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 Portavogie Harbour'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 Portavogie Harbour'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 Portavogie tides — High water: , Low water:
Today's Dover tides — High waters: 12:36, 01:00, Low waters: 07:49, 20:16
We are now
on Springs.
HW Dover +0016 or Belfast +0005. MHWS 4.7m MHWN 3.9m MLWN 1.4m MLWS 0.6m Tidal range: Springs 4.7-0.6; Neaps 3.9 -1.4 metres.
North Channel offshore streams about 1.5 knots at Springs. The north-going stream begins at Dover +0015 The south-going stream begins at Dover +0630
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 Portavogie 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.
Headline: Early fog soon clearing leaving a warm and sunny day.
Today: Another warm and sunny day after any patches of overnight fog lift and clear through the morning. Light winds and feeling warm in the September sunshine. Maximum Temperature 22C.
Tonight: A clear and dry start to the evening but some low cloud and fog forming, especially in the east during the night, a few spots of drizzle possible too. Minimum Temperature 10C.
Friday: Early mist and fog clearing leaving a dry and sunny day again, perhaps less warm than recently and the possibility of coastal cloud in the east. Maximum Temperature 19C.
Outlook for Saturday to Monday: Some bright weather on Saturday, a few heavier overnight showers possible. Cloudy on Sunday, perhaps brighter in the north. Winds turning northerly on Monday with some showers.
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 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
Other useful contacts in this area: Portavogie Harbour Master Radio Watch VHF Channel 14 also 12 & 16. T: +44 28 4277 1470 M: +44 77 1207 4609
British Admiralty 2156 ‘Strangford Lough’, the scale of 37,500:1 that includes ‘Portavogie’, at a scale of 5000:1. Admiralty Leisure Folio SC5612 'Northern Ireland, Carlingford Lough to Lough Foyle' SC5612.9 A & B provides excellent detail. Also Imray chart C69 – ‘Irish Sea’ and OS Irish Maps Discovery Series 'Strangford Lough' provides land detail at a scale of 1:50 000.
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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 
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