Located in the northwest Caribbean at 19 N 81 W the three Cayman Islands enjoys mainly tropical weather conditions with slight seasonal variation. The unique position places the Cayman Islands far enough north to be affected by cold front during the winter and still within the belt that is influenced by tropical waves and hurricanes during the summer. Climatically the year can be divided into two seasons-the wet, summer season, generally from mid-May through October and the dry, winter season, from November to April.

Dry, winter season

 Occasional surges of cooler air from continental North America, the leading edge of which is called a cold front is the main winter system affecting the Cayman Islands from late October through early April. These systems are the major producers of rainfall during the winter months although precipitation is not quite as long lasting or of the same amounts as with summertime systems.  (More)

 Wet, summer season

Perturbations in the easterlies or tropical waves are the main summer systems affecting the Cayman Islands from late May through November. During these months the systems move through the Cayman area roughly every four to five days but can all but disappear for a few weeks. The stronger of these systems tend to bring a day or two of cloudiness, heavy showers and thundershowers during their passage and strong southeast winds after their passage. The chart below shows the rainfall distribution during the passage of one such system. (More)