It is interesting when you are trying to find an anchorage on one of these islands. From the chart and wind direction it looks like there should be no wind waves since they would have to 'bend' (refract) much more than 90° around the point of the island to get you - but they do.
I agree also about the effect of swells. In deep water you have quite long easy swells but when you get close to shore the wave length shortens and the waves get higher.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.