Southampton Water - River Itchen Entrance Rainfall ForecastUnited KingdomSEHampshireSouthampton Water - River Itchen EntranceToday 21 Feb90%Sun 22 Feb90%Mon 23 Feb15%Tue 24 Feb5%Wed 25 Feb15%Thu 26 Feb50%Fri 27 Feb50%Southampton Water - River Itchen Entrance rainfall forecast issued today at 12:38 pm. Next forecast at approx. 2:38 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads