Current sea water temperature:
+86.4°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 16 | 86.4°F | August 11 | 86.4°F |
| August 15 | 86.0°F | August 10 | 86.9°F |
| August 14 | 86.0°F | August 9 | 87.1°F |
| August 13 | 86.2°F | August 8 | 86.7°F |
| August 12 | 86.5°F | August 7 | 87.6°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 86.9°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.0°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: 11:46
August 16, sunday
1200
84°F
W
19 mph
19 mph
1500
84°F
W
17 mph
17 mph
1800
84°F
W
17 mph
17 mph
2100
84°F
W
21 mph
21 mph
August 17, monday
0000
84°F
W
20 mph
20 mph
0300
82°F
W
18 mph
18 mph
0600
82°F
W
17 mph
17 mph
0900
82°F
W
17 mph
17 mph
