Myrtle Beach, SC climate
Myrtle Beach has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 36°.
NOAA 1991-2020 climate normals Updated once a decade5° warmer than normal today. The forecast high is 84°, and a typical Oct 1 in Myrtle Beach peaks around 79°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Myrtle Beach feels like
Winter
Spring
Summer
Fall
Myrtle Beach weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 57° | 36° | 3.4" | 41° – 52° |
| February | 60° | 39° | 3.2" | 42° – 57° |
| March | 66° | 44° | 3.5" | 48° – 63° |
| April | 73° | 52° | 3.1" | 59° – 67° |
| May | 80° | 61° | 3.9" | 66° – 74° |
| June | 86° | 69° | 5.0" | 73° – 82° |
| July | 89° | 72° | 6.0" | 79° – 83° |
| August | 87° | 72° | 6.3" | 77° – 83° |
| September | 83° | 67° | 6.3" | 72° – 79° |
| October | 76° | 55° | 4.1" | 61° – 71° |
| November | 67° | 45° | 3.4" | 51° – 61° |
| December | 60° | 39° | 3.8" | 39° – 60° |
| Year | 74° | 54° | 52.0" |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Myrtle Beach
Myrtle Beach gets 52 inches of rain and melted snow a year. September is the wettest month and April the driest.
About 239 frost-free days a year
In half of years the last 32° night comes by March 21 and the first one by November 13. That leaves about 239 frost-free days for gardens, longer than 88% of U.S. towns.
Heating and cooling a home in Myrtle Beach
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Myrtle Beach, 60% of that work is heating and 40% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Myrtle Beach and its neighbors
Myrtle Beach borders 2 towns with climate data. January nights across them vary by 0.7°. Socastee has both the coldest January nights (36°) and the hottest July afternoons (90°). Myrtle Beach’s January low is 36° and its July high 89°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Myrtle Beach compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Myrtle Beach averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 79% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Myrtle Beach’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 39° to 60°. July is the most reliable, staying within 5°.
Common questions about Myrtle Beach’s climate
What is the coldest month in Myrtle Beach?
January, with a typical high of 57° and a low of 36°.
What is the hottest month in Myrtle Beach?
July, with a typical high of 89° and a low of 72°. About 22 days a year reach 90°.
When is the first frost in Myrtle Beach?
In half of years the first 32° night comes by November 13, and the last spring frost by March 21.
What is the rainiest month in Myrtle Beach?
September, with 6.3 inches of rain and melted snow. The year totals 52 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Myrtle Beach itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Myrtle Beach, SC (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.