October weather forecast
Charleston, SC

Trees along both sides of a street in Charleston, South Carolina
Trees along both sides of a street in Charleston, South Carolina

Weather in October

October, like September, in Charleston, South Carolina, is a moderately hot autumn month, with an average temperature ranging between max 75.9°F (24.4°C) and min 64°F (17.8°C).

Temperature

In Charleston, the average high-temperature in October slightly decreases from a warm 83.5°F (28.6°C) in September to a still moderately hot 75.9°F (24.4°C). In October, the average low-temperature is 64°F (17.8°C).

Humidity

In October, the average relative humidity in Charleston, South Carolina, is 74%.

Rainfall

In October, the rain falls for 10.6 days. Throughout October, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 178.9 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall.

Ocean temperature

In Charleston, the average seawater temperature in October is 77.9°F (25.5°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in October is 11h and 22min.
On the first day of the month, sunrise is at 7:13 am and sunset at 7:04 pm. On the last day of October, sunrise is at 7:36 am and sunset at 6:29 pm EDT.

Sunshine

In October, the average sunshine is 6.7h.

UV index

In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in October transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the average humidity in October in Charleston?

In Charleston, the average relative humidity in October is 74%.

How many days does it rain in October in Charleston?

In Charleston, South Carolina, in October, it is raining for 10.6 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Charleston?

February through November are months without snowfall in Charleston.

What is the ocean temperature in October in Charleston?

In October, the average ocean temperature in Charleston, South Carolina, is 77.9°F (25.5°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Charleston have in October?

In October, the average day length is 11h and 22min.

When is the sunrise / sunset in October in Charleston?

On the first day of October in Charleston, South Carolina, sunrise is at 7:13 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:29 pm EDT.

How long on average sun shines in October in Charleston?

In October, the average sunshine duration in Charleston is 6.7h.

What is the UV index intensity in October in Charleston?

In October, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Charleston, SC

Average temperature in October - Charleston, SC
  • Average high temperature in October: 75.9°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in October: 64°F

The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).

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Average pressure in October
Charleston, SC

Average pressure in October - Charleston, SC
  • Average pressure in October: 30.02"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).

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Average wind speed in October
Charleston, SC

Average wind speed in October - Charleston, SC
  • Average wind speed in October: 8.6mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).

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Average humidity in October
Charleston, SC

Average humidity in October - Charleston, SC
  • Average humidity in October: 74%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).

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Average rainfall in October
Charleston, SC

Average rainfall in October - Charleston, SC
  • Average rainfall in October: 3.11"

The wettest month (with the highest rainfall) is August (7.13").
The driest month (with the least rainfall) is January (1.42").

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Average rainfall days in October
Charleston, SC

Average rainfall days in October - Charleston, SC
  • Average rainfall days in October: 10.6 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in October
Charleston, SC

Average snowfall in October - Charleston, SC
  • Average snowfall in October: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in October
Charleston, SC

Average snowfall days in October - Charleston, SC
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in October
Charleston, SC

Average sea temperature in October - Charleston, SC
  • Average sea temperature in October: 77.9°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (61.9°F).

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Average daylight in October /
Average sunshine in October
Charleston, SC

Average daylight in October / Average sunshine in October - Charleston, SC
  • Average daylight in October: 11h and 22min

The month with the longest days is June (Average daylight: 14h and 17min).
The month with the shortest days is December (Average daylight: 10h and 2min).

  • Average sunshine in October: 6h and 42min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in October
Charleston, SC

Average sunshine days in October - Charleston, SC
  • Average sunshine days in October: 18.9 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (3.8 days).

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Average UV index in October
Charleston, SC

Average UV index in October - Charleston, SC
  • Average UV index in October: 5

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).

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Average cloud cover in October
Charleston, SC

Average cloud cover in October - Charleston, SC
  • Average cloud cover in October: 27

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in October
Charleston, SC

Average visibility in October - Charleston, SC
  • Average visibility in October: 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).

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