San Antonio Weather in December

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Check the San Antonio, Texas weather in December before you book your next holiday. This gives the best indication of the weather in December and includes figures for temperature, sunshine and rainfall.

  • 18°C maximum daytime temperature in December in San Antonio18
    18°C max day temperature
  • 5 hours of sunshine per day (47% of daylight hours) in December in San Antonio5
    5 hours of sunshine per day
  • 7 days with some rainfall in December in San Antonio7
    7 days with some rainfall
  • 5°C minimum night-time temperature in December in San Antonio5
    5°C min night temperature
  • 10 hours of daylight per day in December in San Antonio10
    10 hours of daylight per day
  • No heat & humidity in December in San Antonio0
    No heat & humidity
  • 38 mm monthly rainfall in December in San Antonio38
    38 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in December in San Antonio4
    4 (Moderate) UV index

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Metric (°C / mm)  |  Imperial (°F / inches)

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San Antonio weather by month

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