The weather in Hilton Head Island in August is very hot. The average temperatures are between 26°C and 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Hilton Head Island. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Hilton Head Island in August 2025.
If you’re planning to visit Hilton Head Island in the near future, we highly recommend that you review the 14 day weather forecast for Hilton Head Island before you arrive.
Temperatures
31° / 26°
Rainy Days
14
Snowy Days
0
Dry Days
17
Rainfall
309
mm
Sun Hours
11.3
Hrs
