Forecast keeps mentioning mirk on south & west facing coasts in
Cornwall.

Well on the tip of Cornwall www.sennen-cove.com/lbtdy.htm

There is some cloud on the upslopes of the hills though. Culdrose is
catching it, but at sea level it's lovely. I notice it's nice on
Scilly as well.

Max of 16.4C in Penzance

Graham
Penzance