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.
In South Africa doing lots of boat stuff. Departure north from Cape Town around December 15th. Arrival in the Caribbean around the beginning of February, after 5300 miles or so.