Mamalu Bay Rainfall ForecastUnited StatesHIMauiMamalu BayToday 18 Apr75%Sat 19 Apr35%Sun 20 Apr35%Mon 21 Apr35%Tue 22 Apr50%Wed 23 Apr50%Thu 24 Apr50%Mamalu Bay rainfall forecast issued today at 6:04 pm. Next forecast at approx. 8:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Kohala RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads