Measurements:
°C
°F
CURRENT WEATHER
10:26
Grand Cayman
84°F
NW 9 mph
Feels like: 90°F
Precip: 0%
World Resorts Cayman Islands Grand Cayman Weather

7 Day Weather Forecast

05.14
thu
DAY
86°F
NW 9 mph
precip
0%
NIGHT
86°F
W 7 mph
precip
0%
05.15
fri
DAY
86°F
W 12 mph
precip
0%
NIGHT
86°F
W 10 mph
precip
0%
05.16
sat
DAY
86°F
W 17 mph
precip
0%
NIGHT
86°F
W 15 mph
precip
71%
05.17
sun
DAY
86°F
W 16 mph
precip
0%
NIGHT
86°F
W 15 mph
precip
0%
05.18
mon
DAY
88°F
W 16 mph
precip
78%
NIGHT
86°F
W 9 mph
precip
50%
05.19
tue
DAY
86°F
W 11 mph
precip
42%
NIGHT
86°F
W 9 mph
precip
100%
05.20
wed
DAY
86°F
W 9 mph
precip
26%
NIGHT
86°F
W 8 mph
precip
49%

Grand Cayman Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Grand Cayman was 28.8°F. The maximum and minimum values were 27.7°F and 29.7°F respectively.

Grand Cayman on the Weather Map

Best Time to Visit Grand Cayman
The most sunny months:
July 11 days
May 10 days
March 10 days
The most warm months:
August 91.3 °F
July 91.1 °F
September 91.0 °F
Warmest sea temperature:
September 90.1 °F
August 89.9 °F
October 89.5 °F
The most cold months:
January 83.4 °F
February 83.6 °F
March 84.3 °F
The most rainy months:
October 8 days
May 5 days
November 5 days
The most windy months:
December 16 mph
November 16 mph
January 16 mph
more details