Hilton Head Island Weather in August

August in Hilton Head Island brings very high temperatures around 32°C (90°F) during the day, dropping to 24°C (75°F) at night, with the most rainfall of the year.

Rainfall in Hilton Head Island in August

Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. Historically, the month has about 16 days of rain, averaging 199 mm (7.8 in) in total. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Hilton Head Island in August

Daytime temperatures in Hilton Head Island reach 32°C (90°F) in August, dropping to 24°C (75°F) at night. It's usually most comfortable outside during the morning and later in the day. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Hilton Head Island in August

Enjoy a sunny month with about 251 hours of sunshine, the clear skies make Hilton Head Island even more beautiful.

Average water temperature in August

The water reaches 29°C (84°F) this month. It's on the warm side, which suits people who prefer that, but don't expect a cooling dip if the air temperature is also high.

August in Hilton Head Island has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.