Weather and winds can affect performance, comfort and safety in sailing. Always check the weather Forecast before you head down to the docks.
The Sailflow.com link below is set for the local area wind forecasts, and while the site has tidal currents and other info, their wind model is usually spot on for the membership up in CIH, and as you can see Santa Monica Bay is covered in the same map.
WindyTV is a site that provides wind, temperature, seas, etc. Left click on a location for detailed info.
The NOAA also provides customized weather conditions that are updated frequently for both Marina del Rey and Channel Islands Harbor: NOAA Buoy and Coastal forecast for Los Angeles/Oxnard