Weather in the Cayman Islands in August

Temperatures remain near their peak and rainfall begins to slowly drop off during the month of August in the Cayman Islands. The month also marks the beginning of a period of the greatest chance to see severe tropical weather. This is still unlikely however, as most severe weather passes to the north of the islands, due to its westerly location.

Typical Weather in August

During August the temperatures in the Cayman Islands typically vary between a daily high of about 88.0 degrees and a daily low of approximately 80.0 degrees . On average, it rains in the Cayman Islands a total of 7.0 days during the month , with an average total rainfall of about 6.7 inches . Bear in mind, however, that all precipitation, no matter how slight, is considered in the tables on this page.


The Cayman Islands in August: Key Facts
Monthly Averages
High Low Rainfall
No. of Days
with Rain
88.0° F 80.0° F 6.7 7.0

On a typical August day, during the early morning hours you will probably find the temperature will be around 80.4 degrees. In August, temperatures typically rise to around 87.1 degrees by early afternoon. The temperature in the Cayman Islands will typically decline by early evening, to approximately 82.8 degrees. Overall, temperatures in the Cayman Islands during August average around 84.6 degrees.


August Temperatures in The Cayman Islands by Time of Day
Early Morning Late Morning Early Afternoon Late Afternoon Early Evening Overall
80.4° F 86.5° F 87.1° F 86.2° F 82.8° F 84.6° F



During August, rain is most likely to occur around 4:00 PM, and least likely to occur around 7:00 PM. As shown below, if a thunderstorm occurs in August, it is most likely to occur around 4:00 PM.


August 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 4.7 % 4.1 %
10:00 AM 4.6 % 2.6 %
1:00 PM 5.3 % 5.3 %
4:00 PM 8 % 7 %
7:00 PM 4.2 % 3.3 %
10:00 PM # #
ALL 5.5 % 4.5 %

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