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 1:11 pm. Next forecast at approx. 1:11 am. Wind Speed Wind GustPortland Harbour Wind Statistics October WindIsle Of Portland (6 km)2026SeptemberOctoberStrongest 9 October, 202635.8 mph WAverage October13.7 mphStrongest 4 September, 202633.6 mph WSWAverage September13.5 mphStrongest 9 January, 202644.7 mph NWAverage 202613.9 mphClimate (2021–2026)Isle Of Portland (6 km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202262.6 mph WSWAverage 2021–202613.9 mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average October20%11.25%2.5%CalmStormOctober Wind RoseOctober (5 Year Average)5 Year Average Annual5 Year Average October25%13.75%2.5%CalmStormGet WillyWeather+ to remove ads