Reading the coastline
In one of our guidebooks I read a bit about examining the coastline of a bay to see what kind of extreme weather it gets. For example, if you see a lot of logs on shore, they were blown in by storms. Depending on which side they are on, you can get a sense of what types of storms charge into the bay. Similarly, in a densely forested bay you can look at the tree line to see if it grows all of the way to the high water mark, indicating a calm bay, or if it is higher on one side, indicating that that side gets pounded by surf.
Food for thought.