Average temperatures, rainfall and packing tips for San Antonio, United States in December
🌡️ Avg high
21°C
🌙 Avg low
11°C
🌧️ Rainfall
~63 mm
📊 Warmth rank
#11 of 12
December in San Antonio at a glance
December in San Antonio is typically warm, with average daytime highs around 21°C and nights near 11°C. It is one of the cooler months of San Antonio's year.
Expect some rain: around 63 mm falls in San Antonio during December on average.
What to pack for San Antonio in December
T-shirts and light layers
A light jacket or sweater for the evenings
A compact umbrella for occasional showers
San Antonio - year at a glance
HighLow · December highlighted
Is December a good time to visit San Antonio?
🧳 December is one of the most comfortable months to visit San Antonio - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.
In December, San Antonio averages a daytime high of about 21°C and a night-time low of around 11°C, based on recent historical data.
Does it rain in San Antonio in December?
Expect some rain: around 63 mm falls in San Antonio during December on average.
Is December a good time to visit San Antonio?
December is one of the most comfortable months to visit San Antonio - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.