October weather forecastCharleston, SC
October
Weather in October
October sees Charleston embracing the autumn season in all its glory. Residents and tourists both enjoy the cooler temperatures and decreased rainfall. Though sunny days become more precious, October is favored for outdoor festivals and fall foliage viewing owing to the comfortable weather. On the rainfall front, a progressive decrease to 3.11" (79mm) shows the city’s march towards drier months.Temperature
October in Charleston signals a slight drop in average high-temperature, sliding from September's 83.5°F (28.6°C) to a still moderately hot 75.9°F (24.4°C). Throughout October, Charleston witnesses a nighttime temperature average of 64°F (17.8°C).Humidity
The average relative humidity in October is 74%.Rainfall
In October, the rain falls for 10.6 days. Throughout October, 3.11" (79mm) of precipitation is accumulated. In Charleston, during the entire year, the rain falls for 178.9 days and collects up to 41.93" (1065mm) of precipitation.Snowfall
February through November are months without snowfall in Charleston, South Carolina.Ocean temperature
In Charleston, the average seawater temperature in October is 77.9°F (25.5°C).Note: Water activities including swimming and diving at temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.
Daylight
In October, the average length of the day is 11h and 22min.On the first day of the month, sunrise is at 7:14 am and sunset at 7:03 pm. On the last day of October, sunrise is at 7:37 am and sunset at 6:29 pm EDT.
Sunshine
In October, the average sunshine in Charleston is 6.7h.UV index
The average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In October, the UV index of 5 transforms into the following advice:
Undertake protective steps - Preventing sun damage is advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
Average daylight in October /
Average sunshine in October
Charleston, SC
- Average daylight in October: 11h and 24min
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 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).
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).
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).
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).
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).
