December Weather in San Antonio

Last updated: March 2, 2024

The weather in San Antonio, Argentina, during December is characterized by an average temperature of 19°C (66°F). Highs can soar to 30°C (86°F), while lows may dip to 10°C (50°F). Typically, the humidity level in San Antonio throughout December hovers around 61%.

10°C (50°F)

Minimum temperature

19°C (66°F)

Average temperature

30°C (86°F)

Maximum temperature

61%

Humidity

Precipitation and Sunshine hours

In December, San Antonio averages 230 mm (9.0 inches) of rainfall, typically over the course of 21 rainy days. The month enjoys an average of 13 hours 52 minutes of daylight, with the sun shining for approximately 11 hours 5 minutes each day. Additionally, there is a 39% probability of sunny days during this period.

230 mm (9.0 inches)

Precipitation

21 rainy days

Rainy days

11 hours 5 minutes

Sunshine hours

39%

Chance of sun

UV Index

In December, the UV Index in San Antonio reaches a maximum of 15, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 2 4 8 11 14 15 15 12 9 5 2 1
Exposure Low Moderate VeryHigh Extreme VeryHigh Moderate Low
Time to burn 45 min 30 min 15 min 10 min 15 min 30 min 45 min

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