Measurements:
°C
°F
CURRENT WEATHER
16:47
Dewey Beach
98°F
E 9 mph
Feels like: 100°F
Precip: 1%
World Resorts USA Dewey Beach Weather

7 Day Weather Forecast

07.15
wed
DAY
96°F
E 10 mph
precip
1%
NIGHT
82°F
NE 11 mph
precip
3%
07.16
thu
DAY
86°F
NE 2 mph
precip
5%
NIGHT
84°F
SE 9 mph
precip
15%
07.17
fri
DAY
82°F
S 4 mph
precip
3%
NIGHT
78°F
N 9 mph
precip
6%
07.18
sat
DAY
80°F
NW 6 mph
precip
81%
NIGHT
76°F
NE 18 mph
precip
81%
07.19
sun
DAY
86°F
SE 14 mph
precip
14%
NIGHT
76°F
SW 7 mph
precip
5%
07.20
mon
DAY
80°F
W 7 mph
precip
4%
NIGHT
78°F
N 14 mph
precip
19%
07.21
tue
DAY
84°F
E 12 mph
precip
37%
NIGHT
72°F
SE 16 mph
precip
12%

Dewey Beach Sea Water Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Dewey Beach was 24.5°F. The maximum and minimum values were 22.6°F and 27.0°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 84.2 °F
August 81.5 °F
June 77.6 °F
Warmest sea temperature:
July 78.2 °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
more details