Weather in Cayo Guillermo: October
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Average day temperature: | 83.8°F |
| Average night temperature: | 79.7°F | |
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Sea water temperature: | 84.2°F |
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Number of sunny days: | 9 days |
| Day length: | 11.3 - 11.9 hours | |
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Number of rainy days: | 7 days |
| Precipitation totals: | 4.4 in. | |
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forecast
| Cayo Guillermo |
temperature
| Cayo Guillermo |
Air temperature in October, °F
The highest day temperature during October of 2025 was 86°F. At the same time the lowest night temperature was 77°F. Daily and nightly averages during October were 82.6°F and 80.7°F.
Sea water temperature in Cayo Guillermo in October, °F
The average sea water temperature in October of 2025 was 84.6°F. The highest and lowest sea temperatures during the month were 87.1°F and 82.6°F.
Mostly all days in October are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in October, in.
Precipitation total value in Cayo Guillermo in October is 4.1 in. Other months of the year show relatively similar values.
The average wind speed value in October is 12.9 mph It makes October one of the least windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 6.7.
Best time for vacation in Cayo Guillermo
Cayo Guillermo on a weather map
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