August temperatures in the Caribbean range from an average low of 77.9 degrees to an average high of 87.9 degrees. During the month of August, it rains an average of 11.9 days, with an average total rainfall of about 6.3 inches. However, the data in these tables includes all precipitation, no matter how slight.

During the early morning hours of an average August day in the Caribbean, you can expect the temperature will be in the vicinity of 79.8 degrees. Temperatures in the Caribbean typically rise during the day, to an average of 86.9 degrees in the early afternoon. By early evening, temperatures in the Caribbean generally decline to around 81.7 degrees. Overall, temperatures in the Caribbean during August average around 82.6 degrees.

January, February, March, April, May, June, July, August, September, October, November, December.