Weather in Tybee Island: September
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Average day temperature: | 81.9°F |
| Average night temperature: | 74.2°F | |
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Sea water temperature: | 81.8°F |
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Number of sunny days: | 11 days |
| Day length: | 11.9 - 12.8 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.2 in. | |
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forecast
| Tybee Island |
temperature
| Tybee Island |
Air temperature in September, °F
The highest day temperature during September of 2026 was 90°F. At the same time the lowest night temperature was 67°F. Daily and nightly averages during September were 81.9°F and 79.5°F.
Sea water temperature in Tybee Island in September, °F
The average sea water temperature in September of 2026 was 83.4°F. The highest and lowest sea temperatures during the month were 86.2°F and 78.1°F.
Number of sunny, partly cloudy and cloudy days in September is almost equal.
Precipitation total in September, in.
Precipitation total value in Tybee Island in September is 1.2 in. Other months of the year show relatively similar values.
The average wind speed value in September is 8.1 mph The wind's strength is relatively same during the whole 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: 7.3.
Best time for vacation in Tybee Island
Tybee Island on a weather map
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