Grand Cayman Weather: August
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Average Day Temperature: | 91.3°F |
|
Average Night Temperature: | 87.4°F |
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Sea Water Temperature: | 89.9°F |
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Number of Sunny Days: | 8 days |
| Sunshine Hours: | 12.5 - 13.0 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 3.3 in | |
| detailed information | ||
forecast
| Grand Cayman |
Temperature
| Grand Cayman |
Air Temperature in August, °F
The highest day temperature in August 2025 was 93°F. The lowest night temperature was 86°F. The average values for day and night temperatures during August were 91.1°F и 87.8°F respectivly.
Grand Cayman Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Grand Cayman was 91.0°F. The maximum and minimum values were 89.8°F and 91.6°F respectively.
Most of the days in August are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Grand Cayman is 3.3 in.
The average wind speed in August is 11.8 mph. It makes August one of the most windless months of the year for Grand Cayman.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grand Cayman in August is 7.5 hours.
Grand Cayman on the Weather Map
| 0600 |  |
84°F | W 18 mph |
| 0900 |  |
86°F | W 19 mph |
| 1200 | |
86°F | W 16 mph |
| 1500 |  |
88°F | W 15 mph |
| 1800 |  |
86°F | W 14 mph |
| 2100 | |
86°F | W 12 mph |
| 0000 | |
86°F | W 10 mph |
| 0300 | |
84°F | W 11 mph |