Hilton Head Island Weather: August
 |
Average Day Temperature: | 89.5°F |
|
Average Night Temperature: | 80.0°F |
|
Sea Water Temperature: | 89.1°F |
|
Number of Sunny Days: | 4 days |
| Sunshine Hours: | 12.8 - 13.7 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 2.6 in | |
| detailed information | ||
forecast
| Hilton Head Island |
Temperature
| Hilton Head Island |
Air Temperature in August, °F
The highest day temperature in August 2025 was 95°F. The lowest night temperature was 77°F. The average values for day and night temperatures during August were 85.7°F и 81.5°F respectivly.
Hilton Head Island Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Hilton Head Island was 88.9°F. The maximum and minimum values were 85.4°F and 93.2°F respectively.
Most of the days in August are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Hilton Head Island is 2.6 in. It makes august the most rainy month of the year.
The average wind speed in August is 7.0 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 Hilton Head Island in August is 6.3 hours.
Hilton Head 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 |  |
54°F | NW 6 mph |
| 0600 | |
52°F | S 4 mph |
| 0900 | |
56°F | SW 7 mph |
| 1200 | |
54°F | SW 6 mph |
| 1500 | |
52°F | SE 8 mph |
| 1800 | |
52°F | SE 8 mph |
| 2100 |  |
52°F | SW 4 mph |
| 0000 | |
50°F | SE 6 mph |