Current sea water temperature:
+51.4°F
| Minimum sea water temperature in December: | 64.8°F |
| Maximum sea water temperature in December: | 48.7°F |
| Average sea water temperature in December: | 56.5°F |
| more information | |
14 days
forecast
forecast
| Myrtle Beach |
monthly
weather
weather
| Myrtle Beach |
Sea water temperature for the last 10 days:
| December 18 | 51.4°F | December 13 | 53.6°F |
| December 17 | 51.8°F | December 12 | 53.8°F |
| December 16 | 51.8°F | December 11 | 54.7°F |
| December 15 | 53.2°F | December 10 | 56.5°F |
| December 14 | 53.8°F | December 9 | 59.5°F |
Monthly sea water temperature, °F
When is the warmest sea in Myrtle Beach?
Based on the data about daily sea water temperature for the last three years the warmest sea in Myrtle Beach was noticed in August, July and September.
Monthly Sea Temperatures in Myrtle Beach, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 83.1°F. The highest and lowest sea temperatures during the month were 86.0°F and 81.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 81.8°F. The highest and lowest sea temperatures during the month were 85.5°F and 77.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 78.6°F. The highest and lowest sea temperatures during the month were 81.1°F and 75.6°F.
current
weather
weather
| Myrtle Beach |
weather in
December
December
| Myrtle Beach |
Best time for vacation in Myrtle Beach
Myrtle Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Myrtle Beach
Local time: 04:26
December 18, thursday
0600
55°F
W
7 mph
7 mph
0900
57°F
W
8 mph
8 mph
1200
63°F
NW
14 mph
14 mph
1500
64°F
NW
14 mph
14 mph
1800
63°F
N
14 mph
14 mph
2100
63°F
N
9 mph
9 mph
December 19, friday
0000
61°F
NE
10 mph
10 mph
0300
59°F
NE
17 mph
17 mph
