Average sea water temperature in September:
+86.0°F
| Minimum sea water temperature in September: | 89.6°F |
| Maximum sea water temperature in September: | 83.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 86.8°F. The highest and lowest sea temperatures during the month were 88.3°F and 85.5°F.
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| Cayo Guillermo |
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| Cayo Guillermo |
Monthly sea water temperature in Cayo Guillermo, °F
Which Cuba resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Cayo Largo | 88.0°F | 88.1°F |
| Niquero | 87.9°F | 87.7°F |
| Pinar del Rio | 87.7°F | 87.3°F |
| Manzanillo | 87.6°F | 87.3°F |
| Cienfuegos | 87.5°F | 87.4°F |
| Trinidad | 87.2°F | 87.4°F |
| Cayo Coco | 86.9°F | 87.4°F |
| Santiago de Cuba | 86.9°F | 86.6°F |
| Varadero | 86.9°F | 86.6°F |
| Cayo Guillermo | 86.8°F | 87.3°F |
| Havana | 86.8°F | 86.1°F |
| Cayo Santa Maria | 86.7°F | 87.1°F |
| Santa Maria | 86.7°F | 87.1°F |
| Playa Santa Lucia | 86.0°F | 86.5°F |
| Matanzas | 85.9°F | 85.8°F |
| Baracoa | 85.7°F | 85.8°F |
| Playa Blanca | 85.4°F | 86.0°F |
| Holguin | 85.4°F | 86.0°F |
| Playa Esmeralda | 85.3°F | 86.1°F |
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: 13:12
November 13, friday
1500
77°F
E
11 mph
11 mph
1800
77°F
E
9 mph
9 mph
2100
77°F
SE
7 mph
7 mph
November 14, saturday
0000
79°F
S
7 mph
7 mph
0300
79°F
S
8 mph
8 mph
0600
77°F
S
7 mph
7 mph
0900
77°F
S
9 mph
9 mph
1200
79°F
S
11 mph
11 mph
