September Weather in Grand Bay

Last updated: March 2, 2024

The weather in Grand Bay, United States, during September is characterized by an average temperature of 26°C (80°F). Highs can soar to 33°C (92°F), while lows may dip to 19°C (66°F). Typically, the humidity level in Grand Bay throughout September hovers around 80%.

19°C (66°F)

Minimum temperature

26°C (80°F)

Average temperature

33°C (92°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In September, Grand Bay averages 170 mm (6.7 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 12 hours 18 minutes of daylight, with the sun shining for approximately 9 hours 24 minutes each day. Additionally, there is a 44% probability of sunny days during this period.

170 mm (6.7 inches)

Precipitation

14 rainy days

Rainy days

9 hours 24 minutes

Sunshine hours

44%

Chance of sun

UV Index

In September, the UV Index in Grand Bay reaches a maximum of 10, 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 8 10 10 9 7 4 2 1 1
Exposure Low Moderate VeryHigh High Moderate Low
Time to burn 45 min 30 min 15 min 25 min 30 min 45 min

Compare Grand Bay's Climate with Cities Worldwide