Williamsburg weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Williamsburg in September. Check more long-term weather averages for Williamsburg in September before you book your next holiday to Virginia in 2025/2026.

  • 27°C maximum daytime temperature in September in Williamsburg27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Williamsburg8
    8 days with some rainfall
  • 16°C minimum night-time temperature in September in Williamsburg16
    16°C min night temperature
  • 12 hours of daylight per day in September in Williamsburg12
    12 hours of daylight per day
  • Low heat & humidity in September in WilliamsburgL
    Low heat & humidity
  • 106 mm monthly rainfall in September in Williamsburg106
    106 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Williamsburg7
    7 (High) UV index

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The September weather guide for Virginia (Williamsburg) 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 Williamsburg in September?

Daytime temperatures usually reach 27°C in Williamsburg in September with low heat and humidity, falling to 16°C at night.

How sunny is it in Williamsburg in September?

There are normally 8 hours of bright sunshine each day in Williamsburg in September - that's 62% of daylight hours.

Does it rain in Williamsburg in September?

There are usually 8 days with some rain in Williamsburg in September and the average monthly rainfall is 106mm.

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

On average 1.1 days in September in Williamsburg are likely to be affected by the passage of one or more tropical storms.

Williamsburg September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:38 18:35
Monday, 15th September 2025 05:49 18:14
Tuesday, 30th September 2025 06:02 17:51

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