13.09
sun
sun
Day
86°F
W 13 mph
Precip.
11%
11%
Night
84°F
W 13 mph
Precip.
17%
17%
14.09
mon
mon
Day
84°F
W 11 mph
Precip.
14%
14%
Night
84°F
W 17 mph
Precip.
24%
24%
15.09
tue
tue
Day
84°F
W 13 mph
Precip.
65%
65%
Night
84°F
W 17 mph
Precip.
7%
7%
16.09
wed
wed
Day
84°F
W 15 mph
Precip.
20%
20%
Night
82°F
W 15 mph
Precip.
71%
71%
17.09
thu
thu
Day
84°F
W 11 mph
Precip.
31%
31%
Night
81°F
NW 8 mph
Precip.
22%
22%
18.09
fri
fri
Day
82°F
W 6 mph
Precip.
5%
5%
Night
82°F
W 15 mph
Precip.
34%
34%
19.09
sat
sat
Day
84°F
W 6 mph
Precip.
6%
6%
Night
84°F
W 11 mph
Precip.
47%
47%
sea water
temperature
temperature
| Cayo Guillermo |
monthly
weather
weather
| Cayo Guillermo |
current
weather
weather
| Cayo Guillermo |
14 days
forecast
forecast
| Cayo Guillermo |
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 87.3°F. The highest and lowest sea temperatures during the month were 88.3°F and 86.5°F.
Air temperature in Cayo Guillermo, °F
Precipitation total in Cayo Guillermo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cayo Guillermo
Cayo Guillermo on a weather map
Places in Cuba:
Name
°F
24 Hours Forecast
Cayo Guillermo
Local time: 18:46
September 13, sunday
2100
84°F
W
14 mph
14 mph
September 14, monday
0000
84°F
W
13 mph
13 mph
0300
84°F
W
14 mph
14 mph
0600
84°F
W
13 mph
13 mph
0900
84°F
W
14 mph
14 mph
1200
84°F
W
11 mph
11 mph
1500
86°F
SW
14 mph
14 mph
1800
84°F
SW
15 mph
15 mph
