Charleston weather in September 2025

Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Charleston in September. Check more long-term weather averages for Charleston in September before you book your next holiday to West Virginia in 2025/2026.

  • 26°C maximum daytime temperature in September in Charleston26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in September in Charleston10
    10 days with some rainfall
  • 13°C minimum night-time temperature in September in Charleston13
    13°C min night temperature
  • 12 hours of daylight per day in September in Charleston12
    12 hours of daylight per day
  • Low heat & humidity in September in CharlestonL
    Low heat & humidity
  • 87 mm monthly rainfall in September in Charleston87
    87 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Charleston7
    7 (High) UV index

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The September weather guide for West Virginia (Charleston) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

How hot is it in Charleston in September?

Daytime temperatures usually reach 26°C in Charleston in September with low heat and humidity, falling to 13°C at night.

How sunny is it in Charleston in September?

There are normally 7 hours of bright sunshine each day in Charleston in September - that's 56% of daylight hours.

Does it rain in Charleston in September?

There are usually 10 days with some rain in Charleston in September and the average monthly rainfall is 87mm.

What is the chance of a hurricane in Charleston in September?

On average less than 1 day in September in Charleston is likely to be affected by the passage of one or more tropical storms.

Charleston September sunrise & sunset times

Browse the sunrise and sunset times for Charleston in September 2025. Select a month to view Charleston sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:56 18:56
Monday, 15th September 2025 06:08 18:34
Tuesday, 30th September 2025 06:22 18:10

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