September Weather in Myrtle

Last updated: March 2, 2024

The weather in Myrtle, United States, during September is characterized by an average temperature of 24°C (76°F). Highs can soar to 34°C (94°F), while lows may dip to 13°C (56°F). Typically, the humidity level in Myrtle throughout September hovers around 70%.

13°C (56°F)

Minimum temperature

24°C (76°F)

Average temperature

34°C (94°F)

Maximum temperature

70%

Humidity

Precipitation and Sunshine hours

In September, Myrtle averages 116 mm (4.6 inches) of rainfall, typically over the course of 7 rainy days. The month enjoys an average of 12 hours 20 minutes of daylight, with the sun shining for approximately 9 hours 40 minutes each day. Additionally, there is a 53% probability of sunny days during this period.

116 mm (4.6 inches)

Precipitation

7 rainy days

Rainy days

9 hours 40 minutes

Sunshine hours

53%

Chance of sun

UV Index

In September, the UV Index in Myrtle reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 3 5 7 9 9 8 6 4 2 1 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare Myrtle's Climate with Cities Worldwide