Measurements:
°C
°F
South Bethany
70°F
NE 5 mph
Feels like: 70°F
Precip: 13%
World Resorts USA South Bethany Weather

South Bethany Sea Water Temperature

Current Sea Water Temperature:
+69.8°F
Maximum Sea Water Temperature in June: 82.0°F
Minimum Sea Water Temperature in June: 62.0°F
Average water temperature in June: 69.3°F

Sea Water Temperature for the Last 10 Days:

June 24 69.8°F June 19 70.4°F
June 23 73.0°F June 18 72.4°F
June 22 73.2°F June 17 70.2°F
June 21 70.2°F June 16 71.8°F
June 20 71.2°F June 15 72.4°F

When is the Warmest Sea for South Bethany?

According to our data for the last three years for South Bethany the highest average sea water temperature was in July, August and September.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for South Bethany was 78.4°F. The maximum and minimum values were 76.2°F and 81.0°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for South Bethany was 78.1°F. The maximum and minimum values were 75.4°F and 81.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for South Bethany was 75.2°F. The maximum and minimum values were 73.8°F and 77.4°F respectively.

Best Time to Visit South Bethany
The most sunny months:
November 17 days
October 15 days
January 14 days
The most warm months:
July 85.8 °F
August 83.1 °F
June 79.6 °F
Warmest sea temperature:
July 77.1 °F
August 77.0 °F
September 75.8 °F
The most cold months:
January 39.9 °F
February 42.8 °F
December 45.5 °F
The most rainy months:
August 4 days
July 3 days
October 3 days
The most windy months:
March 12 mph
January 12 mph
February 11 mph

South Bethany on the Weather Map

USA Resorts:
NAME
Chicago +66
Hawaii +80
Honolulu +80
Houston +82
Las Vegas +96
Los Angeles +66
Maui +74
Miami +80
Miami Beach +88
Myrtle Beach +78
New York +70
San Diego +68
San Francisco +58
Sarasota +84
Tampa +84
24 Hours Weather Forecast
South Bethany
Local time: 00:21
25 jun, thursday
0300 68°F
NE
8 mph
0600 68°F
NE
7 mph
0900 74°F
NE
6 mph
1200 76°F
N
12 mph
1500 76°F
N
16 mph
1800 74°F
N
17 mph
2100 74°F
N
17 mph
26 jun, friday
0000 74°F
N
17 mph