Current sea water temperature:
+79.7°F
| Minimum sea water temperature in April: | 84.2°F |
| Maximum sea water temperature in April: | 76.1°F |
| Average sea water temperature in April: | 80.1°F |
| more information | |
14 days
forecast
forecast
| Cayo Guillermo |
monthly
weather
weather
| Cayo Guillermo |
Sea water temperature for the last 10 days:
| April 25 | 79.7°F | April 20 | 80.2°F |
| April 24 | 79.2°F | April 19 | 79.7°F |
| April 23 | 79.9°F | April 18 | 79.3°F |
| April 22 | 81.3°F | April 17 | 78.4°F |
| April 21 | 80.4°F | April 16 | 77.7°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
April
April
| 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: 14:40
April 25, saturday
1500
79°F
SW
9 mph
9 mph
1800
77°F
SW
17 mph
17 mph
2100
77°F
W
13 mph
13 mph
April 26, sunday
0000
77°F
W
14 mph
14 mph
0300
77°F
W
12 mph
12 mph
0600
77°F
W
11 mph
11 mph
0900
77°F
W
9 mph
9 mph
1200
77°F
W
7 mph
7 mph
