST XL 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. Chart datum to ordnance datum differences are provided for selected ports.