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October Weather in Myrtle Beach South Carolina, United States

Daily high temperatures decrease by 8°F, from 78°F to 70°F, rarely falling below 61°F or exceeding 85°F.

Daily low temperatures decrease by 11°F, from 63°F to 53°F, rarely falling below 40°F or exceeding 72°F.

For reference, on July 20, the hottest day of the year, temperatures in Myrtle Beach typically range from 75°F to 88°F, while on January 29, the coldest day of the year, they range from 39°F to 56°F.

Average High and Low Temperature in October in Myrtle Beach

Average High and Low Temperature in October in Myrtle BeachOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313130°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FSepNovOct 178°FOct 178°F63°F63°FOct 3170°FOct 3170°F53°F53°FOct 1176°FOct 1176°F59°F59°FOct 2173°FOct 2173°F56°F56°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in October in Myrtle Beach

Average Hourly Temperature in October in Myrtle BeachOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSepNovcoldcoldcoolcomfortablewarmwarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Çırtıman, Turkey (6,040 miles away); Behshahr, Iran (6,697 miles); and Miyazaki, Japan (7,502 miles) are the far-away foreign places with temperatures most similar to Myrtle Beach (view comparison).

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The month of October in Myrtle Beach experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 37% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 34% on October 26.

The clearest day of the month is October 26, with clear, mostly clear, or partly cloudy conditions 66% of the time.

For reference, on July 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on October 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%.

Cloud Cover Categories in October in Myrtle Beach

Cloud Cover Categories in October in Myrtle BeachOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNovJul 2644%Jul 2644%Oct 161%Oct 161%Oct 3164%Oct 3164%Oct 1164%Oct 1164%Oct 2164%Oct 2164%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Myrtle Beach, the chance of a wet day over the course of October is very rapidly decreasing, starting the month at 31% and ending it at 21%.

For reference, the year's highest daily chance of a wet day is 53% on July 24, and its lowest chance is 21% on October 29.

Probability of Precipitation in October in Myrtle Beach

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during October in Myrtle Beach is rapidly decreasing, starting the month at 4.6 inches, when it rarely exceeds 9.8 inches or falls below 1.3 inches, and ending the month at 3.0 inches, when it rarely exceeds 5.8 inches or falls below 0.6 inches.

Average Monthly Rainfall in October in Myrtle Beach

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of October in Myrtle Beach, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 59 minutes, implying an average daily decrease of 1 minute, 59 seconds, and weekly decrease of 13 minutes, 51 seconds.

The shortest day of the month is October 31, with 10 hours, 49 minutes of daylight and the longest day is October 1, with 11 hours, 49 minutes of daylight.

Hours of Daylight and Twilight in October in Myrtle Beach

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Myrtle Beach is 7:10 AM on October 1 and the latest sunrise is 24 minutes later at 7:34 AM on October 31.

The latest sunset is 6:59 PM on October 1 and the earliest sunset is 35 minutes earlier at 6:23 PM on October 31.

Daylight saving time is observed in Myrtle Beach during 2024, but it neither starts nor ends during October, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:05 AM and sets 14 hours, 24 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:16 AM and sets 9 hours, 55 minutes later, at 5:11 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in October in Myrtle Beach

Sunrise & Sunset with Twilight and Daylight Saving Time in October in Myrtle BeachOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSepNov7:10 AM7:10 AMOct 16:59 PMOct 16:59 PM7:34 AM7:34 AMOct 316:23 PMOct 316:23 PM7:17 AM7:17 AMOct 116:46 PMOct 116:46 PM7:25 AM7:25 AMOct 216:33 PMOct 216:33 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of October. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in October in Myrtle Beach

Solar Elevation and Azimuth in October in Myrtle BeachOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSepNov001010202020303040405000010102020303030405060
northeastsouthwest
Solar elevation and azimuth over the course of October 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for October 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in October in Myrtle Beach

