April weather forecast and climate
Charleston International Airport, SC

April is a comfortable spring month in Charleston International Airport, South Carolina, with average temperature varying between 66.2°F (19°C) and 41°F (5°C).

Temperature

In Charleston International Airport, in April, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 41°F (5°C).

Rainfall

In April, the rain falls for 14 days. Throughout April, 3.4" (86mm) of precipitation is accumulated. In Charleston International Airport, during the entire year, the rain falls for 151 days and collects up to 41.9" (1065mm) of precipitation.

Daylight

The average length of the day in April is 13h.

Sunshine

In April, the average sunshine is 7h.

UV index

In April, the average daily maximum UV index in Charleston International Airport is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
The daily maximum UV index of 7 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in April in Charleston International Airport?

The average high-temperature, in April, in Charleston International Airport, South Carolina, is 66.2°F (19°C), while the average low-temperature is 41°F (5°C).

How many days does it rain in April in Charleston International Airport?

In April, in Charleston International Airport, South Carolina, the rain falls for 14 days. Throughout April, 3.4" (86mm) of precipitation is accumulated.

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

In Charleston International Airport, South Carolina, the average length of the day in April is 13h.

How long on average sun shines in April in Charleston International Airport?

The average sunshine in April in Charleston International Airport, South Carolina, is 7h.

What is the UV index reading in April in Charleston International Airport?

The average daily maximum UV index in April in Charleston International Airport, South Carolina, is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in April - Charleston International Airport, SC
  • Average high temperature in April: 66°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in April: 41°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23°F).

Average rainfall in April - Charleston International Airport, SC
  • Average rainfall in April: 3.4"

The wettest month (with the highest rainfall) is July (4.8").
The driest month (with the lowest rainfall) is October (2.8").

Average rainfall days in April - Charleston International Airport, SC
  • Average rainfall days in April: 14 days

The month with the highest number of rainy days is January (15 days).
Months with the lowest number of rainy days are September and October (10 days).

Average daylight in April / Average sunshine in April - Charleston International Airport, SC
  • Average daylight in April: 13h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in April: 7h

Months with most sunshine are May, June, July and August (Average sunshine: 8h).
The month with least sunshine is December (Average sunshine: 3h).

Average UV index in April - Charleston International Airport, SC
  • Average UV index in April: 7

Months with the highest UV index are June, July and August (UV index 9).
Months with the lowest UV index are January and December (UV index 2).

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