Wilmington weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Wilmington in September. Check more long-term weather averages for Wilmington in September before you book your next holiday to North Carolina in 2025/2026.

  • 30°C maximum daytime temperature in September in Wilmington30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in September in Wilmington9
    9 days with some rainfall
  • 18°C minimum night-time temperature in September in Wilmington18
    18°C min night temperature
  • 12 hours of daylight per day in September in Wilmington12
    12 hours of daylight per day
  • Moderate heat & humidity in September in WilmingtonM
    Moderate heat & humidity
  • 139 mm monthly rainfall in September in Wilmington139
    139 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Wilmington8
    8 (Very High) UV index
  • 26°C sea temperature in September in Wilmington26
    26°C sea temperature

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The September weather guide for North Carolina (Wilmington) 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 Wilmington in September?

Daytime temperatures usually reach 30°C in Wilmington in September with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Wilmington in September?

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

How warm is the sea around Wilmington in September?

The average sea temperature around Wilmington in September is 26°C.

Does it rain in Wilmington in September?

There are usually 9 days with some rain in Wilmington in September and the average monthly rainfall is 139mm.

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

On average 1.4 days in September in Wilmington are likely to be affected by the passage of one or more tropical storms.

Wilmington September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:45 18:37
Monday, 15th September 2025 05:55 18:18
Tuesday, 30th September 2025 06:06 17:57

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