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 12:09 am. Next forecast at approx. 12:09 pm.Portland Harbour Wind Statistics November WindIsle Of Portland (6km)2025OctoberNovemberStrongest 24 November, 202535.8mph WAverage November16.3mphStrongest 4 October, 202542.5mph WAverage October16.3mphStrongest 1 January, 202544.7mph SWAverage 202513.3mphClimate (2011–Present)Isle Of Portland (6km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202262.6mph WSWAverage 2020–202513.6mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average November20%11.25%2.5%CalmStrong GaleNovember Wind RoseNovember (5 Year Average)5 Year Average Annual5 Year Average November22.5%12.5%2.5%CalmStrong GaleGet WillyWeather+ to remove ads