Climate of Cayman Islands
In general the weather is good all year and the trade winds ensure it doesn’t get too hot. Peak season runs between December and April. The rainy season runs from May to November and visitors are advised to keep an eye on the weather reports in the days before arrival as there is a slim chance of hurricanes. Many regard the wet season as the best time to visit - room rates are cheaper, the beaches less crowded and the rain comes in short, sharp bursts that does not impact on holiday fun. The average winter temperature is 76F which goes up to an average of 86F in the summer. Humidity levels range from an average of 68% to 92%.
The stabilizing influence of the sea on small land masses makes for a relatively unchanging climate. The small seasonal variation is overlaid in the winter by the occasional cold front moving south from the United States and in the summer or autumn months by the occasional tropical storm or hurricane moving through the region.
Temperatures Temperatures are lowest in February, ranging from lows of 70 degrees to highs of 86 degrees Fahrenheit (21 to 30 degrees Celcius). July and August are the hottest months when temperatures can range from 85 to 95 degrees Fahrenheit (29 to 35 degrees Celcius). Relative humidity varies from 68 percent to 92 percent
Rainfall Rainfall is generally seasonal Typically the rainy season starts in May with maximum rainfall in September. The months before the rainy season, March and April, are often very arid. Cayman Brac is generally drier than Grand Cayman.