Cool
Average highs are around 16°C, so pack for cooler days.
December verdict
Hilton Head, South Carolina, United States in December
Weather score30Poor
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 5.5h per day, enough for a balanced month. Rainfall averages 75mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
16°C
Rain
75mm
Sun
5.5h
Sea
16°C
Weather score
30
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 75mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Hilton Head, South Carolina, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December16°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
December75mm average rain
December sits on the drier side of Hilton Head's year, which helps with sightseeing and transfers.
Driest monthsJanuary to February, April to May, and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December5.5 hours average sun
December is one of Hilton Head's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December16°C average sea
December is below Hilton Head's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJune to September
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
December30 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsMay to October
These months have the strongest weather score in the monthly averages.
