April 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 April

April is a pleasant spring month in Hilton Head Island, South Carolina, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 61.3°F (16.3°C).

Temperature

In Hilton Head Island, the average high-temperature in April slightly increases from an enjoyable 65.8°F (18.8°C) in March to a pleasant 72.9°F (22.7°C). In April, in Hilton Head Island, South Carolina, the average low-temperature is 61.3°F (16.3°C).

Humidity

In Hilton Head Island, South Carolina, the average relative humidity in April is 74%.

Rainfall

In Hilton Head Island, in April, it is raining for 11.5 days, with typically 2.13" (54mm) of accumulated precipitation. In Hilton Head Island, during the entire year, the rain falls for 175.3 days and collects up to 32.28" (820mm) of precipitation.

Snowfall

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

Ocean temperature

In April, the average ocean temperature is 65.5°F (18.6°C).
Note: For most, swimming in 65.5°F (18.6°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In Hilton Head Island, the average length of the day in April is 12h and 59min.
On the first day of April, sunrise is at 7:11 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:02 pm EDT.

Sunshine

In April, the average sunshine in Hilton Head Island is 9.9h.

UV index

In Hilton Head Island, the average daily maximum UV index in April is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in April interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in April in Hilton Head Island?

In April, the average high-temperature is 72.9°F (22.7°C), and the average low-temperature is 61.3°F (16.3°C).

What is the average humidity in April in Hilton Head Island?

In Hilton Head Island, the average relative humidity in April is 74%.

How many days does it rain in April in Hilton Head Island?

In Hilton Head Island, during April, the rain falls for 11.5 days and regularly aggregates up to 2.13" (54mm) of precipitation.

When it does not snow in Hilton Head Island?

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

What is the ocean temperature in April in Hilton Head Island?

In April, the average ocean temperature in Hilton Head Island is 65.5°F (18.6°C). Swimming in 65.5°F (18.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Hilton Head Island have in April?

In Hilton Head Island, the average day length in April is 12h and 59min.

What time are sunrise and sunset in April in Hilton Head Island?

On the first day of April in Hilton Head Island, South Carolina, sunrise is at 7:11 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:02 pm EDT.

How many hours of sunshine does Hilton Head Island have in April?

The average sunshine duration in April in Hilton Head Island, South Carolina, is 9.9h.

How high is the UV index in April in Hilton Head Island?

The average daily maximum UV index in April is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hilton Head Island, SC

Average temperature in April - Hilton Head Island, SC
  • Average high temperature in April: 72.9°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 April: 61.3°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 in April
Hilton Head Island, SC

Average pressure in April - Hilton Head Island, SC
  • Average pressure in April: 30.03"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).

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Average wind speed in April
Hilton Head Island, SC

Average wind speed in April - Hilton Head Island, SC
  • Average wind speed in April: 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).

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Average humidity in April
Hilton Head Island, SC

Average humidity in April - Hilton Head Island, SC
  • Average humidity in April: 74%

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 in April
Hilton Head Island, SC

Average rainfall in April - Hilton Head Island, SC
  • Average rainfall in April: 2.13"

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 in April
Hilton Head Island, SC

Average rainfall days in April - Hilton Head Island, SC
  • Average rainfall days in April: 11.5 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).

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Average snowfall in April
Hilton Head Island, SC

Average snowfall in April - Hilton Head Island, SC
  • Average snowfall in April: 0"

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 in April
Hilton Head Island, SC

Average snowfall days in April - Hilton Head Island, SC
  • Average snowfall days in April: 0 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).

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Average sea temperature in April
Hilton Head Island, SC

Average sea temperature in April - Hilton Head Island, SC
  • Average sea temperature in April: 65.4°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).

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Average daylight in April /
Average sunshine in April
Hilton Head Island, SC

Average daylight in April / Average sunshine in April - Hilton Head Island, SC
  • Average daylight in April: 12h and 59min

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).

  • Average sunshine in April: 9h and 54min

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 in April
Hilton Head Island, SC

Average sunshine days in April - Hilton Head Island, SC
  • Average sunshine days in April: 16.8 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).

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Average UV index in April
Hilton Head Island, SC

Average UV index in April - Hilton Head Island, SC
  • Average UV index in April: 6

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 in April
Hilton Head Island, SC

Average cloud cover in April - Hilton Head Island, SC
  • Average cloud cover in April: 26

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 in April
Hilton Head Island, SC

Average visibility in April - Hilton Head Island, SC
  • Average visibility in April: 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).

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