June weather forecast
North Charleston, SC

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Weather in June

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

North Charleston's transition into June sees a mild rise in the average high-temperature, edging from a moderately hot 80.8°F (27.1°C) in May to a hot 87.1°F (30.6°C). North Charleston observes an average nighttime temperature of 73.4°F (23°C) during June.

Heat index

June's heat index is estimated at a fiery hot 100.4°F (38°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In North Charleston, the average relative humidity in June 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

March through November are months without snowfall.

Daylight

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

Sunshine

In June, the average sunshine is 10.8h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 7 in June translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

How hot is June?

North Charleston in June has an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 73.4°F (23°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in June is estimated at 100.4°F (38°C).

What is the average humidity in June?

In June, the average relative humidity is 75%.

How much does it rain in June?

In North Charleston, during June, the rain falls for 17.3 days and regularly aggregates up to 2.6" (66mm) of precipitation.

When it does not snow?

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

When are the longest days?

The month with the longest days is June, with an average of 14h and 18min of daylight.

What is the average length of the day in June in North Charleston?

In North Charleston, South Carolina, the average day length in June is 14h and 17min.

When is the sunrise / sunset in June?

In June, on the first day of the month, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of the month, in North Charleston, South Carolina, sunrise is at 6:15 am and sunset at 8:32 pm EDT.

How many hours of sunshine does North Charleston have in June?

In June, the average sunshine duration is 10.8h.

When is the highest UV index in North Charleston?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in June?

In June, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
North Charleston, SC

Average temperature in June - North Charleston, SC
  • Average high temperature in June: 87.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in June: 73.4°F

The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

Average pressure in June
North Charleston, SC

Average pressure in June - North Charleston, SC
  • Average pressure in June: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in June
North Charleston, SC

Average wind speed in June - North Charleston, SC
  • Average wind speed in June: 7mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in June
North Charleston, SC

Average humidity in June - North Charleston, SC
  • Average humidity in June: 75%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).

Average rainfall in June
North Charleston, SC

Average rainfall in June - North Charleston, SC
  • Average rainfall in June: 2.6"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in June
North Charleston, SC

Average rainfall days in June - North Charleston, SC
  • Average rainfall days in June: 17.3 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).

Average snowfall days in June
North Charleston, SC

Average snowfall days in June - North Charleston, SC
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in June /
Average sunshine in June
North Charleston, SC

Average daylight in June / Average sunshine in June - North Charleston, SC
  • Average daylight in June: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in June: 10h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in June
North Charleston, SC

Average sunshine days in June - North Charleston, SC
  • Average sunshine days in June: 9.7 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).

Average UV index in June
North Charleston, SC

Average UV index in June - North Charleston, SC
  • Average UV index in June: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in June
North Charleston, SC

Average cloud cover in June - North Charleston, SC
  • Average cloud cover in June: 26

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).

Average visibility in June
North Charleston, SC

Average visibility in June - North Charleston, SC
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

North Charleston, South Carolina, USA

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