St. George Island Weather: September
 |
Average Day Temperature: | 86.8°F |
|
Average Night Temperature: | 79.6°F |
|
Sea Water Temperature: | 87.6°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 11.9 - 12.7 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.9 in | |
| detailed information | ||
forecast
| St. George Island |
Temperature
| St. George Island |
Air Temperature in September, °F
The highest day temperature in September 2025 was 93°F. The lowest night temperature was 71°F. The average values for day and night temperatures during September were 88.4°F и 77.3°F respectivly.
St. George Island Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for St. George Island was 87.3°F. The maximum and minimum values were 85.2°F and 89.0°F respectively.
You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in September, in
Precipitation total in September for St. George Island is 1.9 in. It makes september one of the most rainy months of the year.
The average wind speed in September is 7.7 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St. George Island in September is 7.2 hours.
St. George Island on the Weather Map
| Chicago |  |
0 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston | |
+46 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach | |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0300 |  |
66°F | NW 12 mph |
| 0600 | |
70°F | N 12 mph |
| 0900 | |
72°F | NE 8 mph |
| 1200 | |
74°F | NE 12 mph |
| 1500 | |
74°F | E 11 mph |
| 1800 | |
72°F | SE 9 mph |
| 2100 | |
62°F | S 9 mph |
| 0000 | |
58°F | SW 7 mph |