Myrtle Beach Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Myrtle Beach, South Carolina during each month of the year.

The average high and low temperatures are listed below monthly and annually for Myrtle Beach, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month at Myrtle Beach, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Myrtle Beach, 2010 to 2019
High °F Low °F   High °C Low °C
56 36 January 13 2
59 40 February 15 4
65 45 March 18 7
72 54 April 22 12
80 64 May 27 18
86 71 June 30 22
88 74 July 31 23
87 73 August 30 23
84 69 September 29 21
76 57 October 25 14
66 45 November 19 7
61 42 December 16 5
73 56 Year 23 13
30-year temperature averages for Myrtle Beach, 1991 to 2020
High °F Low °F   High °C Low °C
56 37 January 13 3
58 40 February 15 4
65 45 March 18 7
72 53 April 22 12
79 62 May 26 17
85 70 June 29 21
88 74 July 31 23
87 73 August 30 23
83 68 September 28 20
76 56 October 24 14
66 46 November 19 8
59 40 December 15 4
73 55 Year 23 13

Days of Hot Weather in Myrtle Beach

Temperatures can climb to 90 °F or above anytime from May to September. A hot spell is also possible in April or October, although that rarely happens.

Temperatures above 100 °F (38 °C) are not normal here.

Days per month in Myrtle Beach of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 2 0 0
February 3 0 0
March 9 1 0
April 21 2 0
May 30 15 1
June 30 28 4
July 31 31 8
August 31 30 6
September 30 25 2
October 26 10 0
November 12 1 0
December 4 0 0
Year 229 143 21

How Often Myrtle Beach Has Cold Temperatures

Freezing nights occur at Myrtle Beach periodically from November to March. Occasionally frost arrives as early as October or as late as April.

Only two nights a year on average get as chilly as 20 °F (-8 °C). The coldest weather is most likely to show up in January, but is also possible in December or February. No matter how cold it is at night, Myrtle Beach normally warms up to above freezing during the day.

Days per month on average in Myrtle Beach when the minimum temperature drops to 32, 40, or 50 °F or below
  32 °F
0 °C
40 °F
4 °C
50 °F
10 °C
January 12 20 28
February 7 17 25
March 3 10 21
April 0 2 11
May 0 0 2
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 1 8
November 3 10 21
December 9 17 26
Year 34 78 142
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Myrtle Beach Weather
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