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 6:38 pm. Next forecast at approx. 6:38 am.Grand Isle Wind Statistics December WindPort Fourchon (14.9 miles)2025NovemberDecemberStrongest – Average December–Strongest – Average November–Strongest – Average 2025–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