Britain was set to enjoy the warmest day of the year on Sunday, with temperatures hotter than in parts of Greece or Turkey, the Met Office said. Temperatures were forecast to hit 18 degrees Celsius (64 degrees Fahrenheit) in parts of England, making it "exceptionally mild" for early March, the national weather service said. The warm spell follows the wettest winter on record in England. "Across much of England and Wales, it will be a really nice day with plenty of sunshine," said Met Office meteorologist Calum MacColl. "In the area north of London and up towards Lincolnshire, we could see temperatures around 17 C (63 F) to 18 C (64 F), which would be the warmest day this year and exceptionally mild for the time of the year. "Areas such as inland Greece will be struggling to get into double figures today while coastal parts around the Black Sea will only reach temperatures that are in the late teens," he added. On average, UK temperatures in mid-March are only around 12 C (54 F).