Weather in the Cayman Islands in May

May signals the beginning of the rainy season in the Cayman Islands and features a drastic increase in rainfall from the dry previous months. Visitors should not be concerned however, as the showers are scattered and generally short-lived.

Typical Weather in May

Temperatures in the Cayman Islands during May generally vary between an average high during the day of 86.0 degrees and an average low at night of 78.0 degrees . Rain occurs in the Cayman Islands a total of 5.0 days during an average May , with an average total rainfall of about 5.1 inches . Nevertheless, all precipitation, no matter how slight, is included in these tables.


The Cayman Islands in May: Key Facts
Monthly Averages
High Low Rainfall
No. of Days
with Rain
86.0° F 78.0° F 5.1 5.0

On any given day during May in the Cayman Islands, you can expect early morning temperatures to be around 79.2 degrees. In May, temperatures typically rise to around 85.2 degrees by early afternoon. By the early evening hours in May the temperature will generally fall to somewhere in the vicinity of 81.1 degrees. For the month of May as a whole, temperatures in the Cayman Islands average around 82.9 degrees.


May Temperatures in The Cayman Islands by Time of Day
Early Morning Late Morning Early Afternoon Late Afternoon Early Evening Overall
79.2° F 84.5° F 85.2° F 84.5° F 81.1° F 82.9° F



Rain is least likely to occur in the Cayman Islands during May around 7:00 AM, and it is most likely to occur around 10:00 AM. In the Cayman Islands during May, thunderstorms -- when they occur -- are most likely sometime around 7:00 AM.


May Rainfall in The Cayman Islands by Time of Day
  Percent Frequencies of Hourly Observations
Hour Rain
1:00 AM # #
4:00 AM # #
7:00 AM 1 % 1.4 %
10:00 AM 4.6 % 1.3 %
1:00 PM 3.5 % 0.6 %
4:00 PM 4.2 % 1 %
7:00 PM 2 % 0.6 %
10:00 PM # #
ALL 3.1 % 1 %


Help us improve! We welcome your corrections and suggestions.