October weather forecast and climate
Charleston, SC

Trees along both sides of a street in Charleston, South Carolina, seen in the twilight light
Trees along both sides of a street in Charleston, South Carolina, seen in the twilight light

What is the temperature in October in Charleston?

The average high-temperature, in October, is 77.2°F (25.1°C), while the average low-temperature is 56.8°F (13.8°C).

How many days does it rain in October in Charleston?

In Charleston, in October, during 7.3 rainfall days, typically 3.8" (95.3mm) of precipitation is accumulated.
Average temperature in October - Charleston, SC
  • Average high temperature in October: 25.1°C

The warmest month (with the highest average high temperature) is July (32.8°C).
The month with the lowest average high temperature is January (15°C).

  • Average low temperature in October: 13.8°C

The month with the highest average low temperature is July (22.8°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).

Average humidity in October - Charleston, SC
  • Average humidity in October: 74.1%

The month with the highest relative humidity is August (78.9%).
The month with the lowest relative humidity is February (67.4%).

Average rainfall in October - Charleston, SC
  • Average rainfall in October: 95.3mm

The wettest month (with the highest rainfall) is August (181.6mm).
The driest month (with the lowest rainfall) is November (61.7mm).

Average rainfall days in October - Charleston, SC
  • Average rainfall days in October: 7.3 days

The month with the highest number of rainy days is August (13.2 days).
The month with the lowest number of rainy days is November (7 days).

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

The month with the highest snowfall is December (12.7mm).
Months with the lowest snowfall are January, March, April, May, June, July, August, September, October and November (0mm).

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

Months with the highest number of snowfall days are February and December (0.2 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in October - Charleston, SC
  • Average sea temperature in October: 25.5°C

The best month for swimming (with the highest average sea temperature) is August (28.6°C).
The coldest month (with the lowest average sea temperature) is February (16.7°C).

Average daylight in October / Average sunshine in October - Charleston, SC
  • Average daylight in October: 11.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in October: 7.2h

The month with most sunshine is May (Average sunshine: 9.5h).
The month with least sunshine is December (Average sunshine: 5.5h).

Average UV index in October - Charleston, SC
  • Average UV index in October: 6

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).

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