December Weather in Bay Saint Louis

Last updated: March 2, 2024

The weather in Bay Saint Louis, United States, during December is characterized by an average temperature of 14°C (58°F). Highs can soar to 21°C (69°F), while lows may dip to 5°C (42°F). Typically, the humidity level in Bay Saint Louis throughout December hovers around 87%.

5°C (42°F)

Minimum temperature

14°C (58°F)

Average temperature

21°C (69°F)

Maximum temperature

87%

Humidity

Precipitation and Sunshine hours

In December, Bay Saint Louis averages 120 mm (4.7 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 10 hours 12 minutes of daylight, with the sun shining for approximately 7 hours 11 minutes each day. Additionally, there is a 42% probability of sunny days during this period.

120 mm (4.7 inches)

Precipitation

12 rainy days

Rainy days

7 hours 11 minutes

Sunshine hours

42%

Chance of sun

UV Index

In December, the UV Index in Bay Saint Louis reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 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 2 3 4 4 4 3 2 1 0 0 0
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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