About one minute of very light rain at 1325Z from cloud (8 okta) at about 10,000 ft. Temperature 28°C. (max later 29°C). Local METARs (Biggin Hill, Kenley, Gatwick) give CAVOK as they should but that doesn't quite tell you everything, does it?
Tudor Hughes, Warlingham, NE Surrey, 557 ft, 170 m