Myrtle Beach — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Myrtle Beach (South Carolina, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Myrtle Beach help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Myrtle Beach in the Atlantic Ocean today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Myrtle Beach has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Myrtle Beach will be 19.4°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| APR 10 | 18.5°C | 17.8°C | |
| APR 11 | 17.7°C | 17.5°C | |
| APR 12 | 17.3°C | 18.0°C | |
| APR 13 | 16.8°C | 17.5°C | |
| APR 14 | 17.2°C | 18.0°C | |
| APR 15 | 17.7°C | 18.0°C | |
| APR 16 | 18.0°C | 18.8°C | |
| APR 17 | 18.6°C | 18.5°C | |
| APR 18 | 19.0°C | 18.5°C | 19.0°C |
| APR 19 | 19.3°C | 19.1°C | |
| APR 20 | 19.0°C | 19.1°C | |
| APR 21 | 19.0°C | 19.2°C | |
| APR 22 | 19.3°C | 19.2°C | |
| APR 23 | 19.3°C | 19.3°C | |
| APR 24 | 19.5°C | 19.3°C | |
| APR 25 | 19.5°C | 19.4°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Myrtle Beach, on the South Carolina Atlantic coast, offers a long stretch of sandy shoreline where the ocean temperature follows a clear seasonal pattern. During winter months water temperatures generally drop to about 11–15 °C, making swimming brisk for most visitors. In spring the ocean gradually warms to roughly 13–20 °C as air temperatures rise and sunlight increases. Summer brings the warmest conditions, with sea temperatures commonly between 23–29 °C, peaking in July and August and providing the most comfortable swimming conditions. In autumn the water cools again to around 18–24 °C, often staying pleasant through September before steady cooling later in the season. These ranges can vary year to year with weather patterns, and short-term cold snaps or warm spells occasionally shift the numbers a few degrees.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 11°C | 14°C | 19°C |
| February | 10°C | 14°C | 19°C |
| March | 12°C | 15°C | 19°C |
| April | 14°C | 19°C | 23°C |
| May | 19°C | 22°C | 26°C |
| June | 20°C | 26°C | 29°C |
| July | 25°C | 28°C | 30°C |
| August | 26°C | 28°C | 30°C |
| September | 24°C | 27°C | 30°C |
| October | 19°C | 24°C | 27°C |
| November | 14°C | 19°C | 24°C |
| December | 11°C | 15°C | 21°C |
* Click on a month to view detailed water temperature data.
Myrtle Beach: Weather Forecast
April 18
April 19
April 20
April 21
April 22
Location, Beaches & Local Information
Nearby Beaches & Facilities
Myrtle Beach
Myrtle Beach Boardwalk
Withers Swash
Hurl Rocks Park
The Golden Mile
40th Ave N Surf Area
Gardens By The Sea
Horry County Beach Springmaid Beach
Midway Swash
Swimming Conditions
Swimming and beach recreation at Myrtle Beach are built around those seasonal temperatures. The summer months are ideal for casual swimming, families with children, and a full range of water sports, while shoulder seasons may require a light wetsuit for longer swims or more active pursuits. Many public beaches have lifeguards during peak season and a wide selection of access points, making entry to the water straightforward, but swimmers should remain aware of changing conditions such as rip currents, surf height, and occasional marine life like jellyfish. Water quality is monitored regularly, and visitors seeking quieter experiences can find less crowded stretches or explore calm inlets and protected areas nearby.