Edisto Beach, South Carolina climate: Normal weather by month, frost dates and records
Edisto Beach's normal year runs from 39°F January nights to 89°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.6°C, January lows of 4°C, July highs of 31°C.
- NOAA stationEdisto Beach State Park
- Station IDUSC00382730
- Location32.51°N 80.29°W
- Elevation5 ft (2 m)
- Population1,060
On October 14, the normal high in Edisto Beach is 78°F and the normal low 59°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Edisto Beach.
- Jan 57° 39°
- Feb 60° 42°
- Mar 66° 47°
- Apr 73° 55°
- May 80° 64°
- Jun 86° 72°
- Jul 89° 75°
- Aug 89° 73°
- Sep 85° 68°
- Oct 77° 58°
- Nov 68° 48°
- Dec 60° 43°
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 Edisto Beach each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 39°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 57°F | 39°F | 48.2°F | – | <1 | 7 | 10 h 10 min |
| February | 60°F | 42°F | 50.9°F | – | <1 | 3 | 11 h |
| March | 66°F | 47°F | 56.4°F | – | <1 | 1 | 12 h |
| April | 73°F | 55°F | 63.9°F | – | <1 | <1 | 13 h |
| May | 80°F | 64°F | 72.0°F | – | 1 | <1 | 13 h 50 min |
| June | 86°F | 72°F | 78.6°F | – | 8 | <1 | 14 h 20 min |
| July | 89°F | 75°F | 81.6°F | – | 15 | <1 | 14 h 10 min |
| August | 89°F | 73°F | 81.0°F | – | 14 | <1 | 13 h 20 min |
| September | 85°F | 68°F | 76.5°F | – | 3 | <1 | 12 h 20 min |
| October | 77°F | 58°F | 67.7°F | – | <1 | <1 | 11 h 30 min |
| November | 68°F | 48°F | 57.9°F | – | <1 | 1 | 10 h 30 min |
| December | 60°F | 43°F | 51.2°F | – | <1 | 3 | 10 h |
| Year (annual) | 74°F | 57°F | 65.5°F | – | 42 | 15 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 14°C | 4°C | 9.0°C |
| February | 16°C | 5°C | 10.5°C |
| March | 19°C | 8°C | 13.6°C |
| April | 23°C | 13°C | 17.7°C |
| May | 27°C | 18°C | 22.2°C |
| June | 30°C | 22°C | 25.9°C |
| July | 31°C | 24°C | 27.6°C |
| August | 31°C | 23°C | 27.2°C |
| September | 29°C | 20°C | 24.7°C |
| October | 25°C | 14°C | 19.8°C |
| November | 20°C | 9°C | 14.4°C |
| December | 15°C | 6°C | 10.7°C |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00382730; 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 Edisto Beach?
Normal highs sit between 65°F and 85°F in March, April, May, September, October and November.
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 USC00382730.
When is the last frost in Edisto Beach?
In Edisto Beach, the last spring frost (32°F) comes after March 1 in half of years and after March 21 in one year in ten; the first autumn frost comes before December 6 in half of years and before November 15 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 11 year in 10 after March 21; 9 in 10 after February 1
- First autumn frost, half of years before
- December 61 year in 10 before November 15; 9 in 10 before January 4
NOAA puts the median frost-free season at 280 days, and the season without a hard freeze (28°F) at 313 days.
A hard freeze (28°F) comes after February 11 in half of springs and before December 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Edisto Beach in zone 9a in ZIP code 29438, the nearest ZIP area.
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00382730; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Edisto Beach?
In a normal year in Edisto Beach, 42 days a year reach 90°F (1 of them 100°F or more) and 15 nights fall to 32°F or colder.
- Days at 90°F or more
- 42a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 15a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00382730.
How sunny is Edisto Beach?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Edisto Beach, 4.8 kWh per square metre a day. July is the sunniest month (84%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 3.0 |
| February | 75% | 3.6 |
| March | 78% | 4.8 |
| April | 84% | 6.1 |
| May | 84% | 6.5 |
| June | 83% | 6.5 |
| July | 84% | 6.4 |
| August | 82% | 5.7 |
| September | 80% | 4.9 |
| October | 82% | 4.2 |
| November | 81% | 3.3 |
| December | 76% | 2.6 |
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 Edisto Beach need?
A normal year in Edisto Beach brings 2,015 heating degree days, 62% fewer than the median U.S. place (5,373), and 2,217 cooling degree days, 2.4 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,990 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 521 | 0 |
| February | 395 | 1 |
| March | 274 | 8 |
| April | 94 | 60 |
| May | 15 | 232 |
| June | 1 | 407 |
| July | 0 | 513 |
| August | 0 | 494 |
| September | 1 | 346 |
| October | 52 | 134 |
| November | 230 | 18 |
| December | 431 | 3 |
| Year (annual) | 2,015 | 2,217 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00382730. 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.
How does Edisto Beach's climate compare?
Edisto Beach is warmer than 67 of the other 72 places with their own NOAA record in South Carolina. Across the 7,247 U.S. stations with normals, its annual mean of 65.5°F is warmer than 89%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Edisto Beach share this climate record?
2 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.
- Seabrook Island, SC2,135 people · 8 mi NE
- Harbor Island, SC310 people · 11 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Edisto Beach's climate
What is the coldest month in Edisto Beach?
January, with a normal high of 57°F and a normal low of 39°F. The warmest is July (89°F by day, 75°F at night).
What plant hardiness zone is Edisto Beach in?
The USDA's 2023 map puts Edisto Beach in zone 9a in ZIP code 29438, the nearest ZIP area.
How late can frost come in Edisto Beach?
In half of years the last 32°F night comes after March 1; in one year in ten it comes after March 21. Waiting until March 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- South Carolina climateThe statewide normals and every place in the state
- Edisto Island Middleton Plantation, SC7 miles from this station, 66.7°F a year
- Beaufort Wastewater Treatment Plant, SC25 miles from this station, 67.8°F a year
- Beaufort, SC25 miles from this station, 67.2°F a year
- Charleston City, SC29 miles from this station, 67.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made