Bit warmer today. Now 24C at Land's End airport, where people are stuck due to a bank of sea fog affecting Scilly.
Maximum (so far) in Penzance 24.2C, warmest day of the year.
Brief sharp shower 04:00, also distant lightning. Only 0.4mm of rain. Almost unbroken sunshine since dawn, just a little Ac castellanus.
Some spectacular lightning last night near Scilly. St Mary's looking NW across Samson

Graham
Penzance (SST now 16.5C at the Penzance buoy, nearer 20C over beaches where the breeze is onshore.)