Portsmouth Harbour - HMNB Portsmouth Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - HMNB Portsmouth1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - HMNB Portsmouth wind forecast issued today at 12:02 am. Next forecast at approx. 12:02 pm.Portsmouth Harbour - HMNB Portsmouth Wind Statistics January WindThorney Island (8.1 miles)2021DecemberJanuaryStrongest 12 January, 202122.4mph WSWAverage January7.2mphStrongest 27 December, 202042.5mph SWAverage December10.1mphStrongest 12 January, 202122.4mph WSWAverage 20217.2mphClimate (2011–Present)Thorney Island (8.1 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 March, 202051.4mph SWAverage 2011–Present9.2mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average January15%8.75%2.5%CalmStrong GaleJanuary Wind RoseJanuary (5 Year Average)5 Year Average Annual5 Year Average January15%8.75%2.5%CalmStrong GaleGet an account to remove ads