This weekend is set to be the warmest of the year so far, with temperatures expected to reach 23 degrees in parts of East Anglia.
The Jesus Green Lido in Cambridge only opened last week for the start of the season, and now they're having to get in extra staff to cope with the expected rush.
In Cambridge, punting businesses are expecting to be busy too.
On the Norfolk coast at Great Yarmouth, businesses are stocking up, ready for the warm weather.
Click below to watch a report by ITV News Anglia's Emily Knight.