Johnston Wind ForecastUnited KingdomWLPembrokeshireJohnston1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Johnston wind forecast issued today at 1:09 am. Next forecast at approx. 1:09 pm.Johnston Wind Statistics September WindMilford Haven C.b. (6km)2025AugustSeptemberStrongest 15 September, 202535.8mph WAverage September13.3mphStrongest 30 August, 202526.8mph SAverage August7.7mphStrongest 24 January, 202544.7mph SAverage 20258.9mphClimate (2011–Present)Milford Haven C.b. (6km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202444.7mph WAverage 2020–20259.3mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average September17.5%10%2.5%CalmNear GaleSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September20%11.25%2.5%CalmNear GaleGet WillyWeather+ to remove ads