April weather forecastCharleston, SC
April
Weather in April
By the time April makes an appearance, Charleston is firmly entrenched in spring. Warmer days, modest wind speeds, and reasonably clear skies define the month’s temperament. In terms of precipitation, April sets itself apart with the highest rainfall of 2.83" (72mm) amidst 12.8 days of rain. This is complemented by a comfortable relative humidity of 74% which makes this month suitable for various outdoor activities.Temperature
With the start of April in Charleston, the average high-temperature marginally shifts from March's comfortable 65.1°F (18.4°C) to a pleasant 72.7°F (22.6°C). Throughout April, Charleston experiences a low-temperature average of 60.4°F (15.8°C).Humidity
In Charleston, the average relative humidity in April is 74%.Rainfall
In Charleston, in April, during 12.8 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, there are 178.9 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.Snowfall
In Charleston, snow does not fall in February through November.Ocean temperature
In April, the average ocean temperature is 67.5°F (19.7°C).Note: In water of 67.5°F (19.7°C), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Charleston, the average length of the day in April is 13h and 1min.On the first day of April in Charleston, sunrise is at 7:06 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:01 pm EDT.
Sunshine
In April, the average sunshine in Charleston is 9.8h.UV index
In April, the average daily maximum UV index in Charleston is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 6 during April, leads to the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Charleston, SC
- Average high temperature in April: 72.7°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in April: 60.4°F
The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).
Average pressure in April
Charleston, SC
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in April
Charleston, SC
- Average wind speed in April: 9.4mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in April
Charleston, SC
- Average humidity in April: 74%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in April
Charleston, SC
- Average rainfall in April: 2.83"
The wettest month (with the highest rainfall) is August (7.13").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in April
Charleston, SC
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in April
Charleston, SC
- Average snowfall in April: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in April
Charleston, SC
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in April
Charleston, SC
- Average sea temperature in April: 67.4°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 (61.9°F).
Average daylight in April /
Average sunshine in April
Charleston, SC
- Average daylight in April: 13h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in April: 9h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in April
Charleston, SC
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (3.8 days).
Average UV index in April
Charleston, 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
Charleston, SC
- Average cloud cover in April: 28
The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in April
Charleston, 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).
