River Thames - HMS Belfast Rainfall ForecastUnited KingdomSEGreater LondonRiver Thames - HMS BelfastToday 3 Jul5%Fri 4 Jul10%Sat 5 Jul20%Sun 6 Jul20%Mon 7 Jul35%Tue 8 Jul5%River Thames - HMS Belfast rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Chenies (Hertfordshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads