Know before you go!
Here are my favorite weather sites. I use them every time before I go flying.
NWS Forecast Discussion for San Francisco Bay Area, CA
NWS Gridpoint Forecast for Seaside, CA
NOAA Surface Analysis
NCAR's Surface Map
NPS Monterey Weather and Forecast
Soarcast for Local Flying Sites
Real time weather right at the beach with a 24 hour tracing
Get the big picture! Winds outside of the bay in the open ocean
Central and Northern California Ocean Observing System (CeNCOOS)
XCSkies Current Surface Winds
Del Monte Beach Web Cam