Wilmington Island Weather: September
 |
Average Day Temperature: | 85.4°F |
|
Average Night Temperature: | 75.9°F |
|
Sea Water Temperature: | 84.9°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 11.9 - 12.8 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.2 in | |
| detailed information | ||
forecast
| Wilmington Island |
Temperature
| Wilmington Island |
Air Temperature in September, °F
The highest day temperature in September 2025 was 90°F. The lowest night temperature was 76°F. The average values for day and night temperatures during September were 84.0°F и 78.6°F respectivly.
Wilmington Island Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Wilmington Island was 83.1°F. The maximum and minimum values were 81.0°F and 84.8°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 Wilmington Island is 1.2 in.
The average wind speed in September is 7.5 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 Wilmington Island in September is 7.3 hours.
Wilmington Island on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| 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 |
| 0600 |  |
54°F | SE 4 mph |
| 0900 |  |
58°F | SW 7 mph |
| 1200 | |
54°F | SW 6 mph |
| 1500 | |
54°F | SE 9 mph |
| 1800 | |
54°F | S 9 mph |
| 2100 |  |
54°F | S 4 mph |
| 0000 |  |
52°F | SE 6 mph |
| 0300 | |
50°F | S 2 mph |