Myrtle Beach, SC Water Temperature Climatology

Water Temperature Climatology, Myrtle Beach, SC

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Latest Water Temp

86°

Myrtle Beach, located in Horry County, is a part of South Carolina's Grand Strand. From June through early October water temperatures are practically tropical making this area perfect for swimming and beach activities. The water cools significantly during the winter months due to cold offshore winds and longer nights. Water temperatures here tend to be both hotter during the summer and cooler during the winter than at Wrightsville Beach, probably due to shallower water depth atop the broad continental shelf. Other beach communities of Horry and Georgetown counties should have very similar water temperatures including Little River, North Myrtle Beach, Surfside Beach, Murrells Inlet, Litchfield Beach, and Pawleys Island.

Average Water Temperatures for Myrtle Beach, SC

January			February			March			April			May			June
1-10	11-20	21-31	1-10	11-20	21-29	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31	1-10	11-20	21-30
52	50	49	50	50	51	53	54	59	61	64	67	70	73	76	79	81	82

July			August			September			October			November			December
1-10	11-20	21-31	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31
83	84	84	83	83	83	83	81	79	77	73	69	65	62	60	57	55	54

Average values are given for early (1st-10th), mid (11th-20th), and late (21st-31st) each month.

Detailed Water Temperature Statistics for Myrtle Beach, SC

Box and Whisker statistical plot. Colored boxes indicate the 25th through 75th percentiles, with the red/blue center of each box indicating the mean (average) value. The black whiskers indicate the highest and lowest temperatures ever observed during each roughly 10 day time period throughout the year.

Statistical table of water temperature data. In addition to mean, highest and lowest values for each time period, various percentiles are displayed.

		January			February			March			April			May			June
	1-10	11-20	21-31	1-10	11-20	21-29	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31	1-10	11-20	21-30
Highest	64.2	57.7	57.2	57.0	56.5	58.3	62.6	65.5	71.1	70.2	70.0	76.3	78.6	82.2	82.9	88.0	88.0	87.8
Upper 0.1%	63.9	57.2	56.5	56.8	56.5	57.7	61.3	64.2	66.6	69.8	69.6	75.2	77.9	81.1	81.9	87.3	87.4	87.6
Upper 1%	63.3	56.1	55.2	56.3	56.1	56.8	60.8	62.6	65.2	68.4	68.5	72.9	75.9	78.8	80.4	86.2	86.4	86.4
Upper 5%	58.6	55.8	54.5	55.6	55.2	55.8	59.7	60.8	63.1	66.9	67.6	71.2	74.7	77.0	79.2	84.0	85.3	84.9
Upper 10%	57.6	54.9	53.2	53.8	54.0	55.4	58.6	59.9	62.6	64.9	66.7	70.5	74.3	75.9	78.4	81.3	83.8	84.4
Upper 25%	54.1	54.0	51.3	51.4	52.7	53.6	56.1	58.6	60.6	63.3	65.7	68.9	72.5	74.7	77.4	80.1	82.2	83.5
MEAN	51.9	50.4	49.2	50.0	50.3	51.3	53.3	55.8	58.5	61.2	64.0	67.0	70.3	72.6	75.7	79.0	81.0	81.9
Lower 25%	50.2	48.0	47.3	47.7	47.8	50.0	50.4	53.6	55.8	59.2	62.2	65.7	68.2	71.1	74.3	77.5	79.5	80.2
Lower 10%	45.0	43.0	44.2	46.6	46.0	46.2	46.9	51.4	54.3	57.0	61.2	63.0	65.8	68.9	72.0	76.6	78.4	79.0
Lower 5%	44.8	42.4	43.9	46.0	45.7	44.6	46.4	50.9	53.6	56.3	60.3	61.7	64.9	66.7	71.2	75.9	78.1	78.4
Lower 1%	43.2	41.5	43.2	45.5	45.1	44.1	44.6	48.6	52.7	55.4	57.7	60.1	64.0	65.5	70.0	74.8	77.5	77.7
Lower 0.1%	42.3	41.0	42.4	44.6	43.9	43.7	44.2	47.5	52.0	55.2	56.5	58.6	63.1	65.1	69.4	71.2	75.7	77.0
Lowest	42.3	41.0	42.3	43.5	43.7	43.7	44.2	47.5	49.8	54.9	56.5	57.4	62.4	65.1	69.1	70.7	74.5	75.7

