December Weather in Port Saint Lucie

Last updated: March 2, 2024

The weather in Port Saint Lucie, United States, during December is characterized by an average temperature of 21°C (71°F). Highs can soar to 28°C (83°F), while lows may dip to 10°C (51°F). Typically, the humidity level in Port Saint Lucie throughout December hovers around 84%.

10°C (51°F)

Minimum temperature

21°C (71°F)

Average temperature

28°C (83°F)

Maximum temperature

84%

Humidity

Precipitation and Sunshine hours

In December, Port Saint Lucie averages 49 mm (1.9 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 10 hours 26 minutes of daylight, with the sun shining for approximately 8 hours 51 minutes each day. Additionally, there is a 65% probability of sunny days during this period.

49 mm (1.9 inches)

Precipitation

10 rainy days

Rainy days

8 hours 51 minutes

Sunshine hours

65%

Chance of sun

UV Index

In December, the UV Index in Port Saint Lucie reaches a maximum of 5, 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 5 5 5 4 3 1 1 0 0
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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