Measurements:
°C
°F
CURRENT WEATHER
20:56
Dewey Beach
68°F
SE 16 mph
Feels like: 68°F
Precip: 5%
World Resorts USA Dewey Beach Weather

7 Day Weather Forecast

10.05
mon
DAY
68°F
SE 9 mph
precip
22%
NIGHT
64°F
S 22 mph
precip
2%
10.06
tue
DAY
56°F
S 13 mph
precip
2%
NIGHT
60°F
NE 4 mph
precip
2%
10.07
wed
DAY
64°F
N 10 mph
precip
2%
NIGHT
66°F
N 17 mph
precip
6%
10.08
thu
DAY
72°F
NE 7 mph
precip
5%
NIGHT
70°F
SE 12 mph
precip
20%
10.09
fri
DAY
64°F
S 14 mph
precip
4%
NIGHT
66°F
S 4 mph
precip
13%
10.10
sat
DAY
64°F
NE 4 mph
precip
12%
NIGHT
66°F
NW 9 mph
precip
18%
10.11
sun
DAY
66°F
NW 14 mph
precip
36%
NIGHT
68°F
NW 21 mph
precip
75%

Dewey Beach Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Dewey Beach was 18.8°F. The maximum and minimum values were 15.1°F and 22.2°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 81.6 °F
June 77.6 °F
Warmest sea temperature:
July 78.3 °F
August 78.1 °F
September 75.8 °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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