Hilton Head Island
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Hilton Head Island, SC

This tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina, mirror images in the calm seawater
This tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina, mirror images in the calm seawater
January, the same as December, in Hilton Head Island, South Carolina, is a moderate winter month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 57.4°F (14.1°C). The coldest month is January, with an average high-temperature of 57.4°F (14.1°C) and an average low-temperature of 46°F (7.8°C). Weather in January »

The last month of the winter, February, is another mild month in Hilton Head Island, South Carolina, with average temperature ranging between max 60.4°F (15.8°C) and min 48.9°F (9.4°C). In February, the average high-temperature is relatively the same as in January - a still moderate 60.4°F (15.8°C). Weather in February »

March, the first month of the spring, in Hilton Head Island, is a comfortable month, with average temperature varying between 65.8°F (18.8°C) and 54.1°F (12.3°C). In March, the average high-temperature slightly increases, from a moderate 60.4°F (15.8°C) in February, to a comfortable 65.8°F (18.8°C). Weather in March »

April is an agreeable spring month in Hilton Head Island, South Carolina, with average temperature varying between 72.9°F (22.7°C) and 61.3°F (16.3°C). In April, the average high-temperature slightly increases, from an enjoyable 65.8°F (18.8°C) in March, to a pleasant 72.9°F (22.7°C). Weather in April »

The last month of the spring, May, is a moderately hot month in Hilton Head Island, South Carolina, with temperature in the range of an average high of 79.2°F (26.2°C) and an average low of 68.9°F (20.5°C). In Hilton Head Island, the average high-temperature slightly increases, from a pleasant 72.9°F (22.7°C) in April, to a warm 79.2°F (26.2°C). Weather in May »

The first month of the summer, June, is still a warm month in Hilton Head Island, South Carolina, with average temperature varying between 75.6°F (24.2°C) and 85.6°F (29.8°C). In Hilton Head Island, the average high-temperature marginally rises, from a moderately hot 79.2°F (26.2°C) in May, to a still warm 85.6°F (29.8°C). Weather in June »

July in Hilton Head Island, South Carolina, is a hot summer month, with average temperature fluctuating between 77.9°F (25.5°C) and 87.6°F (30.9°C). With an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 77.9°F (25.5°C), July is the warmest month. In July, the average heat index is calculated to a torrid 102°F (38.9°C). Weather in July »

August, the last month of the summer, in Hilton Head Island, is another hot month, with temperature in the range of an average low of 77.5°F (25.3°C) and an average high of 87.1°F (30.6°C). In August, the average high-temperature is essentially the same as in July - a still tropical 87.1°F (30.6°C). Weather in August »

September, the first month of the autumn, in Hilton Head Island, is still a warm month, with average temperature varying between 83.3°F (28.5°C) and 74.1°F (23.4°C). In Hilton Head Island, the average high-temperature in September is almost the same as in August - a moderately hot 83.3°F (28.5°C). Weather in September »

October, like September, in Hilton Head Island, South Carolina, is another warm autumn month, with average temperature varying between 75.9°F (24.4°C) and 65.3°F (18.5°C). In Hilton Head Island, the average high-temperature marginally drops, from a warm 83.3°F (28.5°C) in September, to a still moderately hot 75.9°F (24.4°C). Weather in October »

The last month of the autumn, November, is also an enjoyable month in Hilton Head Island, South Carolina, with average temperature fluctuating between 66.4°F (19.1°C) and 55.2°F (12.9°C). In November, the average high-temperature drops, from a moderately hot 75.9°F (24.4°C) in October, to an enjoyable 66.4°F (19.1°C). Weather in November »

The first month of the winter, December, is still a comfortable month in Hilton Head Island, South Carolina, with average temperature varying between 61.5°F (16.4°C) and 50.9°F (10.5°C). In Hilton Head Island, the average high-temperature is almost the same as in November - a still comfortable 61.5°F (16.4°C). Weather in December »

What is the coldest month in Hilton Head Island?

January is the coldest month, with an average high-temperature of 57.4°F (14.1°C) and an average low-temperature of 46°F (7.8°C).

What is the least humid month in Hilton Head Island?

With an average relative humidity of 72%, January is the least humid month in Hilton Head Island.

How much does it rain in Hilton Head Island?

In Hilton Head Island, during the entire year, the rain falls for 175.3 days and collects up to 32.28" (820mm) of precipitation.

What is the driest month in Hilton Head Island?

January is the month with the least rainfall in Hilton Head Island. Rain falls for 8.3 days and accumulates 1.02" (26mm) of precipitation.

When does it snow in Hilton Head Island?

January is the only month when snow falls in Hilton Head Island, South Carolina.

How much does it snow in Hilton Head Island?

Throughout the year, in Hilton Head Island, South Carolina, there are 0.2 snowfall days, and 0.04" (1mm) of snow is accumulated.

What is the snowiest month in Hilton Head Island?

January is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.

What is the month with the lowest UV index in Hilton Head Island?

January is the month with the lowest UV index in Hilton Head Island, South Carolina, with an average maximum UV index of 3.

When it does not snow in Hilton Head Island?

February through December are months without snowfall in Hilton Head Island.

When is the ocean coldest in Hilton Head Island?

With an average ocean temperature of 57.6°F (14.2°C), February is the month with the coldest seawater in Hilton Head Island.

When is the highest UV index in Hilton Head Island?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Hilton Head Island.

When are the longest days in Hilton Head Island?

June has the longest days of the year in Hilton Head Island, with an average of 14.2h of daylight.

What is the month with the most sunshine in Hilton Head Island?

Months with the most sunshine in Hilton Head Island, South Carolina, are June and July, with an average of 11h of sunshine.

What is the warmest month in Hilton Head Island?

With an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 77.9°F (25.5°C), July is the warmest month.

What is the wettest month in Hilton Head Island?

The month with the most rainfall in Hilton Head Island is August when the rain falls for 25 days and typically aggregates up to 6.06" (154mm) of precipitation.

When is the ocean warmest in Hilton Head Island?

With an average ocean temperature of 83.5°F (28.6°C), August is the month with the warmest seawater.

What is the most humid month in Hilton Head Island?

December is the most humid month, with an average relative humidity of 77%.

What is the month with the shortest days in Hilton Head Island?

December has the shortest days of the year, with an average of 10.1h of daylight.

What is the month with the least sunshine in Hilton Head Island?

With an average of 5.7h of sunshine, December has the least sunshine of the year in Hilton Head Island.
Average temperature - Hilton Head Island, SC
Average humidity - Hilton Head Island, SC
Average rainfall - Hilton Head Island, SC

The wettest month (with the highest rainfall) is August (6.06").
The driest month (with the lowest rainfall) is January (1.02").

Average rainfall days - Hilton Head Island, SC

The month with the highest number of rainy days is August (25 days).
The month with the lowest number of rainy days is January (8.3 days).

Average snowfall - Hilton Head Island, SC

The month with the highest snowfall is January (0.04").
Months with the lowest snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days - Hilton Head Island, SC

Months with the highest number of snowfall days are January and February (0.1 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature - Hilton Head Island, SC

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 / Average sunshine - Hilton Head Island, SC

The month with the longest days is June (Average daylight: 14.2h).
The month with shortest days is December (Average daylight: 10.1h).

Months with most sunshine are June and July (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 5.7h).