Comfortable Climate Year Round
Mild temperatures and gentle ocean breezes make the Grand Strand an ideal vacation destination any time of the year.
Average Temperature Highs and Average Monthly Precipitation
(Water and air temperatures based on 30 years of data; in degrees Fahrenheit)
| Month |
Air |
Water |
Precipitation |
| January |
57° |
51° |
4.70" |
| February |
60° |
52° |
3.53" |
| March |
66° |
57° |
4.22" |
| April |
75° |
62° |
3.10" |
| May |
82° |
69° |
4.01" |
| June |
87° |
77° |
4.96" |
| July |
90° |
81° |
5.89" |
| August |
89° |
83° |
6.43" |
| September |
84° |
80° |
6.44" |
| October |
76° |
73° |
3.95" |
| November |
68° |
65° |
3.25" |
| December |
59° |
55° |
4.20" |
| Updated April 2006 |
Ocean Water
The health and safety of residents and visitors is of the highest importance to each of the local governments in the Myrtle Beach area. To ensure that our beach water is clean and safe, a water-monitoring program is in place. The program meets Environmental Protection Agency standards, established in cooperation with the South Carolina Department of Health and Environmental Control. The surf is tested regularly at 20 sites along the coastline. If contaminants are detected, a swimming advisory is posted in the affected area. The possibility of pollutants in ocean water is greatest after a heavy rain, when runoff from lawns and streets may flush out trash, fertilizer, or pesticides. Swimming immediately after a rainstorm or in water discharging from storm drainage pipes should be avoided. Swimming in contaminated water may result in minor illnesses such as sore throats or diarrhea.
Did You Know?
During the summer months, the ocean water along the Grand Strand is about 20 degrees F warmer than the ocean water along New York beaches. Over the last 30 years, the lowest temperature Grand Strand ocean water has reached is 47 degrees F (in January) and the highest is 88 degrees F (in July). Temperatures along the southern coast are usually cooler than inland areas during the summer because of the sea breeze.
Annual Weather Statistical Averages
(Water and air temperatures based on 30 years of data from the S.C. State Climatology Office; in degrees Fahrenheit)
| Sunny days |
215 |
| Overcast days |
150 |
| Frost days |
42 |
| Days when maximum temperature is more than 90 degrees |
40 |
| Days with .10 inches of rain or more |
77 |
| Average air temperature (degrees F) |
64° |
| Average water temperature (degrees F) |
66° |
| Average 1 p.m. relative humidity |
58% |
| Number of sunny days during an average summer month |
18 |
| Number of sunny days during an average winter month |
15 |
| Wettest months |
Aug. & Sep. |
| Driest months |
Apr. & Nov. |
| Hottest day (105 degrees F) |
Aug. 22, 1983 |
| Coldest day (4 degrees F) |
Jan. 21,1985 |
| Updated April 2006 |
Ocean Water Trivia
During the summer months, the ocean water along the Grand Strand is about 20°F warmer than the ocean water along New York beaches. Over the last 30 years, the lowest temperature Grand Strand ocean water has reached is 47°F (in January) and the highest is 88°F (in July).
Temperatures along the southern coast are usually cooler than inland areas during the summer because of the sea breeze.
Source: S.C.Climate Office
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