Langstone Harbour - Sinah Lake Rainfall ForecastUnited KingdomSEHampshireLangstone Harbour - Sinah LakeToday 4 MarNo RainThu 5 Mar15%Fri 6 Mar40%Sat 7 Mar15%Sun 8 Mar15%Mon 9 Mar15%Tue 10 Mar10%Langstone Harbour - Sinah Lake rainfall forecast issued today at 12:35 pm. Next forecast at approx. 2:35 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