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April Weather in Charleston, United States

Last updated: June 24, 2025

In Charleston, United States, the average temperature for April hovers around 16°C (61°F). Expect a minimum of -1°C (30°F) and a maximum of 32°C (91°F). During this month, you can anticipate a total precipitation of 161 mm (6.3 in) over roughly 10 days, contributing to an average humidity of 78%.

April Temperature in Charleston

In April in Charleston, the average temperature is 16°C (61°F). Maximums can reach 32°C (91°F), while minimums can drop as low as -1°C (30°F). This variation in temperature makes it essential for travelers to pack accordingly to enjoy their visit comfortably.

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 16°C (61°F), with highs reaching up to 32°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec414555607078828076635146
Data source: Temperature data for Charleston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Charleston

In Charleston in April, the total precipitation amount is 161 mm (6.3 in) over a span of 10 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 161 mm (6.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8011613116119710987125591137690
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Charleston

In Charleston in April, humidity is 78%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as it clings to your skin and creates a heavy atmosphere that can drain your energy.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
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.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)80 mm (3.1 inches)82%moderate
February Weather7°C (45°F)116 mm (4.6 inches)79%high
March Weather13°C (55°F)131 mm (5.1 inches)77%very high
April Weather16°C (61°F)161 mm (6.3 inches)78%very high
May Weather21°C (70°F)197 mm (7.8 inches)82%extreme
June Weather26°C (78°F)109 mm (4.3 inches)81%extreme
July Weather28°C (82°F)87 mm (3.4 inches)75%extreme
August Weather27°C (80°F)125 mm (4.9 inches)61%very high
September Weather25°C (76°F)59 mm (2.3 inches)59%very high
October Weather17°C (64°F)113 mm (4.5 inches)69%high
November Weather10°C (51°F)76 mm (3.0 inches)82%moderate
December Weather8°C (47°F)90 mm (3.5 inches)87%moderate

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