June weather forecast
North Charleston, SC

June brings the true onset of summer to North Charleston, South Carolina, with its warm and humid weather. The average temperature values hit their stride with the highest at 87.1°F (30.6°C) and the lowest at 73.4°F (23°C). June’s weather, although warmer than May, is still comparatively mild than the intense heat of July. Despite the heat, June holds the promise of long sun-filled days and increased daylight hours. Be prepared for the highest UV index of the year, and don’t leave home without sunscreen.

Temperature

Entering June, North Charleston notices a subtle temperature elevation, with the average high-temperature advancing from May's warm 80.8°F (27.1°C) to a hot 87.1°F (30.6°C). North Charleston throughout June, records an average low-temperature of 73.4°F (23°C).

Heat index

In June, the average heat index is computed to be a torrid 100.4°F (38°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In June, the average relative humidity is 75%.

Rainfall

In North Charleston, in June, it is raining for 17.3 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, there are 154.4 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

In North Charleston, snow does not fall in March through November.

Daylight

The month with the longest days is June, with an average of 14h and 18min of daylight.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of June, in North Charleston, South Carolina, sunrise is at 6:15 am and sunset at 8:32 pm EDT.

Sunshine

In June, the average sunshine in North Charleston is 10.8h.

UV index

The months with the highest UV index in North Charleston, South Carolina, are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in June translates into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.