Harold Hill Wind ForecastUnited KingdomSEGreater LondonHarold Hill1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Harold Hill wind forecast issued today at 6:10 pm. Next forecast at approx. 6:10 am.Harold Hill Wind Statistics December WindAndrewsfield (35km)2025NovemberDecemberStrongest 7 December, 202526.8mph WSWAverage December8.5mphStrongest 1 November, 202520.1mph SWAverage November7.2mphStrongest 1 January, 202535.8mph SWAverage 20256.6mphClimate (2011–Present)Andrewsfield (35km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202247mph WAverage 2020–20256.8mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average December15%8.75%2.5%CalmNear GaleDecember Wind RoseDecember (5 Year Average)5 Year Average Annual5 Year Average December17.5%10%2.5%CalmNear GaleGet WillyWeather+ to remove ads