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April Weather in Charleston, United States

Last updated: June 24, 2025

In Charleston, United States during April, the average temperature hovers around 12°C (53°F), with a minimum of -6°C (22°F) and a maximum reaching 29°C (84°F). Expect about 117 mm (4.6 in) of precipitation spread over 10 days, contributing to the region's average humidity of 83%. Stay prepared for varied weather while enjoying the unique charms of the season!

April Temperature in Charleston

In April in Charleston, the average temperature is 12°C (53°F), with maxima reaching up to 29°C (84°F) and minima dipping as low as -6°C (22°F). This diverse temperature range means travelers should be prepared for both warm and chilly conditions during their trip.

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 12°C (53°F), with highs reaching up to 29°C (84°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec303344536675787471584237
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 117 mm (4.6 in) recorded 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 117 mm (4.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7879125117135110116123671158965
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 83%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and necessitating layers to stay comfortable while traveling.

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 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
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 Weather-1°C (30°F)78 mm (3.1 inches)84%moderate
February Weather1°C (33°F)79 mm (3.1 inches)82%moderate
March Weather7°C (44°F)125 mm (4.9 inches)84%high
April Weather12°C (53°F)117 mm (4.6 inches)83%very high
May Weather19°C (66°F)135 mm (5.3 inches)80%very high
June Weather24°C (76°F)110 mm (4.3 inches)83%extreme
July Weather25°C (78°F)116 mm (4.6 inches)82%very high
August Weather24°C (75°F)123 mm (4.8 inches)82%very high
September Weather21°C (71°F)67 mm (2.6 inches)79%very high
October Weather14°C (58°F)115 mm (4.5 inches)79%high
November Weather6°C (42°F)89 mm (3.5 inches)88%moderate
December Weather3°C (37°F)65 mm (2.6 inches)87%moderate

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