Weather in North Myrtle Beach in September 2025
Average weather
Average temperature in North Myrtle Beach in September
The temperature in September is +82°F on average, with a range between a maximum of +93°F during the day and a minimum of +57°F at night.
The average maximum temperature goes down 10% by the end of the month, compared with the beginning of the month, from +82°F to +79°F.
Is North Myrtle Beach warm or cold in September?
North Myrtle Beach is typically warm in September.
Maximum temperatures go down compared to the previous month from +84°F to +81°F. The minimum temperature also goes down from +75°F to +70°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in North Myrtle Beach:
Climate in North Myrtle Beach in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +84°F | +81°F | +73°F | ||||
| Min. temperature | ||||||
| +61°F | +52°F | +32°F | ||||
| Max. temperature | ||||||
| +97°F | +93°F | +91°F | ||||
| Rainfall | ||||||
| 182 mm | 158 mm | 98 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 2 m/s | ||||
| Humidity | ||||||
| 81% | 79% | 76% | ||||
| Air pressure | ||||||
| 1015 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 5 | 8 | 13 | ||||
| Cloudy days | ||||||
| 3 | 4 | 6 | ||||
| Rainy days | ||||||
| 22 | 18 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +84°F in the day, the average maximum temperature lowers to +81°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 182 mm to 158 mm. It feels drier, as humidity decreases from 81% to 79%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in September, from 5 to 8.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in North Myrtle Beach is gradually decreasing during September, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in North Myrtle Beach?
Climate Change Over the Years
The climate in North Myrtle Beach in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+70°F) and the highest in 2023 (+74°F). The driest year was 2007 with only 838 mm of rainfall, and the wettest year was 2020 with 2021 mm.
FAQ
Is September a good time to visit North Myrtle Beach?
Can you sunbathe in North Myrtle Beach in September?
Is North Myrtle Beach rainy in September?
Is it sunny in North Myrtle Beach in September?
Other cities in USA
Monthly weather in North Myrtle Beach
Source of the data
For this page, we’ve looked at the typical weather in North Myrtle Beach, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
