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Myrtle Beach weather in September 2025
Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Myrtle Beach in September. Check more long-term weather averages for Myrtle Beach in September before you book your next holiday to South Carolina in 2025/2026.
- 2929°C max day temperature
- 8 hours of sunshine per day
- 99 days with some rainfall
- 1818°C min night temperature
- 1212 hours of daylight per day
- MModerate heat & humidity
- 139139 mm of monthly rainfall
- 88 (Very High) UV index
- 2626°C sea temperature
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Recommended for South Carolina
The September weather guide for South Carolina (Myrtle Beach) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Myrtle Beach in September?
Daytime temperatures usually reach 29°C in Myrtle Beach in September with moderate heat and humidity, falling to 18°C at night.
How sunny is it in Myrtle Beach in September?
There are normally 8 hours of bright sunshine each day in Myrtle Beach in September - that's 61% of daylight hours.
How warm is the sea around Myrtle Beach in September?
The average sea temperature around Myrtle Beach in September is 26°C.
Does it rain in Myrtle Beach in September?
There are usually 9 days with some rain in Myrtle Beach in September and the average monthly rainfall is 139mm.
What is the chance of a hurricane in Myrtle Beach in September?
On average 1.3 days in September in Myrtle Beach are likely to be affected by the passage of one or more tropical storms.
Myrtle Beach September sunrise & sunset times
Browse the sunrise and sunset times for Myrtle Beach in September 2025. Select a month to view Myrtle Beach sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:50 | 18:41 |
Monday, 15th September 2025 | 05:59 | 18:21 |
Tuesday, 30th September 2025 | 06:09 | 18:01 |
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