Portland Harbour Wind ForecastUnited KingdomSWDorsetPortland Harbour1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portland Harbour wind forecast issued today at 6:05 am. Next forecast at approx. 6:05 pm.Portland Harbour Wind Statistics January WindIsle Of Portland (3.7 miles)2020DecemberJanuaryStrongest 13 January, 202042.5mph SSWAverage January15.9mphStrongest 9 December, 201951.4mph WNWAverage December18.3mphStrongest 13 January, 202042.5mph SSWAverage 202015.9mphClimate (2011–Present)Isle Of Portland (3.7 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 29 December, 201755.9mph WAverage 2011–Present13.9mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average January20%11.25%2.5%CalmStrong GaleJanuary Wind RoseJanuary (5 Year Average)5 Year Average Annual5 Year Average January17.5%10%2.5%CalmStrong GaleGet an account to remove ads