Portsmouth Harbour - Pewit Island Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - Pewit Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - Pewit Island wind forecast issued today at 6:11 pm. Next forecast at approx. 6:11 am.Portsmouth Harbour - Pewit Island Wind Statistics November WindThorney Island (15km)2025OctoberNovemberStrongest 1 November, 202526.8mph SSWAverage November12.3mphStrongest 4 October, 202531.3mph WAverage October8.9mphStrongest 1 January, 202535.8mph SWAverage 20258.2mphClimate (2011–Present)Thorney Island (15km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202249.2mph WSWAverage 2020–20258.4mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average November15%8.75%2.5%CalmNear GaleNovember Wind RoseNovember (5 Year Average)5 Year Average Annual5 Year Average November20%11.25%2.5%CalmNear GaleGet WillyWeather+ to remove ads