Kent High Tides - Guide To High And Low Tides And Local Flooding Resources

Kent high tide information and resources are maintained on and linked from this page. The quality and quantity of the Yourcounty coverage is strongly connected to the preference of our users. If you have something you'd like to add to our high tide or flooding

Kent has a relatively varied coast with; cliffs, marshes, estuaries, sandy beaches and much more. Each of these particular environments in affected in a different way by tidal movements. High tides have a strong connection with the potential for flooding in Kent. An estimated 400,000 people in the county live in a coastal district, which makes the tides very important to Kent as a whole and the coastal communities in particular.

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As a general rule high tides affect; seagoing craft, activities in ports and harbours and even the enjoyment of holiday makers visiting the seaside. Particularly high tides can also have devastating effect on life and property when they lead to flooding. Kent enjoys the longest stretch of uninterrupted coastline in England, it is also one of the most diverse. In the North West we have the Thames Estuary with the saltwater/seawater habitat and much marshland. Thanet is in the North East and has a number of the county's most attractive sandy beaches. Now heading south towards Dover there are two large natural bays at Pegwell and Sandwich. Further on the shingle beaches of East Kent are now evident and the world famous cliffs serve as their backdrop.

We link to some of the most reliable tidal resources below. Kent Tidal predictions for twenty-eight days ahead are available as well as the UK National Tide Gauge Network locations. But what are high tides? Variations in sea levels caused by the joint effects of gravitational forces and the rotation of the earth. Most places adjacent to seas and oceans experience two high tides and two low tides each day (semi-diurnal tide), however some locations have only one high and one low tide each day (diurnal tide).

  • National Tidal and Sea Level Facility - Provide information on high tides for a range of locations in the region including Dover and Sheerness. The information that they make publicly available includes: High and low water predictions for the next 28 days. Predicted tides, highest and lowest tides to 2028 and the harmonic constants for each port. This is a nationwide service with almost all the major ports in the UK and Ireland included, other ports in the southern and Eastern regions include: Avonmouth, Bournemouth, Newhaven, Portsmouth, St. Mary's, Weymouth, Cromer, Harwich and Lowestoft. -
  • Flooding Risk - The Environment Agency Floodline provides several services including the estimated three day risk forecast for flooding,, The current and predicted river and sea levels. You can get access to a free floodline warning via: telephone, mobile, email, SMS txt message or fax. If you prefer sign up to the flood warning RSS feeds - x
  • Local Severe Weather Warnings -  The Met Office provide information information including severe weather warnings and links to more resources.


Flooding in Kent - if you're looking for strategic documents that deal with the issue you might like to see the Kent action plan for flooding. This document states:

Kent is vulnerable to six types of flooding:

  • River flooding that occurs when a watercourse cannot cope with the water draining into it from the surrounding land. This can happen, for example, when heavy rain falls on an already waterlogged catchment.
  • Coastal flooding that results from a combination of high tides and stormy conditions. If low atmospheric pressure coincides with a high tide, a tidal surge may happen which can cause serious flooding.
  • Surface water flooding that occurs when heavy rainfall overwhelms the drainage capacity of the local area. It is difficult to predict and pinpoint, much more so than river or coastal flooding.
  • Sewer flooding that occurs when sewers are overwhelmed by heavy rainfall or when they become blocked. The likelihood of flooding depends on the capacity of the local sewage system. Land and property can be flooded with water contaminated with raw sewage as a result. Rivers can also become polluted by sewer overflows.
  • Groundwater flooding that occurs when water levels in the ground rise above surface levels. It is most likely to occur in areas underlain by permeable rocks, called aquifers. These can be extensive, regional aquifers, such as chalk or sandstone, or may be more local sand or river gravels in valley bottoms underlain by less permeable rocks. This is not a significant source of flooding in Wales.
  • Reservoir flooding as some reservoirs hold large volumes of water above ground level, contained by walls, or 'dams'. Although the safety record for reservoirs is excellent, it is still possible that a dam could fail. This would result in a large volume of water being released very quickly.

An assessment of the risk of flooding Kent can be found in the Community Risk Register .

If you're looking for even more tidal information you can try the BBC tide tables.

Kent High Tides Feedback & Disclaimer

We welcome your input into our tidal information page. If you have would like to submit more resources for inclusion here or have other relevant feedback, you can contact us at This is a page under constant improvement. Please refer to our disclaimer, Yourcounty does not have any responsibility for the content of external websites.