Sydenham Rainfall ForecastUnited KingdomNIBelfastSydenhamToday 19 Sep75%Sun 20 Sep55%Mon 21 Sep15%Tue 22 Sep80%Wed 23 Sep30%Thu 24 Sep20%Fri 25 Sep15%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Sydenham rainfall forecast issued today at 7:10 am. Next forecast at approx. 9:10 pm. Rainfall Rainfall AccumulationCastor Bay (Lurgan) RadarGet WillyWeather+ to remove ads