Mexwx (Weather-Radio for Boaters in Mexico)

Seems like every cruising boat has a copy of this onboard. It's a great reference about many of the local weather phenomena affecting boaters -- areas of katabatic winds, summer chubascos (wicked thunderstorms), hurricanes and the Tehuantepeckers -- and how to minimize your risk from each. Note that it's over 10 years old now, so some of the resources listed (radio frequencies, etc.) have changed. Don't worry -- friendly boaters will give you the current information on that stuff. The basic weather patterns haven't changed, and that's the real reason to buy this book.