Summerville Weather in September

September in Summerville brings high temperatures around 30°C (86°F) during the day, dropping to 19°C (66°F) at night, with quite a bit of rainfall expected, averaging around 136 mm (5.4 in) for the month.

Rainfall in Summerville in September

Historically, the month has about 11 days of rain, averaging 136 mm (5.4 in) in total. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Summerville in September

Summerville in September gets highs of 30°C (86°F) during the day and drops to 19°C (66°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Summerville in September

The days are predominantly sunny, with an estimated total of around 221 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Should you favor a climate that's both dry and comfortably warm, March, April and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Summerville's climate page.

Summerville Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 37%  

Precipitation 136 mm (5.4 in)  

Rainy days 11 days  

Humidity 78% *  

Sunshine 221 hours *  

Percentage Sunshine 59% *  

* Data from: Charleston, the United States of America (33 KM, 20 Miles).

What to Wear in Summerville in September

Warm but pleasant conditions in Summerville in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Summerville in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Summerville's climate page.

More climate data for Summerville

Temperature Rainfall Sunshine Humidity

See the full Summerville climate overview or explore weather in the United States of America.