Temperatures across the UK ended up being a degree or so above the long term average for May. It was warmer across southern areas, but cooler the further north you where, and anomalies were negative across the Northern Isles. The high temperatures across the country have been as much to do with the record amount of sunny days rather than the temperature of the air mass, as a result nights have been cool and kept the mean temperature down. I do my best calculating anomalies with the limited amount of climate data that I can freely access – so take these values with a pinch of salt – hopefully they should be close enough for government work. I have added the anomalies for Europe too, which as you can see were surprisingly low across Scandinavia and eastern Europe.