Current sea water temperature:
+87.1°F
| Minimum sea water temperature in August: | 89.4°F |
| Maximum sea water temperature in August: | 83.1°F |
| Average sea water temperature in August: | 85.9°F |
| more information | |
14 days
forecast
forecast
| Cayo Guillermo |
monthly
weather
weather
| Cayo Guillermo |
Sea water temperature for the last 10 days:
| August 4 | 87.1°F | July 30 | 87.4°F |
| August 3 | 87.3°F | July 29 | 86.4°F |
| August 2 | 87.6°F | July 28 | 86.7°F |
| August 1 | 87.4°F | July 27 | 86.4°F |
| July 31 | 87.6°F | July 26 | 86.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Cayo Guillermo?
Based on the data about daily sea water temperature for the last three years the warmest sea in Cayo Guillermo was noticed in September, August and July.
Monthly Sea Temperatures in Cayo Guillermo, °F
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.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.8°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 86.4°F. The highest and lowest sea temperatures during the month were 87.6°F and 85.6°F.
current
weather
weather
| Cayo Guillermo |
weather in
August
August
| Cayo Guillermo |
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: 10:15
August 04, tuesday
1200
86°F
NW
13 mph
13 mph
1500
86°F
W
15 mph
15 mph
1800
86°F
W
19 mph
19 mph
2100
86°F
W
18 mph
18 mph
August 05, wednesday
0000
84°F
W
20 mph
20 mph
0300
84°F
W
14 mph
14 mph
0600
82°F
W
14 mph
14 mph
0900
84°F
NW
19 mph
19 mph
