South Dennis Weather in August

South Dennis in August averages 26°C (79°F) during the day and 18°C (64°F) at night. This is the driest month of the year, and part of the summer season.

Rainfall in South Dennis in August

Conditions tend to be dry and settled, making it a good month for outdoor plans. Records from the past 30 years suggest around 9 days of rain, with 79 mm (3.1 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in South Dennis in August

If you're visiting South Dennis in August, expect perfect temperatures with highs of 26°C (79°F) and overnight lows of 18°C (64°F). August is a notable month of the summer season. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in South Dennis in August

With approximately 278 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit South Dennis.

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• 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 South Dennis's climate page.

South Dennis Temperature in August

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 30%  

Precipitation 79 mm (3.1 in)  

Rainy days 9 days  

Sunshine 278 hours *  

Percentage Sunshine *  

* Data from: Nantucket, the United States of America (45 KM, 28 Miles).

What to Wear in South Dennis in August

Warm but pleasant conditions in South Dennis in August. 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in South Dennis in August

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

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 South Dennis's climate page.

More climate data for South Dennis

Temperature Rainfall Sunshine

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