April weather forecast
Charleston International Airport, SC

With the onset of April, Charleston's weather begins to transform into warmer and milder conditions. Notably, the temperature elevates from chilly lows of 41°F (5°C) to a more comfortable range, hitting monthly highs of 66°F (18.9°C). Continuing the trend from March, the daylight hours progressively lengthen. The weather conditions during the day are relatively warm, complemented by ample sunshine. An increase in the UV index denotes a higher exposure to the sun, necessitating the application of sun protection.

Temperature

April brings a temperature change, with average high-temperatures moving from March's moderate 57.2°F (14°C) to a comfortable 66.2°F (19°C). Charleston International Airport logs a substantial downturn to a cold 41°F (5°C) during April nights, a considerable shift from daytime highs.

Rainfall

In Charleston International Airport, South Carolina, in April, it is raining for 14 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, in Charleston International Airport, South Carolina, there are 151 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.

Daylight

In April, the average length of the day is 13h and 1min.
On the first day of April, 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 Charleston International Airport, the average sunshine in April is 7h.

UV index

The average daily maximum UV index in April in Charleston International Airport is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.