Many people flocked to the beach to enjoy the sunshine or soaked up the sun at one of a number of events in and around the city, while others looked for shade.
For the rest of the week the temperatures remain a lot cooler, with highs of 22 degrees tomorrow before remaining at highs of 20 degrees for the rest of the week, followed by some rain next week.
Our photographers were out and about this weekend and captured these scenes:
17. Summer sunshine
Football fans Philip Bull, left, and Shane Howard with Philip's son, Daniel, 7, who was one of the mascots for Saturday's fixture at Gosport Borough FC. Picture: Chris Moorhouse (jpns 090923-17) Photo: Chris Moorhouse
18. Summer sunshine
Fans at Gosport Borough FC Picture: Chris Moorhouse (jpns 090923-22) Photo: Chris Moorhouse
19. Summer sunshine
Pictured is: Anthony, Sky, Carly and Daisy Read enjoy the day at the Thai Festival in Southsea Picture: Keith Woodland (090921-31) Photo: Keith Woodland
20. Summer sunshine
Pictured is: Joanne and Alan shelter from the sun in Southsea Picture: Keith Woodland (090921-13) Photo: Keith Woodland