World Resorts USA Bethany Beach Weather

Bethany Beach sea water temperature

Current sea water temperature:
+34.5°F
Minimum sea water temperature in February: 46.4°F
Maximum sea water temperature in February: 32.0°F
Average sea water temperature in February: 40.2°F

Sea water temperature for the last 10 days:

February 25 34.5°F February 20 35.8°F
February 24 35.4°F February 19 32.5°F
February 23 35.1°F February 18 32.2°F
February 22 35.4°F February 17 32.5°F
February 21 35.2°F February 16 32.2°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.

Best time for vacation in Bethany Beach

Sunniest months:
November 17 days
October 16 days
December 13 days
Warmest months:
July 80.2 °F
August 78.0 °F
June 74.3 °F
Warmest sea temp:
July 74.5 °F
August 74.4 °F
September 73.3 °F
Coldest months:
January 40.7 °F
February 43.7 °F
December 45.7 °F
Rainiest months:
August 3 days
December 3 days
July 3 days
Windiest months:
March 13.5 mph
January 13.2 mph
February 12.6 mph

Bethany Beach on a weather map

Bethany Beach
+36°F
NE 22 mph
Feels like: +25°F
Precip.: 0%
Places in USA:
Name
°F
+32°F
+68°F
+68°F
+57°F
+57°F
+46°F
+63°F
+63°F
+12°F
+59°F
+59°F
+48°F
+46°F
+61°F
+34°F
24 Hours Forecast
Bethany Beach
Local time: 03:51
February 25, wednesday
0600
36°F
NE
23 mph
0900
37°F
NE
19 mph
1200
39°F
NE
19 mph
1500
41°F
NE
14 mph
1800
41°F
NE
12 mph
2100
39°F
NE
12 mph
February 26, thursday
0000
39°F
E
11 mph
0300
37°F
S
11 mph
Units of measurement: °C / °F