December weather forecast
North Myrtle Beach, SC

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Weather in December

In December, North Myrtle Beach dons a complete winter cloak, with temperatures dropping further from November. The month revels in its wintry charm, delighting residents and visitors with the promise of holiday cheer. Despite being the coldest month in the city, December's weather often flutters between chilly and mildly cold. The disappearing daylight hours pave the way for long evenings, ideal for holiday-themed activities and events. If lucky, residents might get to witness snow, as December records a 0.3-day snowfall, an elusive rarity in this coastal city.

Temperature

As North Myrtle Beach welcomes December, the average high-temperature is noted at a still refreshing 58.5°F (14.7°C), closely aligning with the preceding month. December brings an average low-temperature of 46.6°F (8.1°C) to North Myrtle Beach.

Humidity

The months with the highest humidity are May, June, August and December, with an average relative humidity of 78%.

Rainfall

In North Myrtle Beach, in December, it is raining for 7.6 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in North Myrtle Beach, there are 115.4 rainfall days, and 10.75" (273mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows in North Myrtle Beach. Throughout December, there are 0.3 snowfall days. In North Myrtle Beach, during the entire year, snow falls for 1.1 days.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:02 am and sunset at 5:05 pm. On the last day of December, sunrise is at 7:19 am and sunset at 5:16 pm EST.

Sunshine

The months with the least sunshine in North Myrtle Beach are January and December, with an average of 5.6h of sunshine.

UV index

The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 4 turns into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

In North Myrtle Beach, in December, the average high-temperature is 58.5°F (14.7°C), and the average low-temperature is 46.6°F (8.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 87.8°F (31°C).

What is the most humid month?

The months with the highest humidity are May, June, August and December, with an average relative humidity of 78%.

What is the average humidity in December?

In December, the average relative humidity is 78%.

How much does it rain in North Myrtle Beach in December?

In North Myrtle Beach, during December, the rain falls for 7.6 days and regularly aggregates up to 1.02" (26mm) of precipitation.

When does it start to snow?

December is the first month it typically snows. Throughout December, there are 0.3 snowfall days.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 57min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:16 pm EST.

What is the month with the least sunshine?

January and December, with an average of 5.6h of sunshine, are months with the least sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 5.6h.

What is the UV index reading in December in North Myrtle Beach?

In North Myrtle Beach, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
North Myrtle Beach, SC

Average temperature in December - North Myrtle Beach, SC
  • Average high temperature in December: 58.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in December: 46.6°F

The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in December
North Myrtle Beach, SC

Average pressure in December - North Myrtle Beach, SC
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in December
North Myrtle Beach, SC

Average wind speed in December - North Myrtle Beach, SC
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

Average humidity in December
North Myrtle Beach, SC

Average humidity in December - North Myrtle Beach, SC
  • Average humidity in December: 78%

The months with the highest relative humidity are May, June, August and December (78%).
The month with the lowest relative humidity is January (74%).

Average rainfall in December
North Myrtle Beach, SC

Average rainfall in December - North Myrtle Beach, SC
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is August (1.81").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in December
North Myrtle Beach, SC

Average rainfall days in December - North Myrtle Beach, SC
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is August (16 days).
The month with the least rainy days is January (6.3 days).

Average snowfall days in December
North Myrtle Beach, SC

Average snowfall days in December - North Myrtle Beach, SC
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
North Myrtle Beach, SC

Average daylight in December / Average sunshine in December - North Myrtle Beach, SC
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in December
North Myrtle Beach, SC

Average sunshine days in December - North Myrtle Beach, SC
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is August (10.8 days).

Average UV index in December
North Myrtle Beach, SC

Average UV index in December - North Myrtle Beach, SC
  • Average UV index in December: 4

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in December
North Myrtle Beach, SC

Average cloud cover in December - North Myrtle Beach, SC
  • Average cloud cover in December: 40

The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is June (Cloud cover 25).

Average visibility in December
North Myrtle Beach, SC

Average visibility in December - North Myrtle Beach, SC
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

North Myrtle Beach, South Carolina, USA

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