RNAS Portland Heliport Airport Wind ForecastUnited KingdomSWDorsetRNAS Portland Heliport Airport1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time RNAS Portland Heliport Airport wind forecast issued today at 1:09 pm. Next forecast at approx. 1:09 am. Wind Speed Wind GustRNAS Portland Heliport Airport Wind Statistics August WindIsle Of Portland (5km)2026JulyAugustStrongest 1 August, 202617.9mph NNWAverage August11.2mphStrongest 2 July, 202626.8mph WAverage July9.5mphStrongest 9 January, 202644.7mph NWAverage 202614.1mphClimate (2021–2026)Isle Of Portland (5km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202262.6mph WSWAverage 2021–202613.8mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average August20%11.25%2.5%CalmGaleAugust Wind RoseAugust (5 Year Average)5 Year Average Annual5 Year Average August22.5%12.5%2.5%CalmGaleGet WillyWeather+ to remove ads