Charleston in september: average Weather, Temperature and Climate
Weather in Charleston in september 2025
The weather in North Charleston in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 7
Weather at 6am
74°F
Clear/Sunny
43% of time
25%
17%
10%
Weather at 12pm
86°F
Clear/Sunny
41% of time
23%
21%
10%
Weather at 6pm
79°F
Clear/Sunny
44% of time
22%
18%
10%
Weather at 3am
74°F
42%
27%
19%
7%
Evolution of daily average temperature and precipitation in Charleston in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Charleston in september.
The climate of Charleston in september is good
In september in North Charleston, the climate is wet (with 5.7in of rainfall over 8 days). It should be noted an improvement from the previous month since in august it receives an average of 9.3in of precipitation over 16 days.
The climate comfortable there september. Temperatures are up to 86°F. On average, the recorded minimum temperature is 74°F. Thus, the mean temperature average in september in North Charleston is 81°F. Note that seasonal normals in contrast with those observed in North Charleston in september with a maximum record of 99°F in 2021 and a minimum record of 56°F in 2020. You can plan to have about 15 days with temperatures over 86°F, or 50 of time.
In september in North Charleston, the days on average last 12:21. Sunrise is at 06:04 and sets at 18:25.
With a good weather, this month is a good month to go in that area in United States.
Seasonal average climate and temperature of Charleston in september
Check below seasonal norms These datas are compiled from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 74°F | ||||
| Highest record temperature | 99°F (2021) | ||||
| Lowest record temperature | 56°F (2020) | ||||
| Number of days at +86°F | 15 day(s) (50%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 82°F | ||||
| Lowest sea temperature | 80°F | ||||
| Highest sea temperature | 84°F | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 74°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.7in | ||||
| Number of days with rainfall | 8 day(s) (26%) | ||||
| Record daily rainfall | 7.8in (2019) | ||||
| Other climate data | |||||
| Humidity | 84% | ||||
| Visibility | 9.54km | ||||
| Cloud cover | 31% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:04 | ||||
| Time of sunset | 18:25 | ||||
| Length of day | 12:21 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Charleston in september 2024:
76°F to 92°F
76°F to 90°F
74°F to 81°F
70°F to 81°F
72°F to 85°F
72°F to 76°F
70°F to 72°F
67°F to 70°F
68°F to 76°F
67°F to 85°F
70°F to 83°F
72°F to 77°F
76°F to 85°F
74°F to 81°F
72°F to 83°F
72°F to 74°F
68°F to 85°F
74°F to 86°F
76°F to 88°F
74°F to 86°F
72°F to 86°F
74°F to 90°F
76°F to 88°F
77°F to 92°F
79°F to 86°F
79°F to 85°F
81°F to 88°F
76°F to 86°F
77°F to 90°F
77°F to 88°F
Map: other cities in the United States (USA) in september
Cities near Charleston:
| Edisto Beach in september | good weather |
| Hilton Head Island in september | good weather |
| Tybee Island (Georgia) in september | good weather |
| Savannah in september | good weather |
| Myrtle Beach in september | good weather |
| South Carolina in september | good weather |
| Carolina Beach in september | good weather |
| North Carolina in september | good weather |
| Atlanta in september | good weather |
| Virginia in september | good weather |
| Nags Head in september | good weather |
| Lake Martin (Alabama) in september | good weather |
Click over cities on the map for information about the weather in september.
Charleston
perfect weather
good
tolerable
bad
very bad
Weather data for Charleston in september:
Weather data for Charleston for september are derived from an average of the weather forecast since 2009 in Charleston. There is a margin of error and these forecasts are to be considered as general information only. The weather in Charleston can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Charleston.