Grand Isle Wind ForecastUnited StatesLAJefferson ParishGrand Isle1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast NOAAWind Real-Time Grand Isle wind forecast issued today at 11:22 pm. Next forecast at approx. 11:22 am.Grand Isle Wind Statistics May WindPort Fourchon (14.9 miles)2026AprilMayStrongest – Average May–Strongest – Average April–Strongest – Average 2026–Climate (2011–Present)Port Fourchon (14.9 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 29 September, 202023mph NNEAverage –18mphGet WillyWeather+ to remove ads