Weather in Myrtle Beach, South Carolina
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 17Overcast—81°65°
- MondayMay 18Partly Cloudy—78°67°
- TuesdayMay 19Clear—82°64°
- WednesdayMay 20Overcast—86°66°
- ThursdayMay 21Clear20%86°68°
- FridayMay 22Overcast43%83°68°
- SaturdayMay 23Overcast37%84°69°
- PM 2.5
- 10.1 μg/m³
- PM 10
- 15.8 μg/m³
- NO₂
- 0.9 μg/m³
- Ozone
- 106.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 10:25 AM
- Moonset
- 12:31 AM
- In sign
- ♊︎ Gemini
Roses open on the Piedmont edge
Myrtle Beach at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: March 9 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Peak growing season
As of May 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
July brings Myrtle Beach's warmest temperatures (~80°F mean) while January delivers the coldest (~45°F). Rainfall reaches its peak in September (6.8 inches) and drops to its lowest point in November (3.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 45° | 3.4″ | 11 |
| February | 47° | 3.8″ | 13 |
| March | 53° | 3.7″ | 12 |
| April | 61° | 3.4″ | 11 |
| May | 69° | 3.8″ | 13 |
| June | 76° | 4.8″ | 16 |
| July | 80° | 6.6″ | 22 |
| August | 78° | 6.3″ | 21 |
| September | 74° | 6.8″ | 23 |
| October | 65° | 4.1″ | 14 |
| November | 54° | 3.1″ | 10 |
| December | 47° | 3.8″ | 13 |
Regional context
Myrtle Beach falls within a humid subtropical climate region that encompasses nearby cities with similar temperature ranges, seasonal patterns, and growing conditions.
Similar climates: Charleston, SC, Columbia, SC, Greenville, SC, Rock Hill, SC, Spartanburg, SC.
Naturalist notes
Late May brings the peak migration of painted buntings through coastal South Carolina, their brilliant plumage visible in scrubland edges.
Southern magnolia trees begin their flowering cycle in late May, releasing their distinctive fragrance across the coastal plain.
Frequently asked
- When does it freeze in Myrtle Beach?
- The last spring frost in Myrtle Beach typically occurs around mid-March, while the first fall frost arrives around mid-December.
- What is the rainy season in Myrtle Beach?
- September stands as the wettest month with about 6.8 inches of rain on average; the city receives roughly 54 inches annually.
- What is the warmest month in Myrtle Beach?
- July typically brings the warmest weather, averaging about 80°F.
- What is the coldest month in Myrtle Beach?
- January typically delivers the coldest temperatures, averaging about 45°F.
- When can I start a vegetable garden in Myrtle Beach?
- Cool-season crops (peas, lettuce) can be planted around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) should wait until 1–2 weeks after.
- How many rainy days does Myrtle Beach get?
- Myrtle Beach experiences about 179 rainy days per year on average.
- What hardiness zone is Myrtle Beach?
- The USDA hardiness zone for Myrtle Beach depends on its lowest average winter temperature; use the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Myrtle Beach, South Carolina sits in a humid subtropical climate zone. January temperatures hover near 45°F while July averages 80°F — a 35°F seasonal swing.
Throughout the year, Myrtle Beach receives about 54 inches of precipitation spread over roughly 179 rainy days.
Several factors shape the local weather patterns: latitude (33.7°N), proximity to large water bodies, and elevation. These elements determine what grows here, when frost occurs, and the daily weather patterns.