		July			August			September			October			November			December		ANNUAL
	1-10	11-20	21-31	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31	1-10	11-20	21-30	1-10	11-20	21-31
Highest	87.8	87.6	89.6	90.5	87.8	89.1	88.3	87.6	83.7	82.0	79.5	75.6	74.3	70.3	65.7	64.2	63.9	68.0	90.5
Upper 0.1%	87.4	87.3	89.1	90.1	87.8	88.2	88.0	87.4	83.5	81.9	79.0	74.1	73.9	70.0	65.5	64.0	63.9	67.6	88.3
Upper 1%	86.5	86.9	87.8	89.1	87.4	86.7	87.4	86.7	82.9	81.3	77.5	72.7	72.9	69.4	64.8	63.3	63.0	65.1	86.5
Upper 5%	85.8	86.4	86.9	87.3	86.7	85.8	85.8	86.0	81.9	79.7	77.0	72.0	70.9	67.5	63.3	60.8	61.2	61.0	84.6
Upper 10%	85.3	86.0	86.0	86.0	85.8	85.5	84.9	83.7	81.1	79.2	75.6	71.1	70.2	65.8	62.6	60.1	57.7	57.6	83.5
Upper 25%	84.0	84.9	84.6	84.4	84.7	84.6	83.7	82.4	79.9	78.3	73.9	70.3	67.3	63.5	61.7	58.6	56.5	55.4	80.1
MEAN	82.5	83.6	83.5	83.4	83.4	83.0	82.5	80.8	78.6	76.5	72.8	68.9	65.2	62.1	59.5	56.9	54.6	53.7	67.3
Lower 25%	81.1	82.6	82.6	81.9	82.8	81.7	81.1	78.6	77.4	74.7	71.6	67.8	62.8	60.4	57.4	55.2	53.1	52.2	55.4
Lower 10%	79.7	81.5	81.0	81.1	80.8	80.2	79.7	77.2	75.4	73.4	70.3	65.5	61.7	59.0	55.6	53.8	50.7	50.0	50.7
Lower 5%	79.0	80.6	79.7	80.8	77.4	79.3	79.2	76.1	74.8	72.9	69.3	64.6	60.8	58.3	55.0	52.9	46.9	45.1	48.0
Lower 1%	77.4	79.2	77.7	79.5	75.9	78.6	78.1	75.6	74.1	72.1	68.0	63.9	59.2	57.0	54.3	50.9	45.5	43.3	44.2
Lower 0.1%	77.2	78.6	77.5	78.4	75.7	78.3	77.5	75.4	73.6	71.8	66.9	63.1	58.6	55.9	53.4	49.6	45.2	43.0	42.3
Lowest	77.0	78.6	77.5	78.3	75.6	78.1	77.5	75.2	73.4	71.1	66.7	63.0	58.5	55.6	52.7	49.3	45.0	42.6	41.0

After quality control, a total of 920,078 individual water temperature observations were available to calculate the values used in this climatology. Data was collected from the NOAA/NOS weather and tide station on Springmaid Pier over the period 2005 through 2025.

Springmaid Pier and the weather station were destroyed by Hurricane Matthew on October 8, 2016. Water temperature data from the new station became available in November 2023. Historic weather and tide data for this site is available here.

Final weather and tide data from Springmaid Pier in Myrtle Beach, SC as Hurricane Matthew struck.

Final weather and tide data from Springmaid Pier in Myrtle Beach, SC as Hurricane Matthew struck in October 2016. Large crashing waves destroyed the pier and the weather station.

Page Author and Statistical Analysis: Tim Armstrong
Page Created: July 31, 2014
Last Updated: July 4, 2025