Weather in Myrtle Beach: December
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Average day temperature: | 57.2°F |
| Average night temperature: | 48.3°F | |
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Sea water temperature: | 56.2°F |
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Number of sunny days: | 15 days |
| Day length: | 9.9 - 10.1 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 0.9 in. | |
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forecast
| Myrtle Beach |
temperature
| Myrtle Beach |
Air temperature in December, °F
The highest day temperature during December of 2025 was 73°F. At the same time the lowest night temperature was 26°F. Daily and nightly averages during December were 55.3°F and 44.0°F.
Sea water temperature in Myrtle Beach in December, °F
The average sea water temperature in December of 2025 was 54.7°F. The highest and lowest sea temperatures during the month were 60.6°F and 51.3°F.
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Myrtle Beach in December is 0.9 in. Other months of the year show relatively similar values.
The average wind speed value in December is 8.1 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 6.1.
Best time for vacation in Myrtle Beach
Myrtle Beach on a weather map
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