December Weather in Monterey

Last updated: March 2, 2024

The weather in Monterey, United States, during December is characterized by an average temperature of 12°C (54°F). Highs can soar to 18°C (64°F), while lows may dip to 9°C (49°F). Typically, the humidity level in Monterey throughout December hovers around 80%.

9°C (49°F)

Minimum temperature

12°C (54°F)

Average temperature

18°C (64°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In December, Monterey averages 105 mm (4.1 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 9 hours 41 minutes of daylight, with the sun shining for approximately 6 hours 47 minutes each day. Additionally, there is a 43% probability of sunny days during this period.

105 mm (4.1 inches)

Precipitation

10 rainy days

Rainy days

6 hours 47 minutes

Sunshine hours

43%

Chance of sun

UV Index

In December, the UV Index in Monterey reaches a maximum of 3, 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 1 2 3 3 3 2 1 1 0 0 0
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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