The climate in Hilton Head Island during December can be summarized as mild and reasonably dry.
December is in the winter in Hilton Head Island and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 6°C (42°F) is normal.
|Daytime temperature||16°C 60.8°F|
|Nightly temperature||5.8°C 42.4°F|
|Average temperature||10.9°C 51.6°F|
|Daily sunshine||6.2 hrs|
|Avg rainfall||75 mm 2.9 ins|
|Rainy days||8 days|
|Sea temperature||20.9°C 69.7°F|
|Windspeed||13.3kph 8 mph|
On average December is the 4th driest month of the year in Hilton Head Island with around 75mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in December 2019.
|Hottest month:||July||31.8°C 89.2°F|
|Driest month:||November||56mm 2.2ins|
|Coldest month:||January||14°C 57.2°F|
|Wettest month:||August||193mm 7.6ins|