Climate and monthly weather forecast
Hilton Head Island, SC

Tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina
Tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina

Weather in January

January, the same as December, in Hilton Head Island, South Carolina, is a moderate winter month, with temperature in the range of an average high of 57.4°F (14.1°C) and an average low of 46°F (7.8°C). 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). Weather in January »

Weather in February

February, the last month of the winter in Hilton Head Island, is another mild month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 60.4°F (15.8°C). In February, the average high-temperature is practically the same as in January - a still mild 60.4°F (15.8°C). Weather in February »

Weather in March

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

Weather in April

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

Weather in May

The last month of the spring, May, is a warm month in Hilton Head Island, South Carolina, with an average temperature varying between 79.2°F (26.2°C) and 68.9°F (20.5°C). In May, the average high-temperature marginally rises from an agreeable 72.9°F (22.7°C) in April to a warm 79.2°F (26.2°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Hilton Head Island, South Carolina, with an average temperature fluctuating between 75.6°F (24.2°C) and 85.6°F (29.8°C). In Hilton Head Island, the average high-temperature in June slightly increases 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 »

Weather in July

July in Hilton Head Island, South Carolina, is a tropical summer month, with temperature in the range of an average high of 87.6°F (30.9°C) and an average low of 77.9°F (25.5°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 estimated at a sweltering 102°F (38.9°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Hilton Head Island, South Carolina, with an average temperature varying between 77.5°F (25.3°C) and 87.1°F (30.6°C). In August, the average high-temperature is almost the same as in July - a still tropical 87.1°F (30.6°C). Weather in August »

Weather in September

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

Weather in October

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

Weather in November

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

Weather in December

The first month of the winter, December, is also an enjoyable month in Hilton Head Island, South Carolina, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 61.5°F (16.4°C). In Hilton Head Island, the average high-temperature in December is essentially the same as in November - a still enjoyable 61.5°F (16.4°C). Weather in December »
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FAQ

What is the coldest month in Hilton Head Island?

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).

What is the least humid month in Hilton Head Island?

The least humid month is January, with an average relative humidity of 72%.

What is the driest month in Hilton Head Island?

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

How many days 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.

When does it snow in Hilton Head Island?

The only month with snowfall is January.

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.

How many days does it snow in Hilton Head Island?

In Hilton Head Island, South Carolina, during the entire year, snow falls for 0.2 days and aggregates up to 0.04" (1mm) of snow.

When is the lowest UV index in Hilton Head Island?

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

When it does not snow in Hilton Head Island?

In Hilton Head Island, South Carolina, snow does not fall in February through December.

When is the ocean coldest in Hilton Head Island?

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

When is Daylight Saving Time (DST) in Hilton Head Island?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Hilton Head Island, South Carolina, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

When is the highest UV index in Hilton Head Island?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

When are the longest days in Hilton Head Island?

The month with the longest days is June, with an average of 14h and 14min of daylight.

What are the months with the most sunshine in Hilton Head Island?

The months with the most sunshine are June and July, with an average of 11h of sunshine.

What is the warmest month in Hilton Head Island?

July 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).

What is the wettest month in Hilton Head Island?

August is the month with the most rainfall in Hilton Head Island, South Carolina. Rain falls for 25 days and accumulates 6.06" (154mm) of precipitation.

What month is the ocean warmest in Hilton Head Island?

The month with the warmest seawater in Hilton Head Island is August, with an average ocean temperature of 83.5°F (28.6°C).

What is the most humid month in Hilton Head Island?

With an average relative humidity of 77%, December is the most humid month in Hilton Head Island, South Carolina.

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

The month with the shortest days in Hilton Head Island is December, with an average of 10h and 5min of daylight.

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

The month with the least sunshine in Hilton Head Island is December, with an average of 5.7h of sunshine.

Average temperature
Hilton Head Island, SC

Average temperature - Hilton Head Island, SC

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).

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).

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Average pressure
Hilton Head Island, SC

Average pressure - Hilton Head Island, SC

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).

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Average wind speed
Hilton Head Island, SC

Average wind speed - Hilton Head Island, SC

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).

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Average humidity
Hilton Head Island, SC

Average humidity - Hilton Head Island, SC

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is January (72%).

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Average rainfall
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 least rainfall) is January (1.02").

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Average rainfall days
Hilton Head Island, SC

Average rainfall days - Hilton Head Island, SC

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).

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Average snowfall
Hilton Head Island, SC

Average snowfall - Hilton Head Island, SC

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").

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Average snowfall days
Hilton Head Island, SC

Average snowfall days - Hilton Head Island, SC

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).

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Average sea temperature
Hilton Head Island, SC

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).

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Average daylight / Average sunshine
Hilton Head Island, SC

Average daylight / Average sunshine - Hilton Head Island, SC

The month with the longest days is June (Average daylight: 14h and 14min).
The month with the shortest days is December (Average daylight: 10h 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).

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Average sunshine days
Hilton Head Island, SC

Average sunshine days - Hilton Head Island, SC

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.8 days).

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Average UV index
Hilton Head Island, SC

Average UV index - Hilton Head Island, SC

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).

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Average cloud cover
Hilton Head Island, SC

Average cloud cover - Hilton Head Island, SC

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).

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Average visibility
Hilton Head Island, SC

Average visibility - Hilton Head Island, SC

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).

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