April weather forecastHilton Head Island, SC
April
Weather in April
April witnesses a significant jump in temperature, discarding any remnants of early year cold. Compared to March, the weather in this month has become substantially warmer and ideal for water-related activities. With increased daylight hours, the extended evenings beckon locals and tourists to bask in the beauty of Hilton Head Island's landscapes. The overall climatic conditions pave the way for a splendid spring month. Notably, the April temperature extremes reveal an inviting warm atmosphere with the mercury scaling between 72.9°F (22.7°C) to 61.3°F (16.3°C).Temperature
April in Hilton Head Island, South Carolina, signals a minor shift in the average high-temperature, moving from March's refreshing 65.8°F (18.8°C) to a pleasant 72.9°F (22.7°C). April nights in Hilton Head Island are marked by an average temperature drop to a comfortable 61.3°F (16.3°C).Humidity
In April, the average relative humidity in Hilton Head Island is 74%.Rainfall
In Hilton Head Island, in April, it is raining for 11.5 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 175.3 rainfall days, and 32.28" (820mm) of precipitation is accumulated.Snowfall
In Hilton Head Island, snow does not fall in February through December.Ocean temperature
In April, the average ocean temperature is 65.5°F (18.6°C).Note: Swimming in water at 65.5°F (18.6°C) is not a pleasing experience for the majority. As the temperature descends from 69.8°F (21°C) to 59°F (15°C), controlling breathing becomes increasingly hard.
Daylight
The average length of the day in April is 12h and 59min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:43 pm. On the last day of April, in Hilton Head Island, South Carolina, sunrise is at 6:36 am and sunset at 8:03 pm EDT.
Sunshine
In April, the average sunshine is 9.9h.UV index
The average daily maximum UV index in April in Hilton Head Island is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In April, the UV index of 6 transforms into the following advice:
Shield from overexposure. Defense against sun-related harm is required. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
Average daylight in April /
Average sunshine in April
Hilton Head Island, SC
- Average daylight in April: 13h and 0min
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 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).
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).
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).
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).
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).
