Wilmington weather in September 2024

Expect 77°F daytime maximum temperatures in the shade with on average 7 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 Delaware in 2024/2025.

77
77°F max day temperature
7
7 hours of sunshine per day
8
8 days with some rainfall
57
57°F min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
3.8
3.8 inches of monthly rainfall
6
6 (High) UV index
72
72°F sea temperature

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The September weather guide for Delaware (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) | Imperial (°F)

More about the USA

How hot is it in Wilmington in September?

Daytime temperatures usually reach 77°F in Wilmington in September with low heat and humidity, falling to 57°F at night.

How sunny is it in Wilmington in September?

There are normally 7 hours of bright sunshine each day in Wilmington in September - that's 59% of daylight hours.

How warm is the sea around Wilmington in September?

The average sea temperature around Wilmington in September is 72°F.

Does it rain in Wilmington in September?

There are usually 8 days with some rain in Wilmington in September and the average monthly rainfall is 3.8 inches.

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

On average less than 1 day in September in Wilmington is 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 2024. Select a month to view Wilmington sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st September 2024	06:31	19:32
Sunday, 15th September 2024	06:44	19:10
Monday, 30th September 2024	06:58	18:45

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Delaware - quick facts
Flight time^✝	8 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Tourist info	Delaware Tourism Office