Wilmington Weather in September

With daytime temperatures of 26°C (79°F) and nighttime lows of 16°C (61°F), September in Wilmington brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 114 mm (4.5 in) falls on average.

Rainfall in Wilmington in September

Typically, you can expect about 9 days of rain this month, with 114 mm (4.5 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Wilmington in September

September in Wilmington brings typical temperatures with highs around 26°C (79°F) and lows of 16°C (61°F). This kind of day-to-night contrast is typical for this time of year. With lows of 16°C (61°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Wilmington in September

The city usually sees around 218 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If you prefer dry days with pleasant temperatures, May typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Wilmington's climate page.

Wilmington Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 30%  

Precipitation 114 mm (4.5 in)  

Rainy days 9 days  

Humidity 72% *  

Sunshine 218 hours *  

Percentage Sunshine 59% *  

* Data from: Philadelphia, the United States of America (39 KM, 24 Miles).

What to Wear in Wilmington in September

Warm but pleasant conditions in Wilmington in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Wilmington in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Wilmington's climate page.

More climate data for Wilmington

Temperature Rainfall Sunshine Humidity

See the full Wilmington climate overview or explore weather in the United States of America.