Cardiff BSAC Tidal Curves

The Scuba diving Club for divers living in and around Cardiff

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Cardiff BSAC Tidal Curves



Tidal Ranges increase and decrease twice every 28 days, as the moon waxes and wanes.
  • Full Moon - Spring Tides
  • First Quarter - Neap Tides
  • New Moon - Spring Tides
  • Third Quarter - Neap Tides
The following tidal curves have been produced using tidal data for Cardiff, but 2019 & 2020 Spring and Neap tide dates will be consistent throughout the UK.

These graphs are provided as an aid to dive planning. It is the responsibility of the dive manager to obtain correct tide and weather information for any site you wish to dive.

When planning dives in strong tidal areas, it is advantageous to select dates with a small tidal range, more commonly called a Neap Tide. The reduced tidal flow around neap tides usually results in improved water visibility and increased "Slack Water" times. For the purpose of regularity across these graphs, certain dates in each month are repeated. Weekend dates are highlighted in yellow.

For further information about these graphs, or to find out how they can be used for any port or location in Western Europe, please check out our additional information page.
Tide Table for February 2019

Tide Table for March 2019

Tide Table for April 2019

Tide Table for May 2019

Tide Table for June 2019

Tide Table for July 2019

Tide Table for August 2019

Tide Table for September 2019

Tide Table for October 2019

Tide Table for November 2019

Tide Table for December 2019

Tide Table for January 2020

Tide Table for February 2020

Tide Table for March 2020

Tide Table for April 2020

Tide Table for May 2020

Tide Table for June 2020

Tide Table for July 2020

Tide Table for August 2020

Tide Table for September 2020

Tide Table for October 2020

Tide Table for November 2020

Tide Table for December 2020

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