Current sea water temperature:
+41.7°F
| Minimum sea water temperature in December: | 56.8°F |
| Maximum sea water temperature in December: | 41.0°F |
| Average sea water temperature in December: | 48.0°F |
| more information | |
14 days
forecast
forecast
| South Bethany |
monthly
weather
weather
| South Bethany |
Sea water temperature for the last 10 days:
| December 30 | 41.7°F | December 25 | 43.2°F |
| December 29 | 41.4°F | December 24 | 41.5°F |
| December 28 | 41.0°F | December 23 | 41.5°F |
| December 27 | 41.5°F | December 22 | 42.1°F |
| December 26 | 42.4°F | December 21 | 42.4°F |
Monthly sea water temperature, °F
When is the warmest sea in South Bethany?
Based on the data about daily sea water temperature for the last three years the warmest sea in South Bethany was noticed in July, August and September.
Monthly Sea Temperatures in South Bethany, °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
| South Bethany |
weather in
January
January
| South Bethany |
Best time for vacation in South Bethany
South Bethany on a weather map
Places in USA:
Name
°F
24 Hours Forecast
South Bethany
Local time: 18:23
December 30, tuesday
2100
32°F
E
19 mph
19 mph
December 31, wednesday
0000
30°F
E
16 mph
16 mph
0300
30°F
E
16 mph
16 mph
0600
30°F
E
14 mph
14 mph
0900
32°F
NE
14 mph
14 mph
1200
37°F
E
16 mph
16 mph
1500
41°F
E
17 mph
17 mph
1800
39°F
NE
14 mph
14 mph
