Langstone Harbour - Sinah Lake Rainfall ForecastUnited KingdomSEHampshireLangstone Harbour - Sinah LakeToday 18 MayNo RainMon 19 MayNo RainTue 20 May5%Wed 21 May20%Thu 22 May10%Fri 23 May10%Sat 24 May45%Langstone Harbour - Sinah Lake rainfall forecast issued today at 1:38 pm. Next forecast at approx. 3:38 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