The city and surrounding areas have been bombarded with heavy rainfall and strong winds which has resulted in damage across Hampshire.
The Met Office has weather warnings in place until the end of the day (November 2) and it is predicted that heavy rain and forceful winds will continue.
Here are 30 pictures of the flooding and damage caused by Storm Ciaran:
1. Storm Ciaran - Portsmouth cricket ground
Portsmouth cricket ground at St Helen's on Southsea seafront after Storm Ciaran hit. Picture Rick Marston Photo: Rick Marston
2. Storm Ciaran
Storm Ciaran hits Hayling Island on Thursday 2nd November 2023 Pictured: Hayling Island hit by Storm Ciaran
Picture: Habibur Rahman Photo: Habibur Rahman
3. A person sitting on a submerged bench at Canoe Lake, Southsea
A person sitting on a bench at Canoe Lake, Southsea, Portsmouth as Storm Ciaran brings high winds and heavy rain along the south coast of England. Photo credit should read: Andrew Matthews/PA Wire Photo: Andrew Matthews
4. Storm Ciaran
Portsmouth has taken a battering over the past couple of days - here are some pictures. Picture credit: Habibur Rahman Photo: Habibur Rahman