Dewey Beach (DE) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dewey Beach.
Climate overview of Dewey Beach
Dewey Beach, Delaware, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 31°C (88°F) in July, while winters cool to 7°C (45°F) in January.
Rain/snowfall is high, totalling around 1183 mm (47 in) per year. October is the wettest month and May the driest. The city also experiences very warm summers and cold winters.
Dewey Beach Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dewey Beach - and find the best time to visit.
Monthly Temperature in Dewey Beach
Depending on the time of the year, temperatures range from very warm to chilly in Dewey Beach. Average maximum daytime temperatures range from a very warm 31°C (88°F) in July, the warmest time of the year, to a chilly 7°C (45°F) during cooler months like January.
At night, you can expect temperatures ranging from 22°C (72°F) in July to around -2°C (28°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dewey Beach
Dewey Beach has a relatively rain/snowy climate with high precipitation levels, averaging 1183 mm (47 in) of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. October brings wetter days averaging 136 mm (5.4 in) of precipitation, spread over 11 rainy days.
In contrast, the driest month May experiences a drier climate, with about 77 mm (3 in) of rainfall spread across 13 rainy days. For more details, please visit our Dewey Beach Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Dewey Beach
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May
- Warmest weather: July and August
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Dewey Beach
What is the best time to visit Dewey Beach?
May typically offers the most optimal weather in Dewey Beach. In contrast, January, February and December tend to have less optimal conditions. Dewey Beach has very warm summers and cold winters.
What temperatures can I expect in Dewey Beach?
Daytime highs range from 7°C (45°F) in January to 31°C (88°F) in July. Nighttime lows range from -2°C (28°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Dewey Beach get?
Annual rainfall is around 1183 mm (47 in). October is the wettest month with 136 mm (5.4 in), while May is the driest with 77 mm (3 in).
Dewey Beach 3-Day Forecast
Dewey Beach on the map
Dewey Beach is highlighted - select any city to see its climate.
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