Current sea water temperature:
+86.5°F
| Minimum sea water temperature in June: | 88.0°F |
| Maximum sea water temperature in June: | 80.8°F |
| Average sea water temperature in June: | 84.1°F |
| more information | |
14 days
forecast
forecast
| Cayo Guillermo |
monthly
weather
weather
| Cayo Guillermo |
Sea water temperature for the last 10 days:
| June 24 | 86.5°F | June 19 | 86.5°F |
| June 23 | 86.0°F | June 18 | 86.9°F |
| June 22 | 86.5°F | June 17 | 85.8°F |
| June 21 | 86.2°F | June 16 | 86.5°F |
| June 20 | 86.5°F | June 15 | 85.3°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 85.3°F. The highest and lowest sea temperatures during the month were 86.2°F and 83.8°F.
current
weather
weather
| Cayo Guillermo |
weather in
June
June
| 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: 02:06
June 25, thursday
0300
82°F
W
17 mph
17 mph
0600
82°F
W
18 mph
18 mph
0900
84°F
W
17 mph
17 mph
1200
84°F
W
16 mph
16 mph
1500
84°F
W
17 mph
17 mph
1800
84°F
W
17 mph
17 mph
2100
84°F
W
20 mph
20 mph
June 26, friday
0000
84°F
W
19 mph
19 mph
