The weather in Aiken in September is hot. The average temperatures are between 20°C and 29°C.
You can expect rain for roughly half of the month of September in Aiken. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Aiken in September 2025.
If you’re planning to visit Aiken in the near future, we highly recommend that you review the 14 day weather forecast for Aiken before you arrive.
Temperatures
29° / 20°
Rainy Days
8
Snowy Days
0
Dry Days
22
Rainfall
89
mm
Sun Hours
7.3
Hrs
