Weather in Cayo Guillermo: September
 |
Average day temperature: | 86.1°F |
| Average night temperature: | 81.0°F | |
 |
Sea water temperature: | 85.9°F |
 |
Number of sunny days: | 11 days |
| Day length: | 11.9 - 12.6 hours | |
 |
Number of rainy days: | 6 days |
| Precipitation totals: | 4.4 in. | |
| more information | ||
forecast
| Cayo Guillermo |
temperature
| Cayo Guillermo |
Air temperature in September, °F
| Day temperature | Night temperature |
The highest day temperature during September of 2024 was 87°F. At the same time the lowest night temperature was 82°F. Daily and nightly averages during September were 85.1°F and 83.5°F.
Sea water temperature in Cayo Guillermo in September, °F
The average sea water temperature in September of 2024 was 87.2°F. The highest and lowest sea temperatures during the month were 89.6°F and 85.8°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Cayo Guillermo in September is 5.5 in. Other months of the year show relatively similar values.
The average wind speed value in September is 11.5 mph It makes September lest windy month 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 September is: 7.5.
Best time for vacation in Cayo Guillermo
Cayo Guillermo on a weather map
20 mph
19 mph
19 mph
19 mph
19 mph
19 mph
18 mph
19 mph
