World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman 14 Days Forecast

23.09
wed
Day
84°F
N 16 mph
Precip.
21%
Night
82°F
W 12 mph
Precip.
69%
24.09
thu
Day
81°F
S 3 mph
Precip.
66%
Night
84°F
SW 12 mph
Precip.
13%
25.09
fri
Day
84°F
NW 7 mph
Precip.
20%
Night
84°F
W 9 mph
Precip.
9%
26.09
sat
Day
84°F
W 9 mph
Precip.
20%
Night
84°F
W 9 mph
Precip.
19%
27.09
sun
Day
84°F
W 6 mph
Precip.
12%
Night
84°F
W 6 mph
Precip.
19%
28.09
mon
Day
84°F
NW 9 mph
Precip.
19%
Night
84°F
W 14 mph
Precip.
19%
29.09
tue
Day
82°F
NW 11 mph
Precip.
62%
Night
82°F
NW 23 mph
Precip.
19%
30.09
wed
Day
84°F
NW 23 mph
Precip.
12%
Night
82°F
NW 19 mph
Precip.
70%
01.10
thu
Day
84°F
NW 24 mph
Precip.
21%
Night
84°F
NW 22 mph
Precip.
20%
02.10
fri
Day
84°F
NW 22 mph
Precip.
32%
Night
84°F
NW 19 mph
Precip.
15%
03.10
sat
Day
84°F
N 14 mph
Precip.
21%
Night
84°F
NW 16 mph
Precip.
11%
04.10
sun
Day
84°F
NW 14 mph
Precip.
23%
Night
84°F
NW 15 mph
Precip.
21%
05.10
mon
Day
84°F
NW 17 mph
Precip.
9%
Night
84°F
NW 17 mph
Precip.
21%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 87.7°F. The highest and lowest sea temperatures during the month were 88.3°F and 87.1°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 88.3°F and 85.3°F.

Air temperature in Grand Cayman, °F

Precipitation total in Grand Cayman, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Grand Cayman

Sunniest months:
July 10 days
March 10 days
September 10 days
Warmest months:
August 87.0 °F
September 86.9 °F
July 86.8 °F
Warmest sea temp:
September 86.2 °F
August 86.0 °F
October 85.5 °F
Coldest months:
January 80.1 °F
February 80.3 °F
March 80.9 °F
Rainiest months:
October 8 days
May 5 days
November 5 days
Windiest months:
December 16.8 mph
November 16.1 mph
January 15.7 mph

Grand Cayman on a weather map

Current weather
00:26
Grand Cayman
+82°F
NW 23 mph
Feels like: +90°F
Precip.: 26%
Places in Cayman Islands:
Name
°F
Grand Cayman
+82°F
George Town
+82°F
Cayman Brac
+81°F
Little Cayman
+81°F
24 Hours Forecast
Grand Cayman
Local time: 00:26
September 23, wednesday
0300
82°F
NW
26 mph
0600
82°F
NW
22 mph
0900
84°F
NW
17 mph
1200
84°F
N
16 mph
1500
84°F
NW
11 mph
1800
82°F
NW
6 mph
2100
82°F
SW
11 mph
September 24, thursday
0000
82°F
W
12 mph
Units of measurement: °C / °F