World Resorts

USA

Dewey Beach Weather

Dewey Beach 14 Days Forecast

30.09
wed

Day

68°F

S 3 mph

Precip.
24%

Night

66°F

N 10 mph

Precip.
26%

01.10
thu

Day

70°F

N 9 mph

Precip.
22%

Night

68°F

N 16 mph

Precip.
24%

02.10
fri

Day

72°F

N 11 mph

Precip.
6%

Night

68°F

N 14 mph

Precip.
10%

03.10
sat

Day

66°F

S 11 mph

Precip.
27%

Night

64°F

SW 8 mph

Precip.
22%

04.10
sun

Day

63°F

SW 5 mph

Precip.
44%

Night

61°F

S 17 mph

Precip.
31%

05.10
mon

Day

63°F

NW 16 mph

Precip.
11%

Night

61°F

S 21 mph

Precip.
4%

06.10
tue

Day

57°F

NW 16 mph

Precip.
3%

Night

57°F

SW 16 mph

Precip.
4%

07.10
wed

Day

59°F

W 17 mph

Precip.
3%

Night

61°F

NW 13 mph

Precip.
4%

08.10
thu

Day

63°F

W 9 mph

Precip.
19%

Night

64°F

W 15 mph

Precip.
28%

09.10
fri

Day

63°F

SW 20 mph

Precip.
60%

Night

61°F

S 13 mph

Precip.
22%

10.10
sat

Day

59°F

SW 9 mph

Precip.
25%

Night

63°F

W 9 mph

Precip.
27%

11.10
sun

Day

63°F

SW 5 mph

Precip.
11%

Night

63°F

NE 9 mph

Precip.
13%

12.10
mon

Day

61°F

SE 25 mph

Precip.
5%

Night

59°F

SW 9 mph

Precip.
2%

13.10
tue

Day

55°F

SW 4 mph

Precip.
3%

Night

61°F

N 14 mph

Precip.
6%

sea water
temperature

Dewey Beach

monthly
weather

Dewey Beach

current
weather

Dewey Beach

7 days
forecast

Dewey Beach

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in September of 2026 was 74.2°F. The highest and lowest sea temperatures during the month were 78.8°F and 66.2°F.

Show year:

2025

2024

2023

The average sea water temperature in October of 2025 was 65.8°F. The highest and lowest sea temperatures during the month were 72.0°F and 59.2°F.