Portsmouth Harbour - Haslar Marina Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - Haslar Marina1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - Haslar Marina wind forecast issued today at 12:13 am. Next forecast at approx. 12:13 pm.Portsmouth Harbour - Haslar Marina Wind Statistics January WindThorney Island (14km)2025DecemberJanuaryStrongest 1 January, 202535.8mph SWAverage January6.5mphStrongest 7 December, 202433.6mph WAverage December9.4mphStrongest 1 January, 202535.8mph SWAverage 20256.5mphClimate (2011–Present)Thorney Island (14km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 March, 202051.4mph SWAverage 2020–20258.8mphWind 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 WillyWeather+ to remove ads