June Weather in Charleston

Last updated: March 2, 2024

The weather in Charleston, United States, during June is characterized by an average temperature of 26°C (78°F). Highs can soar to 34°C (94°F), while lows may dip to 16°C (60°F). Typically, the humidity level in Charleston throughout June hovers around 81%.

16°C (60°F)

Minimum temperature

26°C (78°F)

Average temperature

34°C (94°F)

Maximum temperature

81%

Humidity

Precipitation and Sunshine hours

In June, Charleston averages 109 mm (4.3 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 14 hours 29 minutes of daylight, with the sun shining for approximately 10 hours 57 minutes each day. Additionally, there is a 46% probability of sunny days during this period.

109 mm (4.3 inches)

Precipitation

9 rainy days

Rainy days

10 hours 57 minutes

Sunshine hours

46%

Chance of sun

UV Index

In June, the UV Index in Charleston reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	1	2	3	6	8	10	11	10	9	6	4	2	1
Exposure	Low		Moderate	High	VeryHigh		Extreme	VeryHigh		High	Moderate	Low
Time to burn	45 min		30 min	25 min	15 min		10 min	15 min		25 min	30 min	45 min