Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In Hilton Head Island, South Carolina, the lowest average temperatures are observed in January, with a high of 57.4°F (14.1°C) and a low of 46°F (7.8°C).Humidity
The least humid month is January, with an average relative humidity of 72%.Rainfall
January is the month with the least rainfall. Rain falls for 8.3 days and accumulates 1.02" (26mm) of precipitation.Snowfall
January is the only month when snow falls. January is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.Ocean temperature
In Hilton Head Island, in January, the average water temperature is 57.9°F (14.4°C).Note: Dipping into 57.9°F (14.4°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
In January, the average length of the day is 10h and 19min.On the first day of the month, sunrise is at 7:23 am and sunset at 5:28 pm. On the last day of January, in Hilton Head Island, sunrise is at 7:17 am and sunset at 5:55 pm EST.
Sunshine
The average sunshine in January is 5.8h.UV index
With an average maximum UV index of 3, January is the month with the lowest UV index in Hilton Head Island. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in January translates into the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Hilton Head Island?
What are January temperatures in Hilton Head Island?
What is the least humid month in Hilton Head Island?
What is the average humidity in January in Hilton Head Island?
What is the driest month in Hilton Head Island?
How much does it rain in Hilton Head Island in January?
What is the snowiest month in Hilton Head Island?
When does it start to snow in Hilton Head Island?
How cold is the water in January in Hilton Head Island?
How many hours of daylight does Hilton Head Island have in January?
What time are sunrise and sunset in January in Hilton Head Island?
How many hours of sunshine does Hilton Head Island have in January?
When is the lowest UV index in Hilton Head Island?
What is the UV index reading in January in Hilton Head Island?
Average temperature in January
Hilton Head Island, SC
- Average high temperature in January: 57.4°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.4°F).
- Average low temperature in January: 46°F
The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in January
Hilton Head Island, SC
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in January
Hilton Head Island, SC
- Average wind speed in January: 9.6mph
The windiest months (with the highest average wind speed) are January, March and April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in January
Hilton Head Island, SC
- Average humidity in January: 72%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is January (72%).
Average rainfall in January
Hilton Head Island, SC
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is August (6.06").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in January
Hilton Head Island, SC
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in January
Hilton Head Island, SC
- Average snowfall in January: 0.04"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Hilton Head Island, SC
- Average snowfall days in January: 0.1 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in January
Hilton Head Island, SC
- Average sea temperature in January: 57.9°F
The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (57.5°F).
Average daylight in January /
Average sunshine in January
Hilton Head Island, SC
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in January: 5h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Hilton Head Island, SC
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.8 days).
Average UV index in January
Hilton Head Island, SC
- Average UV index in January: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in January
Hilton Head Island, SC
- Average cloud cover in January: 33
The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in January
Hilton Head Island, SC
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hilton Head Island, South Carolina, USA
Weather forecast for your location
2. Allow the app to use your location