Overview

• The UK is experiencing an unseasonably warm spell, with Thursday expected to be the warmest day of 2025 so far, reaching up to 21°C in some areas.
• Wednesday saw temperatures climb to 18.7°C in Northolt, west London, following a cold snap earlier in the week with lows of -8.3°C in Braemar, Aberdeenshire.
• The warm weather coincides with the spring equinox, marking the first day of astronomical spring, though it is unlikely to break the 1972 equinox record of 21.5°C.
• Parts of the UK could be warmer than Barcelona and Athens on Thursday, where temperatures are forecast at 15°C and 12°C, respectively.
• The warm spell is expected to end on Friday, with rain and cooler temperatures forecast for the weekend as unsettled weather moves in.