Current sea water temperature:
+77.4°F
| Minimum sea water temperature in September: | 79.7°F |
| Maximum sea water temperature in September: | 68.5°F |
| Average sea water temperature in September: | 73.5°F |
| more information | |
14 days
forecast
forecast
| Bethany Beach |
monthly
weather
weather
| Bethany Beach |
Sea water temperature for the last 10 days:
| September 9 | 77.4°F | September 4 | 77.2°F |
| September 8 | 77.2°F | September 3 | 75.7°F |
| September 7 | 77.0°F | September 2 | 77.5°F |
| September 6 | 78.4°F | September 1 | 77.4°F |
| September 5 | 78.4°F | August 31 | 76.3°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 August, July and September.
Monthly Sea Temperatures in Bethany Beach, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 75.8°F. The highest and lowest sea temperatures during the month were 77.9°F and 73.9°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 74.0°F. The highest and lowest sea temperatures during the month were 76.3°F and 71.4°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
September
September
| 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: 18:46
September 09, wednesday
2100
77°F
N
22 mph
22 mph
September 10, thursday
0000
77°F
NE
24 mph
24 mph
0300
75°F
NE
22 mph
22 mph
0600
75°F
NE
21 mph
21 mph
0900
77°F
NE
19 mph
19 mph
1200
79°F
E
13 mph
13 mph
1500
84°F
E
4 mph
4 mph
1800
81°F
W
8 mph
8 mph
