The word caste is actually a corrupted Portuguese word. The more useful term for sociological groupings is Jati.. Jati as used in South Asia is a very close fit to the definition of people group..
Water temperatures in the Virgin Islands do not change greatly from summer to winter, however the 4 or 5 degree change is noticeable to those acclimated to consistently warm tropical weather. In the summer months the water temperature is about 83 degrees and in the winter about 79 degrees.
Typical Weather in December. December temperatures in the Virgin Islands range from an average low of 74.0 degrees to an average high of 85.0 degrees. On a typical December day, during the early morning hours you will probably find the temperature will be around 77.0 degrees.