Moon Rise, Set & Phases in October in Myrtle BeachOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PMOct 22:50 PMOct 22:50 PMOct 177:27 AMOct 177:27 AMNov 18:48 AMNov 18:48 AMNov 154:29 PMNov 154:29 PM6:16 AM6:16 AM7:41 PM7:41 PM7:14 PM7:14 PM7:29 AM7:29 AM6:58 AM6:58 AM6:56 PM6:56 PM6:10 PM6:10 PM7:28 AM7:28 AM7:40 AM7:40 AM6:18 PM6:18 PM4:52 PM4:52 PM7:46 AM7:46 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Oct 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
1%6:03 AME6:33 PMW-12:20 PMS252,333 mi
2
0%6:58 AME6:56 PMW-12:58 PMS252,595 mi
3
1%7:53 AME7:20 PMWSW-1:37 PMS252,427 mi
4
4%8:49 AMESE7:46 PMWSW-2:18 PMS251,819 mi
5
8%9:47 AMESE8:15 PMWSW-3:01 PMS250,744 mi
6
14%10:47 AMESE8:50 PMWSW-3:48 PMS249,163 mi
7
22%11:47 AMESE9:31 PMWSW-4:39 PMS247,045 mi
8
31%12:48 PMSE10:20 PMSW-5:33 PMS244,384 mi
9
41%1:45 PMSE11:16 PMSW-6:31 PMS241,218 mi
10
50%2:37 PMESE--7:29 PMS237,653 mi
11
63%-12:20 AMWSW3:22 PMESE8:26 PMS233,873 mi
12
74%-1:29 AMWSW4:02 PMESE9:21 PMS230,135 mi
13
84%-2:40 AMWSW4:37 PMESE10:13 PMS226,756 mi
14
92%-3:51 AMWSW5:09 PME11:04 PMS224,076 mi
15
97%-5:02 AMW5:39 PME11:55 PMS222,401 mi
16
99%-6:14 AMW6:10 PME--
17
100%-7:28 AMWNW6:44 PMENE12:46 AMS221,952 mi
18
99%-8:43 AMWNW7:21 PMENE1:39 AMS222,813 mi
19
95%-9:59 AMWNW8:05 PMENE2:36 AMS224,906 mi
20
89%-11:13 AMWNW8:56 PMNE3:36 AMS228,003 mi
21
80%-12:21 PMNW9:53 PMNE4:37 AMS231,772 mi
22
70%-1:20 PMNW10:56 PMNE5:38 AMS235,833 mi
23
59%-2:09 PMWNW-6:35 AMS239,833 mi
24
50%12:00 AMENE2:49 PMWNW-7:28 AMS243,486 mi
25
38%1:03 AMENE3:22 PMWNW-8:16 AMS246,594 mi
26
29%2:04 AMENE3:50 PMWNW-9:00 AMS249,048 mi
27
21%3:01 AMENE4:15 PMW-9:41 AMS250,808 mi
28
13%3:57 AME4:38 PMW-10:20 AMS251,891 mi
29
7%4:52 AME5:01 PMW-10:58 AMS252,350 mi
30
3%5:47 AME5:24 PMW-11:36 AMS252,261 mi
31
1%6:43 AMESE5:50 PMWSW-12:17 PMS251,702 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Myrtle Beach is very rapidly decreasing during October, falling from 40% to 12% over the course of the month.

For reference, on July 21, the muggiest day of the year, there are muggy conditions 95% of the time, while on January 21, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in October in Myrtle Beach

Humidity Comfort Levels in October in Myrtle BeachOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SepNovOct 140%Oct 140%Oct 3112%Oct 3112%Oct 1127%Oct 1127%Oct 2118%Oct 2118%oppressiveoppressivemuggymuggyhumidhumiddrydrymiserablemiserablecomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Myrtle Beach is essentially constant during October, remaining within 0.2 miles per hour of 10.1 miles per hour throughout.

For reference, on February 26, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on August 8, the calmest day of the year, the daily average wind speed is 8.3 miles per hour.

Average Wind Speed in October in Myrtle Beach

Average Wind Speed in October in Myrtle BeachOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphSepNovOct 19.9 mphOct 19.9 mphOct 3110.2 mphOct 3110.2 mphOct 1110.1 mphOct 1110.1 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Myrtle Beach throughout October is predominantly from the north, with a peak proportion of 39% on October 29.

Wind Direction in October in Myrtle Beach

Wind Direction in October in Myrtle BeachENOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%SepNovwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Myrtle Beach is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Myrtle Beach is decreasing during October, falling by 6°F, from 78°F to 72°F, over the course of the month.

Average Water Temperature in October in Myrtle Beach

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Myrtle Beach typically lasts for 8.7 months (268 days), from around March 7 to around November 29, rarely starting before February 8 or after March 29, and rarely ending before November 9 or after December 24.

The month of October in Myrtle Beach is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in October in Myrtle Beach

Time Spent in Various Temperature Bands and the Growing Season in October in Myrtle Beachgrowing seasonOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNov100%Oct 16100%Oct 1650%Nov 2950%Nov 2990%Nov 990%Nov 9very coldcoldcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Myrtle Beach are rapidly increasing during October, increasing by 475°F, from 4,921°F to 5,396°F, over the course of the month.

Growing Degree Days in October in Myrtle Beach

The average growing degree days accumulated over the course of October, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Myrtle Beach is gradually decreasing during October, falling by 0.9 kWh, from 4.7 kWh to 3.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in October in Myrtle Beach

Average Daily Incident Shortwave Solar Energy in October in Myrtle BeachOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhSepNovOct 14.7 kWhOct 14.7 kWhOct 313.8 kWhOct 313.8 kWhOct 114.5 kWhOct 114.5 kWhOct 214.1 kWhOct 214.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Myrtle Beach are 33.689 deg latitude, -78.887 deg longitude, and 23 ft elevation.

The topography within 2 miles of Myrtle Beach is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 11 feet. Within 10 miles is also essentially flat (56 feet). Within 50 miles is essentially flat (266 feet).

The area within 2 miles of Myrtle Beach is covered by artificial surfaces (57%) and water (41%), within 10 miles by water (46%) and artificial surfaces (26%), and within 50 miles by water (42%) and trees (31%).

This report illustrates the typical weather in Myrtle Beach, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Myrtle Beach.

For each station, the records are corrected for the elevation difference between that station and Myrtle Beach according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Myrtle Beach is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Myrtle Beach and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Myrtle Beach and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.