Charleston weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Charleston in August. Check more long-term weather averages for Charleston in August before you book your next holiday to West Virginia in 2025/2026.

  • 29°C maximum daytime temperature in August in Charleston29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in August in Charleston11
    11 days with some rainfall
  • 17°C minimum night-time temperature in August in Charleston17
    17°C min night temperature
  • 14 hours of daylight per day in August in Charleston14
    14 hours of daylight per day
  • Moderate heat & humidity in August in CharlestonM
    Moderate heat & humidity
  • 102 mm monthly rainfall in August in Charleston102
    102 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Charleston9
    9 (Very High) UV index

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The August 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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How hot is it in Charleston in August?

Daytime temperatures usually reach 29°C in Charleston in August with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Charleston in August?

There are normally 8 hours of bright sunshine each day in Charleston in August - that's 57% of daylight hours.

Does it rain in Charleston in August?

There are usually 11 days with some rain in Charleston in August and the average monthly rainfall is 102mm.

Charleston August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:29 19:36
Saturday, 16th August 2025 05:42 19:19
Sunday, 31st August 2025 05:56 18:57

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