Measurements:
°C
°F
Little Cayman
84°F
N 2 mph
Feels like: 90°F
Precip: 0%
World Resorts Cayman Islands Little Cayman Weather

Little Cayman Sea Water Temperature

Current Sea Water Temperature:
+88.6°F
Maximum Sea Water Temperature in May: 90.2°F
Minimum Sea Water Temperature in May: 84.2°F
Average water temperature in May: 86.9°F

Sea Water Temperature for the Last 10 Days:

May 14 88.6°F May 09 87.4°F
May 13 88.4°F May 08 87.6°F
May 12 87.6°F May 07 87.4°F
May 11 88.0°F May 06 87.2°F
May 10 87.6°F May 05 87.2°F

When is the Warmest Sea for Little Cayman?

According to our data for the last three years for Little Cayman the highest average sea water temperature was in September, August and October.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Little Cayman was 91.7°F. The maximum and minimum values were 91.2°F and 92.2°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Little Cayman was 91.3°F. The maximum and minimum values were 90.2°F and 92.2°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Little Cayman was 90.8°F. The maximum and minimum values were 89.6°F and 92.0°F respectively.

Best Time to Visit Little Cayman
The most sunny months:
March 12 days
July 12 days
February 11 days
The most warm months:
August 91.1 °F
July 90.9 °F
September 90.8 °F
Warmest sea temperature:
September 90.4 °F
August 90.3 °F
October 89.6 °F
The most cold months:
January 83.0 °F
February 83.2 °F
March 83.9 °F
The most rainy months:
October 7 days
May 6 days
August 5 days
The most windy months:
December 16 mph
November 16 mph
January 15 mph

Little Cayman on the Weather Map

Cayman Islands Resorts:
NAME
Cayman Brac +84
George Town +84
Grand Cayman +84
Little Cayman +84
24 Hours Weather Forecast
Little Cayman
Local time: 10:24
14 may, thursday
1200 84°F
N
2 mph
1500 86°F
NE
1 mph
1800 86°F
S
2 mph
2100 86°F
SW
3 mph
15 may, friday
0000 86°F
W
5 mph
0300 84°F
W
6 mph
0600 84°F
SW
8 mph
0900 86°F
W
9 mph