Current sea water temperature:
+41.4°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 15 | 41.4°F | January 10 | 40.5°F |
| January 14 | 41.4°F | January 9 | 39.9°F |
| January 13 | 41.2°F | January 8 | 40.1°F |
| January 12 | 42.1°F | January 7 | 39.9°F |
| January 11 | 40.6°F | January 6 | 39.4°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: 17:02
January 15, thursday
1800
34°F
E
22 mph
22 mph
2100
30°F
E
22 mph
22 mph
January 16, friday
0000
28°F
E
24 mph
24 mph
0300
28°F
E
26 mph
26 mph
0600
28°F
E
24 mph
24 mph
0900
30°F
E
20 mph
20 mph
1200
36°F
E
14 mph
14 mph
1500
37°F
NE
16 mph
16 mph
