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 1:31 am. Next forecast at approx. 1:31 pm. Wind Speed Wind GustGrand Isle Wind Statistics August WindPort Fourchon (14.9 miles)2026JulyAugustStrongest – Average August–Strongest – Average July–Strongest – Average 2026–Climate (–)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