Measurements:
°C
°F
South Bethany
66°F
S 19 mph
Feels like: 66°F
Precip: 2%
World Resorts USA South Bethany Weather

South Bethany Sea Water Temperature

Current Sea Water Temperature:
+68.4°F
Maximum Sea Water Temperature in October: 74.8°F
Minimum Sea Water Temperature in October: 61.0°F
Average water temperature in October: 68.2°F

Sea Water Temperature for the Last 10 Days:

October 05 68.4°F September 30 68.0°F
October 04 68.8°F September 29 67.2°F
October 03 69.4°F September 28 67.8°F
October 02 69.6°F September 27 69.0°F
October 01 67.6°F September 26 70.8°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 August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for South Bethany was 78.6°F. The maximum and minimum values were 76.6°F and 81.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for South Bethany was 76.7°F. The maximum and minimum values were 73.8°F and 79.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for South Bethany was 77.0°F. The maximum and minimum values were 67.2°F and 81.6°F respectively.

Best Time to Visit South Bethany
The most sunny months:
November 17 days
June 15 days
October 15 days
The most warm months:
July 85.4 °F
August 82.8 °F
June 79.3 °F
Warmest sea temperature:
August 77.2 °F
July 77.1 °F
September 76.0 °F
The most cold months:
January 39.9 °F
February 42.8 °F
December 45.5 °F
The most rainy months:
August 3 days
October 3 days
July 3 days
The most windy months:
March 12 mph
January 12 mph
February 11 mph

South Bethany on the Weather Map

USA Resorts:
NAME
F°
Boston +52
Chicago +58
Hawaii +80
Houston +82
Las Vegas +82
Los Angeles +96
Maui +72
Miami +86
Myrtle Beach +68
New York +56
San Diego +86
San Francisco +66
Santa Monica +88
Sarasota +80
Washington +58
24 Hours Weather Forecast
South Bethany
Local time: 00:31
06 oct, tuesday
0300 62°F
S
20 mph
0600 60°F
S
17 mph
0900 56°F
S
16 mph
1200 56°F
S
15 mph
1500 58°F
S
11 mph
1800 60°F
S
9 mph
2100 62°F
SE
6 mph
07 oct, wednesday
0000 60°F
SE
4 mph