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 Weymouth 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 Weymouth 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 Portland tides — High waters: 08:37, 20:53, Low waters: 01:07, 13:19
Today's Dover tides — High waters: 12:36, 01:00, Low waters: 07:49, 20:16
We are now
on Springs.
HW Dover approximately -0440 MHWS 2.1m MHWN 1.4m MLWN 0.8m MLWS 0.4m Mean Level 1.0 Double Low Waters occur between Portland and Lulworth Cove. Predictions are for the 1st Low Water with the 2nd Low Water occurring 3 - 4 hours later.
Tides in Weymouth are very small, by Channel standards, and tidal streams are so weak that they are barely perceptible. Owing to an eddy, there is a west-going stream in Weymouth Roads that is never more than a ½ knot save for between Dover -0515 to -0315. Tides flood for 4 hours, ebb for 4 hours and then there are 4 hours of slack around LW, except for a small rise of around 0.2 metres, known as the Guider, that commences about ¾ of an hour after Low Water. The rise and fall of the tides within the harbour may be considerably affected by winds.
Tides in the vicinity of the Bill of Portland are strong, and a dangerous Race exists south of the Bill. The peninsula disrupts the flow of water in the Channel and the streams are further disrupted by a ledge of Portland stone that extends further out to sea. Added to this are strong south-going streams either side of the Bill, running for 9 or 10 hrs of the tidal cycle, that meet the main Channel streams. All combine to cause the seas to well up and break with the effects of this conflagration being felt up to 5 miles south of Portland Bill.
The Race can be avoided by staying 3 to 5 miles offshore and allowing for a strong set into the race or onto the Shambles. Those planning on visiting Weymouth from the west can make use of an inshore passage which is much faster and shorter. Timing is vital to catch slack water and the right weather conditions in the inshore passage, but it should not be attempted during Springs or at night.
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 Portland offset -01:00.
Tidal Hour:
()
For planning purposes only, not for navigation. Please see our terms and conditions.
Sorry, our local future 'Tide Predictor' is currently not available for this location. Please find the BBC seven-day local tidal forecast below for your convenience. BBC tides are displayed in UTC (GMT). When the UK is observing British Summer Time (BST) you should add one hour to the times displayed by the BBC.
Feel free to use our calendar, below, to predict 'Future Tidal Streams' as normal. These are displayed in local time and need no adjustment.
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: Settled this evening, but turning more unsettled for the weekend.
This Evening and Tonight: A breezy evening on the south coast, with clear skies soon replaced with a blanket of cloud arriving from the east overnight. Patchy mist and fog may develop on the Moors, but staying dry and rather mild for most. Minimum Temperature 13C.
Friday: Cloudy at first, with sunny spells developing through the morning. Scattered showers arrive from the east by the afternoon, at times heavy and bringing a risk of thunderstorms. Feeling warm. Maximum Temperature 22C.
Outlook for Saturday to Monday: Unsettled this weekend and into next week, with heavy, possibly thundery, showers through Saturday and more persistent rain, heavy at times, through Sunday and Monday, Feeling warm and rather humid.
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
Coastguard should only be used for distress and urgency calls as follows:
• VHF Channel 16 call sign [Solent Coastguard]
• Alternatively, where a good phone signal exists, dial 999 and ask for the coastguard.
• If at sea, use the Global Maritime Distress and Safety System (GMDSS) to make a distress or urgency alert.
The National Maritime Operations Centre (NMOC) based at Fareham handles all operations in the area from Sussex, Hampshire, Isle of Wight, Dorset and Devon. They also assist other authorities such as the Police, Fire and Ambulance with their specialist expertise. The centre is manned 24x7 and has helicopters, based at rescue bases at Portland or Lee-On-Solent, at their disposal. Ch.67 can be used for routine communications and the National Maritime Operations Centre can be contacted directly on +44 23 8032 9486 for administrative enquiries only.
Phone 999 when it is a Police emergency, such as when a crime is in progress, someone suspected of a crime is nearby, when there is a danger to life or when violence is being used or threatened. Phone 101, the police non-emergency number, when it's less urgent than a 999 call.
Public Transport First P: +44 870 0106022 National Rail Enquiries P: +44 8457 484950 South West Coaches P: +44 1305 823039 Traveline P: +44 871 2002233
Royal Dorset Yacht Club P: +44 1305 786258 E: info@royal-dorset.com W: www.royal-dorset.com
Castle Cove Sailing Club P: +44 1305 783708 W: www.ccsc.org.uk
Admiralty Leisure Folio SC5601 ‘East Devon & Dorset Coast, Exmouth to Christchurch’, 2172 ‘Harbours and Anchorages on the South Coast of England’ 2610 ‘Bill Of Portland To Anvil Pt’, 2255 ‘Approach Portland & Weymouth’, 2268 ‘Portland Harbour’. Imray 2000 Series Chart Pack 2300 ‘Dorset and Devon Coast’. Imray C10, C12, C5, C4, 2300 NV Chart Atlas Pack UK2 ‘Start Point to the Needles’.
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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 Weymouth Harbour's future tides predictor below.
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