Month guide · San Antonio · United States
San Antonio in December
What December is really like in San Antonio: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Daniel Schwen, CC BY-SA 4.0
Quick answer
December is a shoulder-season month. Expect average highs of 18°C (64°F), lows of 6°C (43°F), about 7 rainy days and roughly 10.3 hours of daylight. Mild with occasional cold snaps; the River Walk is strung with lights and luminarias.
Key facts
- Average high / low
- 18°C (64°F) / 6°C (43°F)
- Rainy days
- About 7
- Daylight
- About 10.3 hours
- Crowds
- Moderate
- Hotel prices
- Average
Weather in December
December is the 11th-warmest month in San Antonio: days average 18°C (64°F) against a yearly average high of 27°C (81°F), and nights fall to about 6°C (43°F). Rain falls on roughly 7 of its 31 days. Compared with November (22°C (72°F)), December is cooler; by January highs stay near 17°C (63°F).
- Sunrise (15 December)
- About 07:21
- Sunset (15 December)
- About 17:38
- Daylight
- About 10.3 hours
Winter (December–February). Mild days, occasional cold fronts, holiday lights on the River Walk and lower prices after New Year.
Crowds and prices
On a 1–5 scale, December rates 3 for crowds (the peak is April at 5) and 3 for hotel prices (highest in April). Prices sit in the middle of the year's range.
Events in December
- Fiesta de las Luminarias — candlelit River Walk (usually December weekends)
- Las Posadas procession along the River Walk (usually mid-December)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in December
Mild, settled days suit walking, viewpoints and time outdoors.
Historic site · Mission Reach
San Antonio Missions National Historical Park
Four 18th-century Spanish missions south of downtown — Concepción, San José, San Juan and Espada — still serve as active parishes.
- Time needed
- Half a day
- Cost
- Free
- History
- Free
- Architecture
- Outdoors
- Photo spot
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Viewpoint · Hemisfair
Tower of the Americas
Go up shortly before sunset to see the city in daylight and as the lights come on.
- Time needed
- 1 hour
- Cost
- Mid-priced
- Views
- After dark
- Kids
- Couples
Park · Hemisfair
Yanaguana Garden at Hemisfair
A large free playground on the former world's fair grounds, with climbing structures, a splash pad, sand areas and giant board games, surrounded by restored historic houses and cafés.
- Time needed
- 1–2 hours
- Cost
- Free
- Kids
- Free
- Outdoors
Garden · Brackenridge Park
Japanese Tea Garden
Visit in the morning when the light falls on the waterfall, then walk to the zoo next door.
- Time needed
- 45 minutes
- Cost
- Free
- Free
- Couples
- Photo spot
- Outdoors
What to pack
For highs near 18°C, lows near 6°C and 7 wet days: layers, a warm sweater and a jacket for cool evenings; a packable rain jacket for showers; comfortable walking shoes.
Is December a good time to visit San Antonio?
A shoulder-season month, with 2 notable events on the calendar. If your dates are flexible, March–April and October–November are better overall. Compare every month.
San Antonio in other months
Questions travellers ask
+Is December a good time to visit San Antonio?
It is a shoulder-season month. Mild with occasional cold snaps; the River Walk is strung with lights and luminarias.
+How warm is San Antonio in December?
Average highs are around 18°C (64°F) and lows around 6°C (43°F).
+Does it rain a lot in San Antonio in December?
Expect rain on about 7 days of the month.