Measurements:
°C
°F
CURRENT WEATHER
15:12
Dewey Beach
84°F
N 13 mph
Feels like: 92°F
Precip: 10%
World Resorts USA Dewey Beach Weather

7 Day Weather Forecast

08.05
wed
DAY
80°F
N 11 mph
precip
12%
NIGHT
78°F
N 12 mph
precip
13%
08.06
thu
DAY
84°F
N 12 mph
precip
10%
NIGHT
80°F
N 14 mph
precip
13%
08.07
fri
DAY
88°F
NE 9 mph
precip
7%
NIGHT
74°F
E 7 mph
precip
15%
08.08
sat
DAY
84°F
NE 9 mph
precip
9%
NIGHT
78°F
E 12 mph
precip
13%
08.09
sun
DAY
86°F
E 7 mph
precip
7%
NIGHT
80°F
NE 11 mph
precip
12%
08.10
mon
DAY
88°F
E 9 mph
precip
5%
NIGHT
82°F
NE 12 mph
precip
42%
08.11
tue
DAY
84°F
SE 10 mph
precip
9%
NIGHT
78°F
E 7 mph
precip
14%

Dewey Beach Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Dewey Beach was 24.7°F. The maximum and minimum values were 23.4°F and 27.9°F respectively.

Dewey Beach on the Weather Map

Best Time to Visit Dewey Beach
The most sunny months:
November 18 days
October 16 days
June 15 days
The most warm months:
July 84.1 °F
August 81.5 °F
June 77.6 °F
Warmest sea temperature:
July 78.3 °F
August 77.7 °F
September 75.6 °F
The most cold months:
January 39.5 °F
February 41.8 °F
December 45.1 °F
The most rainy months:
August 4 days
February 3 days
March 3 days
The most windy months:
March 13 mph
January 13 mph
February 12 mph
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