Current sea water temperature:
+33.3°F
| Minimum sea water temperature in February: | 45.7°F |
| Maximum sea water temperature in February: | 33.1°F |
| Average sea water temperature in February: | 40.6°F |
| more information | |
14 days
forecast
forecast
| Dewey Beach |
monthly
weather
weather
| Dewey Beach |
Sea water temperature for the last 10 days:
| February 5 | 33.3°F | January 31 | 34.7°F |
| February 4 | 33.4°F | January 30 | 36.0°F |
| February 3 | 33.1°F | January 29 | 36.5°F |
| February 2 | 34.3°F | January 28 | 36.9°F |
| February 1 | 34.9°F | January 27 | 36.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Dewey Beach?
Based on the data about daily sea water temperature for the last three years the warmest sea in Dewey Beach was noticed in July, August and September.
Monthly Sea Temperatures in Dewey Beach, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 77.6°F. The highest and lowest sea temperatures during the month were 80.1°F and 74.5°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 76.4°F. The highest and lowest sea temperatures during the month were 82.2°F and 74.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 72.6°F. The highest and lowest sea temperatures during the month were 74.8°F and 70.9°F.
current
weather
weather
| Dewey Beach |
weather in
February
February
| Dewey Beach |
Best time for vacation in Dewey Beach
Dewey Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Dewey Beach
Local time: 20:59
February 05, thursday
2100
28°F
S
12 mph
12 mph
February 06, friday
0000
28°F
S
12 mph
12 mph
0300
27°F
S
9 mph
9 mph
0600
27°F
SE
10 mph
10 mph
0900
27°F
SE
7 mph
7 mph
1200
30°F
SE
2 mph
2 mph
1500
32°F
W
2 mph
2 mph
1800
32°F
NW
8 mph
8 mph
