Early winter · Weather & things to do
San Antonio in December
San Antonio cools off: highs slip to 64°F (18°C), from 73°F in November, with lows of 42°F (6°C) and about 1.8 in (45 mm) of rain.
At 91/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 64°F (18°C)
- Avg low
- 42°F (6°C)
- Rain
- 1.8 in (45 mm)
- Humidity
- 69%
- Cloud cover
- 55%
- Daylight
- ~10 h 07 min
- Comfort score
- 91/100 · Great
What December feels like
Days are mild at around 64°F (18°C): comfortable for walking all day, with a layer for the evening.
Mornings start much cooler: lows average 42°F (6°C), about 13°C (23°F) below the afternoon high.
About 1.8 in (45 mm) of rain falls in a typical year's December.
Plan around December
December is one of San Antonio's best months on the climate data.
- Shortest days of the year, about 10 h 07 min of daylight.
- Comfort holds steady from November (92 → 91/100).
- December sits inside the Oct – Apr window our Texas BBQ Trail route recommends.
- Our San Antonio & the Texas Hill Country route is planned for Late Nov – Dec, a window set by the holiday season rather than the weather — December is part of it.
What to pack for December
- A warm layer for eveningsnights drop to 42°F
- Comfortable walking shoesmost picks involve some walking
What to do in San Antonio in December
With conditions on your side, the picks below favor time outside.
The Pearl
Restored brewery complex with restaurants, shops and a weekend farmers market.
Historic Market Square
Mexican-style marketplace with crafts, food stalls and weekend music.
Why now December scores 91/100 for comfort, good conditions for being outside.
San Antonio Museum of Art
Former Lone Star brewery housing strong Latin American and antiquities collections.
2M Smokehouse
South Side barbecue with Mexican-American touches like serrano-cheese sausage.
Mi Tierra Café y Panadería
24-hour Tex-Mex restaurant and bakery in Market Square since 1941.
Why now Highs near 64°F and 1.8 in of monthly rain make this an easy outdoor pick.
Menger Bar
Dark-paneled 1887 bar in the Menger Hotel beside the Alamo, modeled on the House of Lords pub in London.
Nearby in December
- Texas Hill Country in December~58 mi · highs 60°F, 1.5 in rain · 2°C (4°F) cooler by day, about as wet
- Austin in December~74 mi · highs 62°F, 1.9 in rain · 1°C (2°F) cooler by day, about as wet
- Downtown Houston in December~189 mi · highs 64°F, 3.8 in rain · similar daytime temperatures, wetter
- Dallas in December~252 mi · highs 57°F, 2.4 in rain · 4°C (8°F) cooler by day, wetter
These averages also cover Downtown San Antonio & Hemisfair and Pearl & Museum Reach.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
San Antonio in December: quick answers
Is December a good time to visit San Antonio?
Yes. On the climate data it's one of the best months, scoring 91/100. Expect highs of 64°F (18°C) and 1.8 in (45 mm) of rain. December is inside the Oct – Apr window our Texas BBQ Trail route recommends.
How hot is San Antonio in December?
Average highs are 64°F (18°C) and average lows 42°F (6°C), making it the 2nd-coldest month by daytime highs.
Does it rain a lot in San Antonio in December?
Not much: about 1.8 in (45 mm) of rain falls across December on average, the 2nd-driest month of the year. The annual total is about 30.7 in (779 mm).
What should I pack for San Antonio in December?
Bring a warm layer for evenings (nights drop to 42°F) and comfortable walking shoes (most picks involve some walking).
More on San Antonio
Routes in season in December
- Texas BBQ Trail Oct – Apr
- San Antonio & the Texas Hill Country Late Nov – Dec
Planning San Antonio in December?
Share this December plan with your group, poll everyone on dates and keep the packing list in one place.