Dewey Beach Weather in September

Dewey Beach in September sees high temperatures, with highs around 26°C (79°F) and overnight lows of 18°C (64°F). Rainfall is fairly high at around 106 mm (4.2 in) on average, so pack waterproofs just in case.

Rainfall in Dewey Beach in September

Expect around 10 days of rain based on historical data, with 106 mm (4.2 in) 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 Dewey Beach in September

Daytime highs in Dewey Beach in September reach 26°C (79°F), with nights around 18°C (64°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Should you favor a climate that's both dry and comfortably warm, May typically offers the most agreeable 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 Dewey Beach's climate page.

Dewey Beach Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 33%  

Precipitation 106 mm (4.2 in)  

Rainy days 10 days  

What to Wear in Dewey Beach in September

Warm but pleasant conditions in Dewey Beach 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.

What To Do in Dewey Beach in September

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

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 Dewey Beach's climate page.

More climate data for Dewey Beach

Temperature Rainfall

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