Measurements:
°C
°F
Myrtle Beach
50°F
W 4 mph
Feels like: 48°F
Precip: 100%
World Resorts USA Myrtle Beach Weather

Myrtle Beach Sea Water Temperature

Current Sea Water Temperature:
+58.2°F
Maximum Sea Water Temperature in December: 66.4°F
Minimum Sea Water Temperature in December: 48.6°F
Average water temperature in December: 57.3°F

Sea Water Temperature for the Last 10 Days:

December 04 58.2°F November 29 63.0°F
December 03 61.8°F November 28 63.6°F
December 02 61.2°F November 27 64.8°F
December 01 60.4°F November 26 63.8°F
November 30 61.6°F November 25 64.0°F

When is the Warmest Sea for Myrtle Beach?

According to our data for the last three years for Myrtle Beach 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: 2025 2024 2023

The average sea surface temperature in August 2025 for Myrtle Beach was 86.8°F. The maximum and minimum values were 85.4°F and 90.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Myrtle Beach was 85.4°F. The maximum and minimum values were 80.0°F and 89.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Myrtle Beach was 81.8°F. The maximum and minimum values were 78.4°F and 84.6°F respectively.

Best Time to Visit Myrtle Beach
The most sunny months:
October 17 days
November 16 days
April 16 days
The most warm months:
July 91.2 °F
August 89.4 °F
June 87.9 °F
Warmest sea temperature:
August 86.7 °F
July 86.5 °F
September 83.7 °F
The most cold months:
January 54.3 °F
December 58.4 °F
February 59.3 °F
The most rainy months:
August 5 days
July 4 days
June 3 days
The most windy months:
March 9 mph
April 8 mph
February 8 mph

Myrtle Beach on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +80
Honolulu +80
Houston +46
Las Vegas +44
Los Angeles +56
Maui +72
Miami +72
Miami Beach +80
New York +22
San Diego +58
San Francisco +48
Sarasota +64
Tampa +64
Washington +28
24 Hours Weather Forecast
Myrtle Beach
Local time: 00:20
05 dec, friday
0300 50°F
NW
7 mph
0600 48°F
W
1 mph
0900 48°F
SW
4 mph
1200 46°F
W
5 mph
1500 44°F
S
6 mph
1800 44°F
S
7 mph
2100 42°F
S
7 mph
06 dec, saturday
0000 42°F
S
8 mph