Myrtle Beach, South Carolina climate: Normal weather by month, frost dates and records
Myrtle Beach's normal year runs from 37°F January nights to 88°F July afternoons, with 48.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.8°C, January lows of 3°C, July highs of 31°C, 1,231 mm of precipitation a year.
- NOAA stationNorth Myrtle Beach
- Station IDUSW00093718
- Location33.81°N 78.72°W
- Elevation32 ft (10 m)
- From the center12 miles
- Population40,535
On October 23, the normal high in Myrtle Beach is 74°F and the normal low 53°F, and the chance of measurable rain or snow is 29%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Myrtle Beach.
- Jan 56° 37°
- Feb 58° 40°
- Mar 65° 45°
- Apr 72° 53°
- May 79° 62°
- Jun 85° 70°
- Jul 88° 74°
- Aug 87° 73°
- Sep 83° 68°
- Oct 76° 56°
- Nov 66° 46°
- Dec 59° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Myrtle Beach each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 37°F. The most precipitation falls in September (6.65 in), the least in April (2.77 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 56°F | 37°F | 46.2°F | 3.01 | 10 | <1 | 12 | 10 h 10 min |
| February | 58°F | 40°F | 48.9°F | 3.18 | 9 | <1 | 7 | 11 h |
| March | 65°F | 45°F | 55.0°F | 3.59 | 10 | <1 | 3 | 12 h |
| April | 72°F | 53°F | 62.5°F | 2.77 | 8 | <1 | <1 | 13 h |
| May | 79°F | 62°F | 70.4°F | 2.96 | 10 | 1 | <1 | 13 h 50 min |
| June | 85°F | 70°F | 77.5°F | 4.07 | 11 | 4 | <1 | 14 h 20 min |
| July | 88°F | 74°F | 80.6°F | 5.40 | 13 | 8 | <1 | 14 h 10 min |
| August | 87°F | 73°F | 79.5°F | 6.25 | 12 | 6 | <1 | 13 h 30 min |
| September | 83°F | 68°F | 75.5°F | 6.65 | 11 | 2 | <1 | 12 h 30 min |
| October | 76°F | 56°F | 66.0°F | 4.20 | 9 | <1 | <1 | 11 h 20 min |
| November | 66°F | 46°F | 56.0°F | 3.29 | 9 | <1 | 3 | 10 h 30 min |
| December | 59°F | 40°F | 49.6°F | 3.10 | 10 | <1 | 9 | 10 h |
| Year (annual) | 73°F | 55°F | 64.0°F | 48.47 | 122 | 21 | 34 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 3°C | 7.9°C | 76 mm |
| February | 15°C | 4°C | 9.4°C | 81 mm |
| March | 18°C | 7°C | 12.8°C | 91 mm |
| April | 22°C | 12°C | 16.9°C | 70 mm |
| May | 26°C | 17°C | 21.3°C | 75 mm |
| June | 29°C | 21°C | 25.3°C | 103 mm |
| July | 31°C | 23°C | 27.0°C | 137 mm |
| August | 30°C | 23°C | 26.4°C | 159 mm |
| September | 28°C | 20°C | 24.2°C | 169 mm |
| October | 24°C | 13°C | 18.9°C | 107 mm |
| November | 19°C | 8°C | 13.3°C | 84 mm |
| December | 15°C | 4°C | 9.8°C | 79 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Longwood (17 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093718; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Myrtle Beach?
Normal highs sit between 65°F and 85°F in April, May, June, September, October and November. Of those, April has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093718.
When is the last frost in Myrtle Beach?
In Myrtle Beach, the last spring frost (32°F) comes after March 13 in half of years and after March 31 in one year in ten; the first autumn frost comes before November 20 in half of years and before November 4 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 131 year in 10 after March 31; 9 in 10 after February 20
- First autumn frost, half of years before
- November 201 year in 10 before November 4; 9 in 10 before December 16
NOAA puts the median frost-free season at 255 days, and the season without a hard freeze (28°F) at 287 days.
A hard freeze (28°F) comes after February 26 in half of springs and before December 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Myrtle Beach in zone 8b across its 2 ZIP code areas (8b in 29577, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Myrtle Beach's NOAA station is in zone 8b: the coldest night of a typical year reaches 19°F (21 complete years).
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00093718; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Myrtle Beach ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Myrtle Beach's 2 ZIP code areas are all in zone 8b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Myrtle Beach?
In a normal year in Myrtle Beach, 21 days a year reach 90°F, 34 nights fall to 32°F or colder and 122 days bring measurable precipitation.
