Black Rock Sands Porthmadog Wind ForecastUnited KingdomWLGwyneddBlack Rock Sands Porthmadog1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met Office Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Black Rock Sands Porthmadog wind forecast issued today at 1:09 am. Next forecast at approx. 1:09 pm.Black Rock Sands Porthmadog Wind Statistics July WindCapel Curig Saws (26km)2025JuneJulyStrongest 4 July, 202535.8mph SWAverage July9.8mphStrongest 3 June, 202547mph SWAverage June14.8mphStrongest 24 January, 202553.7mph SWAverage 202511.3mphClimate (2011–Present)Capel Curig Saws (26km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 21 January, 202458.2mph SWAverage 2020–202512.1mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average July27.5%15%2.5%CalmGaleJuly Wind RoseJuly (5 Year Average)5 Year Average Annual5 Year Average July35%18.75%2.5%CalmGaleGet WillyWeather+ to remove ads