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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.
| Monthly Averages | | High | Low | Rainfall
(inches) | No. of Days
with Rain |
| 86.0° F |
78.0° F |
5.1 |
5.0 |
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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.
| 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 |
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Rain
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.
| Percent Frequencies of Hourly Observations | | Hour | Rain
and/or
Drizzle | Thunder-
storms |
| 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 % |
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