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 36 swim dates in our solo swims database during 2017: Jun 12th, Jun 14th, Jun 17th, Jun 26th, Jun 30th, Jul 2nd, Jul 4th, Jul 7th, Jul 8th, Jul 13th, Jul 14th, Jul 16th, Jul 25th, Aug 1st, Aug 5th, Aug 7th, Aug 8th, Aug 13th, Aug 14th, Aug 16th, Aug 21st, Aug 22nd, Aug 25th, Aug 26th, Aug 27th, Aug 28th, Aug 29th, Sep 1st, Sep 2nd, Sep 15th, Sep 16th, Sep 17th, Sep 19th, Sep 22nd, Sep 26th, Sep 27th.


  • 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.