Castletown Wind ForecastUnited KingdomSWDorsetCastletown1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Castletown wind forecast issued today at 12:10 am. Next forecast at approx. 12:10 pm.Castletown Wind Statistics December WindIsle Of Portland (5km)2025NovemberDecemberStrongest 5 December, 202544.7mph SAverage December18.8mphStrongest 24 November, 202535.8mph WAverage November16.9mphStrongest 1 January, 202544.7mph SWAverage 202513.6mphClimate (2011–Present)Isle Of Portland (5km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202262.6mph WSWAverage 2020–202513.7mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average December20%11.25%2.5%CalmStrong GaleDecember Wind RoseDecember (5 Year Average)5 Year Average Annual5 Year Average December15%8.75%2.5%CalmStrong GaleGet WillyWeather+ to remove ads