According to the Met Office, Sunday November 1 has been recorded as the warmest November day in the UK.
Temperatures were warmer than Barcelona and the Algarve at 22.3°C (72.1°F) in Trawsgoed, Wales on Sunday. In 1946, Prestatyn, Wales recorded hotter temperatures in November as well, when the mercury reached 21.7°C (71.1°F).
Meteorologist Nicola Willis said an “unusually warm air mass” for this time of year settled over the UK and “southerly winds brought warm air in from the continent and the settled conditions resulted in sunshine to that part of Wales.”
Maximum average November temperatures have been recorded at 13°C in southern England, 10-12°C across the rest of England and Wales, and 10°C in Scotland.
Willis added: “I would not be surprised if we saw a repeat performance.” She said there was a 20 per cent chance the record could be broken on Monday November 2.
More than 50 flights have also been cancelled at Heathrow airport due to thick fog.