On Friday, April 19, 2019 at 4:40:31 PM UTC+1, Graham Easterling wrote:
SNIP
After being a light onshore the wind has backed a little and has allowed the temperature to rise to 20.1C, may rise a bit further.

It did, with the wind backing offshore around 15:45 (under the influence of an afternoon north coast sea breeze) a late maximum of 20.5C @ 16:30.

Graham
Penzance

Max 23.1C here.
No sea breeze.

Len
Wembury