- Days at 90°F or more
- 21a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 34a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 122a normal year
The highest temperature in Myrtle Beach's official record (kept by the National Weather Service since 1931) is 104°F, on June 26, 1952; the lowest is 9°F, on February 18, 1958.
The wettest calendar year on that record is 1964, with 71.98 in; the snowiest season is 1989–90, with 14.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093718; records: ACIS (NOAA Regional Climate Centers), NWS threaded record CREthr. Records use complete months only; a month missing more than three days is left out.
How sunny is Myrtle Beach?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Myrtle Beach, 4.6 kWh per square metre a day. June is the sunniest month (84%) and February the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.7 |
| February | 72% | 3.4 |
| March | 76% | 4.5 |
| April | 83% | 5.9 |
| May | 83% | 6.4 |
| June | 84% | 6.5 |
| July | 84% | 6.3 |
| August | 81% | 5.6 |
| September | 79% | 4.8 |
| October | 80% | 4.0 |
| November | 78% | 3.0 |
| December | 74% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Myrtle Beach need?
A normal year in Myrtle Beach brings 2,343 heating degree days, 56% fewer than the median U.S. place (5,373), and 2,003 cooling degree days, 2.2 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,640 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 583 | 1 |
| February | 452 | 1 |
| March | 317 | 9 |
| April | 123 | 50 |
| May | 20 | 188 |
| June | 0 | 377 |
| July | 0 | 485 |
| August | 0 | 450 |
| September | 3 | 317 |
| October | 79 | 109 |
| November | 286 | 16 |
| December | 479 | 3 |
| Year (annual) | 2,343 | 2,003 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093718. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Myrtle Beach been warmer than normal lately?
2025 averaged 64.1°F, 0.1°F above the 1991-2020 normal of 64.0°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.3°F | +0.3°F | 44.84 |
| 2022 | 64.2°F | +0.2°F | 46.27 |
| 2023 | 65.0°F | +1.0°F | 44.95 |
| 2024 | 65.7°F | +1.7°F | 46.27 |
| 2025 | 64.1°F | +0.1°F | 47.91 |
Source: observed years: ACIS, station USW00093718. A year counts only with all twelve months complete.
How does Myrtle Beach's climate compare?
Myrtle Beach is warmer than 51 of the other 72 places with their own NOAA record in South Carolina, and wetter than 28. Across the 7,247 U.S. stations with normals, its annual mean of 64.0°F is warmer than 85%.
In the Köppen classification computed from these normals, Myrtle Beach is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Myrtle Beach share this climate record?
6 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- North Myrtle Beach, SC20,798 people · 1 mi NE
- Carolina Shores, NC5,463 people · 11 mi NE
- Sunset Beach, NC4,521 people · 14 mi NE
- Calabash, NC2,975 people · 12 mi NE
- Briarcliffe Acres, SC568 people · 2 mi SW
- Atlantic Beach, SC418 people · 1 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Myrtle Beach's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Myrtle Beach. This page uses North Myrtle Beach; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Myrtle Beach station USC00386153 | 5 mi NE | 39 ft | 62.4°F | 34°F | 87°F | 53.6 | – | March 21 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Myrtle Beach's climate
What is the coldest month in Myrtle Beach?
January, with a normal high of 56°F and a normal low of 37°F. The warmest is July (88°F by day, 74°F at night).
Does it snow in Myrtle Beach?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Myrtle Beach's NOAA station; the nearest record that keeps one, Longwood (17 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Myrtle Beach?
September, with 6.65 in of precipitation in a normal year; the driest is April with 2.77 in.
What plant hardiness zone is Myrtle Beach in?
The USDA's 2023 map puts Myrtle Beach in zone 8b across its 2 ZIP code areas (8b in 29577, the largest). By the same method at Myrtle Beach's NOAA station, the coldest night of a typical year reaches 19°F (21 years, 1991-2020): zone 8b.
How late can frost come in Myrtle Beach?
In half of years the last 32°F night comes after March 13; in one year in ten it comes after March 31. Waiting until March 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Myrtle Beach in OctoberThis month day by day, its records and recent years
- South Carolina climateThe statewide normals and every place in the state
- Longwood, NC17 miles from this station, 62.6°F a year
- Conway, SC19 miles from this station, 64.5°F a year
- Shallotte, NC21 miles from this station, 63.4°F a year
- Brookgreen Gardens, SC29 miles from this station, 63.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made