Channel Swimming & Piloting Federation "Nothing great is easy", Captain Matthew Webb

Sandettie Lightship Buoy Data

Daily values taken at 12 noon UTC.
Tidal range is the absolute difference between high and low Dover tides.

There were 39 swim dates in our solo swims database during 2019: Jun 22nd, Jun 24th, Jun 29th, Jul 1st, Jul 5th, Jul 6th, Jul 8th, Jul 9th, Jul 10th, Jul 12th, Jul 15th, Jul 16th, Jul 17th, Jul 23rd, Jul 25th, Jul 26th, Jul 29th, Aug 1st, Aug 2nd, Aug 3rd, Aug 4th, Aug 8th, Aug 12th, Aug 21st, Aug 22nd, Aug 23rd, Aug 24th, Aug 25th, Aug 26th, Aug 27th, Sep 1st, Sep 8th, Sep 9th, Sep 10th, Sep 15th, Sep 16th, Sep 19th, Oct 3rd, Oct 7th.


  • Data shown on these graphs are from the Sandettie Lightship Buoy automatic weather station. It is the closest station measuring sea temperatures and weather to the Channel swimming routes.
  • To track graph values move the mouse over the graph area. To change graph resolution, highlight the area of interest. To zoom out, double-click on the graph area.
  • Sandettie data is provided by the Met Office: it contains public sector information licensed under the Open Government Licence v1.0. Please read our detailed notes on Sandettie data and interpreting these graphs and values.
  • Tide range data is calculated by the XTide freeware. See our Tides section for more information. 
  • If you have any suggestions or comments on how we presented this data, please contact us.