Harrow on the Hill Wind ForecastUnited KingdomSEGreater LondonHarrow on the Hill1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Harrow on the Hill wind forecast issued today at 7:13 pm. Next forecast at approx. 7:13 am.Harrow on the Hill Wind Statistics April WindNortholt (5km)2026MarchAprilStrongest 3 April, 202624.6mph WAverage April7.5mphStrongest 12 March, 202624.6mph SWAverage March6.9mphStrongest 16 February, 202624.6mph WNWAverage 20267.1mphClimate (2011–Present)Northolt (5km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202238mph WSWAverage 2021–20266.3mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average April20%11.25%2.5%CalmStrongApril Wind RoseApril (5 Year Average)5 Year Average Annual5 Year Average April15%8.75%2.5%CalmStrongGet WillyWeather+ to remove ads