Current sea water temperature:
+85.6°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 4 | 85.6°F | May 29 | 83.3°F |
| June 3 | 85.1°F | May 28 | 83.5°F |
| June 1 | 84.0°F | May 27 | 83.3°F |
| May 31 | 83.3°F | May 26 | 83.3°F |
| May 30 | 82.4°F | May 25 | 84.0°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: 21:44
June 05, friday
0000
79°F
W
19 mph
19 mph
0300
79°F
W
14 mph
14 mph
0600
81°F
W
11 mph
11 mph
0900
81°F
W
7 mph
7 mph
1200
81°F
SW
7 mph
7 mph
1500
81°F
SW
11 mph
11 mph
1800
81°F
SW
14 mph
14 mph
2100
79°F
SW
14 mph
14 mph
