January weather forecast
Myrtle Beach, SC

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The glorious Myrtle Beach in South Carolina, with lit city buildings
The glorious Myrtle Beach in South Carolina, with lit city buildings

Weather in January

The New Year ushers in cooler temperatures to Myrtle Beach, South Carolina with the city experiencing mild winters. January marks the beginning of the year with relatively cool weather, with a high average temperature of 54.3°F (12.4°C) and a low of 42.1°F (5.6°C). The precipitation situation is typically mild with rainfall amounting to approximately 1.02" (26mm) disseminated over an estimated 10.3 days. Transitioning from the chill of January, February welcomes slight improvements in the weather conditions. The crisp nature of the winter season, the limited daylight hours of approximately 10.2 and a moderate UV index of 3 make this month ideal for outdoor explorations without excessive heat.

Temperature

January, on average, is the coldest month in Myrtle Beach, registering a high temperature of 54.3°F (12.4°C) and a low of 42.1°F (5.6°C).

Humidity

The months with the lowest humidity are January and November, with an average relative humidity of 74%.

Rainfall

January is the month with the least rainfall in Myrtle Beach. Rain falls for 10.3 days and accumulates 1.02" (26mm) of precipitation.

Snowfall

January, February and December are months with snowfall in Myrtle Beach. In Myrtle Beach, in January, snow falls for 0.4 days, with typically accumulated 0.04" (1mm) of snow. Throughout the year, there are 1 snowfall days, and 0.16" (4mm) of snow is accumulated.

Ocean temperature

In Myrtle Beach, the average seawater temperature in January is 60.8°F (16°C).
Note: Swimming in 60.8°F (16°C) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in January is 10h and 13min.
On the first day of January, sunrise is at 7:20 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:45 pm EST.

Sunshine

The average sunshine in January is 5.7h.

UV index

January is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In January, a daily maximum UV index of 3 leads to the following instructions:
Act with care - The need to guard against sun damage is communicated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What part of the year is the coldest in Myrtle Beach?

January stands out as Myrtle Beach's coldest month, with an average high-temperature of 54.3°F (12.4°C) and a low-temperature of 42.1°F (5.6°C).

What is the temperature in January in Myrtle Beach?

In January, the average high-temperature and low-temperature are 54.3°F (12.4°C) and 42.1°F (5.6°C) respectively.

What are the least humid months in Myrtle Beach?

The months with the lowest humidity in Myrtle Beach are January and November, with an average relative humidity of 74%.

What is the average humidity in January in Myrtle Beach?

The average relative humidity in January in Myrtle Beach, South Carolina, is 74%.

What is the driest month in Myrtle Beach?

January is the month with the least rainfall in Myrtle Beach, South Carolina. Rain falls for 10.3 days and accumulates 1.02" (26mm) of precipitation.

How much does it rain in Myrtle Beach in January?

In January, the rain falls for 10.3 days. Throughout January, 1.02" (26mm) of precipitation is accumulated.

How many days does it snow in January in Myrtle Beach?

In Myrtle Beach, South Carolina, during January, snow falls for 0.4 days and regularly aggregates up to 0.04" (1mm) of snow.

How cold is the water in January in Myrtle Beach?

In January, the average ocean temperature in Myrtle Beach is 60.8°F (16°C). For most, swimming in 60.8°F (16°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in January in Myrtle Beach?

In Myrtle Beach, South Carolina, the average day length in January is 10h and 13min.

When are sunrise and sunset in January in Myrtle Beach?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 5:17 pm. On the last day of the month, in Myrtle Beach, sunrise is at 7:12 am and sunset at 5:45 pm EST.

How many hours of sunshine does Myrtle Beach have in January?

In Myrtle Beach, the average sunshine duration in January is 5.7h.

What is the month with the lowest UV index in Myrtle Beach?

With an average maximum UV index of 3, January is the month with the lowest UV index.

What is the UV index intensity in January in Myrtle Beach?

The average daily maximum UV index in January in Myrtle Beach, South Carolina, is 3. A UV Index estimate of 3 to 5 represents 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 January
Myrtle Beach, SC

Average temperature in January - Myrtle Beach, SC
  • Average high temperature in January: 54.3°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 (54.3°F).

  • Average low temperature in January: 42.1°F

The month with the highest average low temperature is July (76.3°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).

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Average pressure in January
Myrtle Beach, SC

Average pressure in January - Myrtle Beach, SC
  • Average pressure in January: 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).

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Average wind speed in January
Myrtle Beach, SC

Average wind speed in January - Myrtle Beach, SC
  • Average wind speed in January: 9.6mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).

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Average humidity in January
Myrtle Beach, SC

Average humidity in January - Myrtle Beach, SC
  • Average humidity in January: 74%

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

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Average rainfall in January
Myrtle Beach, SC

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

The wettest month (with the highest rainfall) is August (4.53").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in January
Myrtle Beach, SC

Average rainfall days in January - Myrtle Beach, SC
  • Average rainfall days in January: 10.3 days

The months with the highest number of rainy days are July and August (19.8 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in January
Myrtle Beach, SC

Average snowfall in January - Myrtle Beach, SC
  • Average snowfall in January: 0.04"

The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in January
Myrtle Beach, SC

Average snowfall days in January - Myrtle Beach, SC
  • Average snowfall days in January: 0.4 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).

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Average sea temperature in January
Myrtle Beach, SC

Average sea temperature in January - Myrtle Beach, SC
  • Average sea temperature in January: 60.7°F

The best month for swimming (with the highest average sea temperature) is August (82.9°F).
The coldest month (with the lowest average sea temperature) is March (57.7°F).

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Average daylight in January /
Average sunshine in January
Myrtle Beach, SC

Average daylight in January / Average sunshine in January - Myrtle Beach, SC
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in January
Myrtle Beach, SC

Average sunshine days in January - Myrtle Beach, SC
  • Average sunshine days in January: 18.4 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (8.2 days).

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Average UV index in January
Myrtle Beach, SC

Average UV index in January - Myrtle Beach, SC
  • Average UV index in January: 3

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).

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Average cloud cover in January
Myrtle Beach, SC

Average cloud cover in January - Myrtle Beach, SC
  • Average cloud cover in January: 37

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

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Average visibility in January
Myrtle Beach, SC

Average visibility in January - Myrtle Beach, SC
  • Average visibility in January: 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).

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Myrtle Beach, South Carolina, USA

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