April weather forecast
Charleston, SC

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Trees along both sides of a street in Charleston, South Carolina
Trees along both sides of a street in Charleston, South Carolina

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.

Frequently asked questions

What is the temperature in April in Charleston?

During April, Charleston experiences an average high-temperature of 72.7°F (22.6°C) and a low-temperature of 60.4°F (15.8°C).

What is the average humidity in April in Charleston?

In April, the average relative humidity is 74%.

How much does it rain in Charleston in April?

In Charleston, during April, the rain falls for 12.8 days and regularly aggregates up to 2.83" (72mm) of precipitation.

When it does not snow in Charleston?

In Charleston, South Carolina, snow does not fall in February through November.

How cold is the water in April in Charleston?

In Charleston, South Carolina, in April, the average water temperature is 67.5°F (19.7°C). For most, swimming in 67.5°F (19.7°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).

What is the average length of the day in April in Charleston?

The average day length in April in Charleston is 13h and 1min.

What time are sunrise and sunset in April in Charleston?

In April, on the first day of the month, sunrise is at 7:06 am and sunset at 7:40 pm. On the last day of the month, in Charleston, sunrise is at 6:32 am and sunset at 8:01 pm EDT.

How many hours of sunshine does Charleston have in April?

The average sunshine duration in April in Charleston, South Carolina, is 9.8h.

How high is the UV index in April in Charleston?

In April, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Charleston, SC

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 5min

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 - 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 - 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 - 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 - 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).

Charleston, South Carolina, USA

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