In reply to kingholmesy:
Swanage should be ok, the rain slid to the north until mid afternoon so not a huge amount of rain. Given a bit of sun and the wind forecast for tomorrow things should be dry pretty quickly. We have had a very dry summer here so there will be no seepage.
In reply to kingholmesy: I've sat in the national trust cafe in a torrential downpour after driving up from London hoping the legendary micro-climate would prevail, and been climbing an hour after it stopped.