It is yet another hot, sunny day in Cambridge and the cool blue waters of Jesus Green lido have never looked more inviting. Zelna Weich, a 23-year-old PhD student, has just taken her first dip in the water.
“I thought it was going to be much colder than it was. It’s the perfect temperature,” she says, smiling. She is already planning to come back on Monday. “It’s supposed to be, like, 39 degrees.”