Current sea water temperature:
+40.6°F
| Minimum sea water temperature in January: | 48.4°F |
| Maximum sea water temperature in January: | 34.9°F |
| Average sea water temperature in January: | 42.7°F |
| more information | |
14 days
forecast
forecast
| Bethany Beach |
monthly
weather
weather
| Bethany Beach |
Sea water temperature for the last 10 days:
| January 11 | 40.6°F | January 6 | 39.4°F |
| January 10 | 40.5°F | January 5 | 39.6°F |
| January 9 | 39.9°F | January 4 | 39.7°F |
| January 8 | 40.1°F | January 3 | 39.9°F |
| January 7 | 39.9°F | January 2 | 40.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Bethany Beach?
Based on the data about daily sea water temperature for the last three years the warmest sea in Bethany Beach was noticed in July, August and September.
Monthly Sea Temperatures in Bethany Beach, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 75.6°F. The highest and lowest sea temperatures during the month were 77.9°F and 73.6°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 75.3°F. The highest and lowest sea temperatures during the month were 78.4°F and 72.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 72.7°F. The highest and lowest sea temperatures during the month were 74.7°F and 71.4°F.
current
weather
weather
| Bethany Beach |
weather in
January
January
| Bethany Beach |
Best time for vacation in Bethany Beach
Bethany Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Bethany Beach
Local time: 22:57
January 12, monday
0000
34°F
SE
25 mph
25 mph
0300
34°F
SE
23 mph
23 mph
0600
34°F
SE
18 mph
18 mph
0900
34°F
E
15 mph
15 mph
1200
39°F
E
14 mph
14 mph
1500
45°F
E
14 mph
14 mph
1800
43°F
NE
12 mph
12 mph
2100
37°F
NE
14 mph
14 mph
