Myrtle Beach SC Average Temperatures 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

Myrtle Beach Temperatures: Averages by Month

Days of Hot Weather in Myrtle Beach

How Often Myrtle Beach Has Cold Temperatures

References

More on Weather in South Carolina