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Water temperature in Mount Pleasant (SC) in September

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Is it warm enough to swim in Mount Pleasant in September? Average water temperature in Mount Pleasant in September is 81°F and therefore suitable for comfortable swimming. The warmest sea in Mount Pleasant in September is 86.5°F, and the coldest is 74.5°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mount Pleasant

Changes water temperature in Mount Pleasant in September 2025, 2024

To get an accurate forecast for the water temperature in Mount Pleasant for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mount Pleasant, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 180.4°F84.2°F80.4°F86.2°F
September 279.9°F84.9°F79.9°F86.2°F
September 378.4°F82.9°F78.4°F86°F
September 479°F80.8°F79°F86.5°F
September 579.9°F79.9°F79.2°F86.4°F
September 680.2°F79.3°F79.2°F85.6°F
September 781.3°F79.5°F78.4°F84.7°F
September 880.4°F79.3°F78.8°F84.2°F
September 979.7°F78.1°F78.1°F84.4°F
September 1079.3°F77.4°F77.4°F84.6°F
September 1177.9°F77.2°F77.2°F84.6°F
September 1277.5°F76.8°F76.8°F84.7°F
September 1377.7°F77.4°F77.4°F85.8°F
September 1477.5°F76.8°F76.8°F84.9°F
September 1576.6°F77°F76.6°F83.7°F
Day 2025 2024 Min Max
September 1676.5°F76.8°F76.5°F83.1°F
September 1776.6°F76.5°F76.5°F83.3°F
September 1877.2°F76.5°F76.5°F83.1°F
September 1977.7°F77.4°F77.4°F82.8°F
September 2078.6°F77.5°F77.5°F82.6°F
September 2178.6°F78.3°F77.9°F83.3°F
September 2277.4°F79°F77.4°F82.9°F
September 2378.8°F79.3°F76.8°F82.8°F
September 2479.5°F79.7°F76.5°F82.6°F
September 2580.2°F80.1°F76.5°F82.4°F
September 26 79°F77.4°F82.6°F
September 27 79.9°F75.9°F82.6°F
September 28 80.1°F75.9°F81.5°F
September 29 80.1°F75.9°F81.1°F
September 30 80.1°F74.5°F82.2°F
Mount Pleasant water temp chart in September

Average water temperature in Mount Pleasant in September over a decade

20152016201720182019
81°F81.3°F79.7°F83.1°F81.3°F
20202021202220232024
81.3°F81.3°F81.3°F81.3°F79°F

Mount Pleasant sea state in September

Chart comparing the height of waves in Mount Pleasant in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Mount Pleasant in September

Mount Pleasant water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Fripp Island81.5°F74.8°F86.5°F
Beaufort81.5°F75.7°F86.9°F
Hilton Head Island81.7°F76.1°F86.7°F
Pawleys Island80.6°F75°F84.7°F
Litchfield Beach80.6°F75°F84.7°F
Annieville80.6°F75°F84.9°F
Huntington Beach80.6°F75.2°F84.7°F
Murrells Inlet80.6°F75°F84.9°F
Daufuskie Island81.7°F76.1°F86.7°F
Savannah81.7°F76.3°F86.5°F

South Carolina photo gallery

  • Shem Creek, Mount Pleasant, SC. Unbelievable night sky with shimp boats in the foreground!
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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Mount Pleasant is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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