The best times to visit Summerville for ideal weather are

March 5th to May 27th

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



Other Summerville Travel Info

Weather in Summerville


Average temperatures in Summerville vary greatly. Considering humidity, temperatures feel nice some of the year, but often too hot in the summer and cold in the winter with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 25th 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 Summerville, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 93.4°F (34.1°C) with temperatures rarely dropping below 74°F (23.3°C) at night.

Summerville Temperatures (Fahrenheit)


Summerville Temperatures (Celsius)


“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.

Summerville Perceived Temperature (F)


Summerville Perceived Temperature (C)



Average Summerville 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 62.8 48.8 37
Feb 65.5 50.8 38
Mar 72.6 57.9 45.2
Apr 79.6 66 53.2
May 85.3 73 62
Jun 91.5 79.8 70.4
Jul 92 81.2 72.7
Aug 91.4 80.9 73.1
Sep 87.2 76.2 67.7
Oct 79.8 67.1 56
Nov 71.2 56.9 44.5
Dec 67.5 54 42.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 17.1 9.3 2.8
Feb 18.6 10.4 3.3
Mar 22.6 14.4 7.3
Apr 26.4 18.9 11.8
May 29.6 22.8 16.7
Jun 33.1 26.6 21.3
Jul 33.3 27.3 22.6
Aug 33 27.2 22.8
Sep 30.7 24.6 19.8
Oct 26.6 19.5 13.3
Nov 21.8 13.8 6.9
Dec 19.7 12.2 5.9



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Summerville are November, October, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early November. For example, on the week of November 5th 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 Summerville? Weather stations report a bit of annual snow likely to be deepest around February, especially close to early to mid February. The best time to ski (if at all) in Summerville is often around around February 12th 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.

Chance of Precipitation

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

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 18% 0 2.8
Feb 20% 3.1 3.7
Mar 17% 0 3.4
Apr 19% 0 3.2
May 17% 0 2.9
Jun 27% 0 6.5
Jul 31% 0 6.7
Aug 31% 0 8.1
Sep 22% 0 4.9
Oct 15% 0 5.2
Nov 13% 0 2.9
Dec 20% 0 3.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 18 0 7.1
Feb 20 7.9 9.4
Mar 17 0 8.6
Apr 19 0 8.1
May 17 0 7.4
Jun 27 0 16.5
Jul 31 0 17
Aug 31 0 20.6
Sep 22 0 12.4
Oct 15 0 13.2
Nov 13 0 7.4
Dec 20 0 9.1


Humidity and Wind

Summerville has some very humid months, with other comfortably humid months. The least humid month is February (55% relative humidity), and the most humid month is August (71.1%).

Wind in Summerville is usually calm. The windiest month is April, followed by March and May. April’s average wind speed of around 7.6 knots (8.7 MPH or 14 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late March where average top sustained speeds reach 15.1 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 6.6 Light breeze 13.1 Significant breeze
Feb 7 Gentle breeze 14.1 Significant breeze
Mar 7.4 Gentle breeze 14.7 Significant breeze
Apr 7.6 Gentle breeze 14.7 Significant breeze
May 7.2 Gentle breeze 13.9 Significant breeze
Jun 6.3 Light breeze 13.6 Significant breeze
Jul 6.1 Light breeze 13.9 Significant breeze
Aug 5.5 Light breeze 12.3 Significant breeze
Sep 5.8 Light breeze 12 Significant breeze
Oct 6 Light breeze 11.7 Significant breeze
Nov 6.3 Light breeze 12.1 Significant breeze
Dec 6.2 Light breeze 12.2 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 56.5%
Feb 55%
Mar 56%
Apr 57.6%
May 61.7%
Jun 65.2%
Jul 68.1%
Aug 71.1%
Sep 69.4%
Oct 65.1%
Nov 61.5%
Dec 64.1%


Is it Safe to Travel to Summerville?

Our best data indicates this area is generally safe. As of Oct 07, 2019 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. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Summerville, SC, US is July, followed by March and June. 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 Summerville in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

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 45.5 in November means 45.5% of the tourists vs. July.



Overall Summerville Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 87.9°F (31.1°C) and 66.9°F (19.4°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 6 days of significant precipitation per month. Spring is the second 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 the most precipitation with 8 to 10 days of precipitation per month. June – August is the busiest season for tourism in Summerville, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 89.7°F (32.1°C) and 68.9°F (20.5°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 4 to 7 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Summerville to be enjoyable for warm weather travelers. The average high during this season is between 67.9°F (19.9°C) and 62.4°F (16.9°C). On average, it rains or snows a fair amount: consistently 6 times per month. These times of year are fairly slow with tourists.


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