At 5 to 25 feet above sea level, Charlotte Harbor & The Gulf Islands enjoy a climate characterized as sub-tropic, where extremes of temperature in both summer and winter are checked by the tempering influence of the Gulf of Mexico. Prevailing winds are an easterly average of 12-18mph.

The annual average temperature is 73.9 degrees. The average of the low month is 63 degrees, and the average of the high month, August, is 82.8 degrees. During the summer, the temperature is usually in the low 90’s during the day and in the low 70’s during the night.

Rainfall is typical for a sub tropical climate with approximately two-thirds occurring June through September. These rains have a cooling effect during the hot summer days.