Current sea water temperature:
+61.2°F
| Minimum sea water temperature in October: | 72.1°F |
| Maximum sea water temperature in October: | 59.2°F |
| Average sea water temperature in October: | 65.8°F |
| more information | |
14 days
forecast
forecast
| Dewey Beach |
monthly
weather
weather
| Dewey Beach |
Sea water temperature for the last 10 days:
| October 24 | 61.2°F | October 19 | 64.6°F |
| October 23 | 61.3°F | October 18 | 66.4°F |
| October 22 | 62.1°F | October 17 | 68.2°F |
| October 21 | 63.3°F | October 16 | 67.6°F |
| October 20 | 63.9°F | October 15 | 67.5°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 76.1°F. The highest and lowest sea temperatures during the month were 80.6°F and 72.7°F.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 77.3°F. The highest and lowest sea temperatures during the month were 81.0°F and 74.5°F.
Sea water temperature in September, °F
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.
current
weather
weather
| Dewey Beach |
weather in
October
October
| 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: 00:17
October 25, sunday
0300
57°F
SW
5 mph
5 mph
0600
57°F
SW
6 mph
6 mph
0900
55°F
S
7 mph
7 mph
1200
55°F
S
6 mph
6 mph
1500
57°F
S
2 mph
2 mph
1800
57°F
NW
3 mph
3 mph
2100
59°F
NW
4 mph
4 mph
October 26, monday
0000
57°F
NE
5 mph
5 mph
