Old St Mellons Wind ForecastUnited KingdomWLCardiffOld St Mellons1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Old St Mellons wind forecast issued today at 7:11 am. Next forecast at approx. 7:11 pm.Old St Mellons Wind Statistics October WindSt-athan (26km)2025SeptemberOctoberStrongest 6 October, 202515.7mph WAverage October3.4mphStrongest 15 September, 202531.3mph WAverage September8.6mphStrongest 16 April, 202535.8mph WAverage 20257.6mphClimate (2011–Present)St-athan (26km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202447mph WAverage 2020–20257.7mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average October27.5%15%2.5%CalmNear GaleOctober Wind RoseOctober (5 Year Average)5 Year Average Annual5 Year Average October35%18.75%2.5%CalmNear GaleGet WillyWeather+ to remove ads