December Weather in Santa Cruz

Last updated: March 2, 2024

The weather in Santa Cruz, United States, during December is characterized by an average temperature of 12°C (53°F). Highs can soar to 18°C (65°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Santa Cruz throughout December hovers around 80%.

8°C (46°F)

Minimum temperature

12°C (53°F)

Average temperature

18°C (65°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In December, Santa Cruz averages 126 mm (4.9 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 9 hours 39 minutes of daylight, with the sun shining for approximately 6 hours 37 minutes each day. Additionally, there is a 43% probability of sunny days during this period.

126 mm (4.9 inches)

Precipitation

9 rainy days

Rainy days

6 hours 37 minutes

Sunshine hours

43%

Chance of sun

UV Index

In December, the UV Index in Santa Cruz 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 0 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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