December Weather in San Antonio

Last updated: March 2, 2024

The weather in San Antonio, Mexico, during December is characterized by an average temperature of 15°C (59°F). Highs can soar to 26°C (79°F), while lows may dip to 5°C (42°F). Typically, the humidity level in San Antonio throughout December hovers around 74%.

5°C (42°F)

Minimum temperature

15°C (59°F)

Average temperature

26°C (79°F)

Maximum temperature

74%

Humidity

Precipitation and Sunshine hours

In December, San Antonio averages 10 mm (0.4 inches) of rainfall, typically over the course of 2 rainy days. The month enjoys an average of 10 hours 56 minutes of daylight, with the sun shining for approximately 9 hours 20 minutes each day. Additionally, there is a 71% probability of sunny days during this period.

10 mm (0.4 inches)

Precipitation

2 rainy days

Rainy days

9 hours 20 minutes

Sunshine hours

71%

Chance of sun

UV Index

In December, the UV Index in San Antonio reaches a maximum of 8, 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 0 1 2 4 6 8 8 7 5 3 1 1 0
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

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