Please use tidal harmonic predictions with a sensible margin of safety. The effect of air pressure on tidal height can be substantial. Tide tables assume a standard pressure of 1013 hectoPascal (hPa). One hPa, or millibar, variation from that will change the sea level by one centimetre. Mean sea levels may also be raised or lowered by strong winds depending upon the topographical features of the area.
Tidal Hour:
(Manual calculation) (Dover)
Small tidal stream inaccuracies can develop when advancing beyond HW Dover +6. Because of this we only enable today's tidal stream chartlets to advance 24 hours.
Future tidal planning is best accomplished by using Portnocker's future tides predictor below.
The above image represents the current tidal streams offshore of this haven. Streams attaining three knots and above are highlighted by red arrows . All times are in local time with red text indicating springs, blue indicating neaps and gray between tidal events. Click [+] to advance the estimate by an hour and click [-] to step back.
Future tidal planning is best accomplished by using Portnocker's future tides predictor below.
Arrows represent the direction of tidal streams with lighter or shorter arrows indicating weaker streams. Stronger streams are indicated by heavier or longer arrows, and as mentioned above, red arrows flagging rates of 3 knots and above. Numerals represent [mean neap, mean spring] rates in tenths of a knot. For example the numbers 12,23 would indicate a mean neap of 1.2 knots and a mean spring of 2.3 knots.
More local tidal details
Today's Portrush tides — High waters: 02:27, 14:18, Low waters: 07:50, 21:18
Today's Dover tides — High waters: 05:05, 17:57, Low waters: 12:11, 01:00
We are now
on Neaps.
High Water Moville +0350 Dover MHWS 2.3m MHWN 1.8m MLWN 0.8m MLWS 0.3m
Direction of stream Offshore of Lough Foyle Dover -0530 East going, +0030 West going; spring rate of 2 knots In the Entrance Dover -0320 Ebb (one hour less at Magilligan Point); spring rate of 3.5 knots.
This tool can be used to estimate future costal tidal streams for this area. All that is required are two simple steps:
Step 1: What is the Dover High Water for the target date?
Use a current Dover Tide Table to find Dover High Water for the target date. The National Oceanography Centre offers online tidal predictions for up to 28 days from today. Click here to open their tide table for Dover
Step 2: Input the target date's Dover High Water
Hour:
Minute:
Taking a mean tidal offset from Dover's tide, we expect your targetted date's associated local tide at to be:
High waters: Low waters:
Data based on an average tide is only accurate to within one hour, if you more precise times are required use the ISA tidal predictions, with Portrush offset -01:00.
Tidal Hour:
()
For planning purposes only, not for navigation. Please see our terms and conditions.
The above wind speeds are expressed in the Beaufort scale. Red indicates strong winds of 6 or higher.
Click [+] to advance by twelve hours and click [-] to step back. The forecasted time is presented in the top left hand corner of the pressure chart. Click the image to display it in a full window.
Contains public sector information licensed under the Open Government Licence
Belfast Maritime Rescue Co-ordination Centre (MRCC). Operational Area: Northern Ireland/ Irish Republic Border, Lough Foyle to Northern/Irish Republic Border Carlingford Lough. Belfast Coastguard (MRSC) VHF Ch 16, liaises closely with IRCG. Emergencies are worked on 16, 67 and working channel. Alternatively, or if ashore, phone 999 and 112 (free) and ask for ‘Marine Rescue’. Police, Fire and Rescue are also available on this number. Belfast (MRSC) may be contacted directly on +44 2891 463 933. The Irish Coast Guard has a coastal unit at Greencastle.
Other useful contacts in this area: Harbour Master: VHF Ch 16 and 14 Call sign [Harbour Radio] P: +44 28 71 861113 M: +44 780 1032387 Greencastle Harbour Master M: +353 872 50 2231 Berthing advice within the Greencastle Harbour Frank McDermott M: + 353 86 816 6151
British Admiralty 2798 ‘Lough Foyle to Sanda Island including Rathlin Island’ scale of 200,000:1 and 2723 ‘Western Approaches to the North Channel’ scale of 200,000:1 large scale. Closer in Admiralty 2811 ‘Sheep Haven to Lough Foyle including Inishtrahull’ scale of 75,000 and 2499 ‘Approaches to Londonderry and Coleraine’ scale 40,000:1, and 2511 ‘Approaches to Lough Foyle’ scale of 25,000:1 plus 2510 ‘Approaches to Londonderry’ scale of 25,000:1. Admiralty Leisure Folio SC5612 Northern Ireland, 'Carlingford Lough to Lough Foyle' sheets 12, 22 and 23. Imray chart C64 ‘Belfast Lough to Crinan and Islay’ plus Northern Ireland Ordinance Survey No. 3 and 4 at a scale of 1:50,000 for inland details.
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Please note eOceanic makes no guarantee of the validity of this information. Whilst every effort has been made to use valid source data and ensure calculations are correct, no warranty is made. All tidal predictions are approximations and differences used to calculate times and heights at secondary ports are based on stated averages that reduce precision. This information is provided as a guide only and is not to be used for navigation. For navigation please refer to published tidal tables. Actual height and time of tides are affected by barometric pressure and other weather effects. Any data provided on this page is entirely used at your own risk and you must read our legal page if you view data on this site.
. All times are in local time with red text indicating springs, blue indicating neaps and gray between tidal events. Click [+] to advance the estimate by an hour and click [-] to step back.
Future tidal planning is best accomplished by using Portnocker's future tides predictor below.
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