April Weather in Charleston, United States

Last updated: June 24, 2025

In Charleston, United States, the average temperature in April hovers around 13°C (56°F). During this time, temperatures can dip as low as -4°C (26°F) or rise to a warm 31°C (88°F). The region experiences a notable precipitation amount of 134 mm (5.3 in) over the course of 14 days, accompanied by an average humidity level of 86%. Be prepared for a mix of weather!

April Temperature in Charleston

In April in Charleston, the average temperature is 13°C (56°F). The maximum can reach 31°C (88°F), and the minimum can be as low as -4°C (26°F). Overall, this weather offers a diverse range of temperatures, making it important for travelers to pack accordingly for both warm and chilly conditions.

April Weather in Charleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Charleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Charleston, April typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (26°F).

Data source: Temperature data for Charleston generated using information from the Copernicus Climate Change Service.

April Precipitation in Charleston

In Charleston in April, the total precipitation amount is 134 mm (5.3 in) over the course of 14 days.

April Precipitation Trends in Charleston

The chart displays monthly precipitation patterns in Charleston, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Charleston, April typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Charleston

In Charleston in April, humidity is 86%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or air-conditioned spaces frequently.

April Average Humidity in Charleston

This chart illustrates the average monthly humidity levels in Charleston, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Charleston is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Charleston

In Charleston in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Charleston.

Maximum UV Index Levels in Charleston for April

The chart shows the monthly maximum UV Index (UVI) for Charleston in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Charleston typically reaches 9, which falls under the very high exposure category.

Data source: Charleston April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How April Weather in Charleston Compares to Other Months

Weather in Charleston varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Charleston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Charleston, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	101 mm (4.0 inches)	88%	moderate
February Weather	5°C (42°F)	152 mm (6.0 inches)	88%	moderate
March Weather	9°C (48°F)	119 mm (4.7 inches)	88%	high
April Weather	13°C (56°F)	134 mm (5.3 inches)	86%	very high
May Weather	19°C (66°F)	159 mm (6.3 inches)	82%	very high
June Weather	22°C (72°F)	154 mm (6.1 inches)	84%	very high
July Weather	25°C (77°F)	124 mm (4.9 inches)	82%	very high
August Weather	23°C (74°F)	114 mm (4.5 inches)	73%	very high
September Weather	21°C (70°F)	103 mm (4.0 inches)	73%	very high
October Weather	16°C (61°F)	117 mm (4.6 inches)	81%	high
November Weather	8°C (46°F)	78 mm (3.1 inches)	89%	moderate
December Weather	5°C (41°F)	124 mm (4.9 inches)	86%	moderate