The best times to visit Charleston for ideal weather are

August 13th to October 14th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

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Weather in Charleston

Temperature

Average temperatures in Charleston vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 23rd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Charleston, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 87.9°F (31.1°C) with temperatures rarely dropping below 64.8°F (18.2°C) at night.

Charleston Temperatures (Fahrenheit)

Key
High
Average
Low

Charleston Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Charleston Perceived Temperature (F)

Key
High
Average
Low

Charleston Perceived Temperature (C)

Key
High
Average
Low

 

Average Charleston Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 45.3 33.4 24
Feb 46.5 34.7 24.7
Mar 60.5 46.7 34.9
Apr 72.5 57.6 43.4
May 79.7 65.6 52.7
Jun 86.2 72.8 61.3
Jul 87.5 74.5 63.7
Aug 86.9 73.6 62.8
Sep 82.2 67.8 56.6
Oct 70.8 56.2 44.5
Nov 60.3 46.2 34.4
Dec 50.7 39.7 30.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 7.4 0.8 -4.4
Feb 8.1 1.5 -4.1
Mar 15.8 8.2 1.6
Apr 22.5 14.2 6.3
May 26.5 18.7 11.5
Jun 30.1 22.7 16.3
Jul 30.8 23.6 17.6
Aug 30.5 23.1 17.1
Sep 27.9 19.9 13.7
Oct 21.6 13.4 6.9
Nov 15.7 7.9 1.3
Dec 10.4 4.3 -0.8


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Charleston are September, August, and then November. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late September. For example, on the week of September 17th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 3 days of significant precipitation the week of July 9th.

When can you find snow in Charleston? Weather stations report large amounts of snow likely to be deepest around October, especially close to mid December. The best time to ski (if at all) in Charleston is often around around December 17th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chanceof Precipitation

The graph below shows the % chance of rainy and snowy days in Charleston.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Charleston (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 27% 2.2 3.2
Feb 25% 2.5 2.8
Mar 29% 2.1 4.3
Apr 27% 1.2 3.8
May 28% 0 4.7
Jun 29% 0 4.6
Jul 33% 0 6.3
Aug 20% 0 3.2
Sep 18% 0 3.2
Oct 23% 4.2 3.2
Nov 21% 1.6 2.6
Dec 31% 2.8 4.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 27 5.6 8.1
Feb 25 6.4 7.1
Mar 29 5.3 10.9
Apr 27 3 9.7
May 28 0 11.9
Jun 29 0 11.7
Jul 33 0 16
Aug 20 0 8.1
Sep 18 0 8.1
Oct 23 10.7 8.1
Nov 21 4.1 6.6
Dec 31 7.1 12.4

 

Humidity and Wind

Charleston has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is April (43.7% relative humidity), and the most humid month is August (67.2%).

Wind in Charleston is usually extremely calm. The windiest month is April, followed by February and January. April’s average wind speed of around 5.4 knots (6.2 MPH or 9.9 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early April where average top sustained speeds reach 15.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Charleston.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 5.1 Light breeze 12 Significant breeze
Feb 5.3 Light breeze 12.8 Significant breeze
Mar 5 Light breeze 12.3 Significant breeze
Apr 5.4 Light breeze 13.5 Significant breeze
May 3.4 Barely noticeable 10.5 Significant breeze
Jun 3.5 Barely noticeable 11.1 Significant breeze
Jul 2.9 Barely noticeable 10 Significant breeze
Aug 2.4 Barely noticeable 8.6 Gentle breeze
Sep 2.5 Barely noticeable 8.4 Significant breeze
Oct 3.4 Barely noticeable 9.4 Gentle breeze
Nov 3.9 Barely noticeable 10.3 Significant breeze
Dec 4.4 Light breeze 11.2 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 57.8%
Feb 54.5%
Mar 50.1%
Apr 43.7%
May 59.7%
Jun 63.4%
Jul 66.9%
Aug 67.2%
Sep 66.5%
Oct 61.8%
Nov 52.9%
Dec 63.9%

 

Is it Safe to Travel to Charleston?

Our best data indicates this area is generally safe. As of Jan 19, 2018 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories


 

The Busiest and Least Crowded Months

The busiest month for tourism in Charleston, WV, US is October, followed by June and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Charleston in February. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 27.5 in February means 27.5% of the tourists vs. October.


Overall Charleston Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 85.5°F (29.7°C) and 49.4°F (9.7°C) with warmer temperatures in the later months. Rain is somewhat common with 8 to 9 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 6 to 10 days of precipitation per month. June – August is the second busiest season for tourism in Charleston, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 86.9°F (30.5°C) and 56.1°F (13.4°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 7 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Charleston to be enjoyable for warm weather travelers. The average high during this season is between 51.3°F (10.7°C) and 42.3°F (5.7°C). On average, it rains or snows a fair amount: 7 to 10 times per month. These times of year are the slowest with tourists.

 

Best Times to Travelthe United States › Charleston, WV, US

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