June Weather in Charleston, United States

Last updated: June 24, 2025

In June, the average temperature in Charleston, United States hovers around 22°C (72°F), with lows dipping to a cool 8°C (46°F) and highs soaring to a sizzling 34°C (93°F). Expect 154 mm (6.1 in) of precipitation over about 16 days, accompanied by a comfortable average humidity of 84%. Stay prepared for a mix of warm days and refreshing showers!

June Temperature in Charleston

In June in Charleston, the average temperature is 22°C (72°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 8°C (46°F). This makes Charleston an ideal destination for travelers looking to enjoy mild weather while exploring outdoor activities.

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

The chart illustrates June 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, June typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (46°F).

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

June Precipitation in Charleston

In Charleston in June, the precipitation amount is 154 mm (6.1 in) over a span of 16 days.

June Precipitation Trends in Charleston

The chart displays monthly precipitation patterns in Charleston, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Charleston, June typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Charleston

In Charleston in June humidity is 84%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel feel slightly stifling but also lending a vibrant energy to the atmosphere, which can be both invigorating and tiring as you explore.

June Average Humidity in Charleston

This chart illustrates the average monthly humidity levels in Charleston, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Charleston is approximately 84%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Charleston

In Charleston in June, 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 June

The chart shows the monthly maximum UV Index (UVI) for Charleston in June, 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 June, the maximum UV index in Charleston typically reaches 10, which falls under the very high exposure category.

Data source: Charleston June 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 June 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 June’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 June’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