Myrtle Beach Lagoon — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Myrtle Beach Lagoon, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Myrtle Beach Lagoon today is 19.2°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 26 | 19.9°C | 23.5°C | |
| OCT 27 | 20.1°C | 23.5°C | |
| OCT 28 | 19.4°C | 23.5°C | |
| OCT 29 | 19.4°C | 23.5°C | |
| OCT 30 | 18.9°C | 23.5°C | |
| OCT 31 | 18.9°C | 23.5°C | |
| NOV 1 | 19.5°C | 15.7°C | |
| NOV 2 | 19.2°C | 15.7°C | |
| NOV 3 | 15.7°C | 19.0°C | |
| NOV 4 | 15.7°C | 18.9°C | |
| NOV 5 | 15.7°C | 18.7°C | |
| NOV 6 | 15.7°C | 18.5°C | |
| NOV 7 | 15.7°C | 18.3°C | |
| NOV 8 | 15.7°C | 18.2°C | |
| NOV 9 | 15.7°C | 18.0°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.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 6°C | 11°C | 16°C |
| February | 4°C | 10°C | 16°C |
| March | 8°C | 15°C | 21°C |
| April | 14°C | 18°C | 23°C |
| May | 19°C | 24°C | 29°C |
| June | 21°C | 27°C | 32°C |
| July | 22°C | 28°C | 34°C |
| August | 24°C | 29°C | 34°C |
| September | 23°C | 28°C | 32°C |
| October | 19°C | 24°C | 28°C |
| November | 11°C | 16°C | 20°C |
| December | 7°C | 11°C | 15°C |
Myrtle Beach Lagoon: Water Temperature by Location
Myrtle Beach Lagoon: Weather Forecast
November 3
November 4
November 5
November 6
November 7
Location & Local Information
The lagoons and small lake-like estuaries in the Myrtle Beach area of South Carolina experience a noticeable seasonal swing in water temperature. In winter (December–February) surface temperatures commonly sit around 50–60°F (10–16°C). Spring (March–May) brings a steady rise, typically into the 60–70°F range (16–21°C). Summer (June–August) is the warmest period, with waters often reaching 75–85°F (24–29°C) or slightly higher on hot, calm days. In fall (September–November) temperatures generally cool from the low 70s down into the mid-to-high 60s °F (21–18°C), depending on storms and cold fronts. Because these are shallow, sheltered bodies connected to tidal creeks and the ocean, short-term fluctuations with weather, freshwater runoff, and tidal exchange are common.
Swimming is allowed in many public beach and park access areas, and the warm summer temperatures make recreational swimming comfortable during that season. However, not all lagoons or lakes are open for bathing: some are privately owned, designated for wildlife habitat, or subject to advisories due to poor water quality, strong currents near inlets, submerged vegetation, or lack of lifeguards. For safety and environmental reasons it’s best to use designated swimming areas, heed posted signs and local advisories, and be mindful that cooler months may be uncomfortable or unsafe for prolonged exposure.