Mid-winter · Weather & things to do
San Antonio in January
This is the coldest month in San Antonio: highs average 63°F (17°C) and lows 40°F (5°C), with about 1.9 in (49 mm) of rain.
At 88/100 for comfort (4th of 12), it's one of the best months to visit.
- Avg high
- 63°F (17°C)
- Avg low
- 40°F (5°C)
- Rain
- 1.9 in (49 mm)
- Humidity
- 70%
- Cloud cover
- 55%
- Daylight
- ~10 h 19 min
- Comfort score
- 88/100 · Great
What January feels like
Highs near 63°F (17°C) make for comfortable sightseeing weather.
There's a big swing between day and night, about 13°C (23°F), so mornings and evenings feel much cooler than the afternoon.
Rain is moderate at about 1.9 in (49 mm) for the month.
Plan around January
January is one of San Antonio's best months on the climate data.
- Comfort slips from 91/100 in December to 88/100.
- January 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 — January falls outside it.
What to pack for January
- A warm layer for eveningslows near 40°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in San Antonio in January
January is good outdoor weather here, so these picks lean toward the open air.
Mi Tierra Café y Panadería
24-hour Tex-Mex restaurant and bakery in Market Square since 1941.
Why now January scores 88/100 for comfort, good conditions for being outside.
Mission San José
Largest of the four missions in San Antonio Missions National Historical Park.
Why now Highs near 63°F and 1.9 in of monthly rain make this an easy outdoor pick.
Historic Market Square
Mexican-style marketplace with crafts, food stalls and weekend music.
Why now One to do outside while the weather is on your side.
River Walk
Stone-lined walkways along the San Antonio River, with cypress trees and bridges strung with lights through the holidays.
San Antonio River Walk
Below-street paths along the river; take a GO RIO boat for an overview.
The Alamo
1718 mission and site of the 1836 battle, with the church and Long Barrack.
Nearby in January
- Texas Hill Country in January~58 mi · highs 59°F, 1.9 in rain · 2°C (4°F) cooler by day, about as wet
- Austin in January~74 mi · highs 60°F, 2.3 in rain · 1°C (3°F) cooler by day, about as wet
- Downtown Houston in January~189 mi · highs 61°F, 3.5 in rain · 1°C (2°F) cooler by day, wetter
- Dallas in January~252 mi · highs 55°F, 2.3 in rain · 5°C (8°F) cooler by day, about as wet
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 January: quick answers
Is January a good time to visit San Antonio?
Yes. On the climate data it's one of the best months, scoring 88/100. Expect highs of 63°F (17°C) and 1.9 in (49 mm) of rain. January is inside the Oct – Apr window our Texas BBQ Trail route recommends.
How cold is San Antonio in January?
Average highs are 63°F (17°C) and average lows 40°F (5°C), making it the coldest month by daytime highs.
Does it rain a lot in San Antonio in January?
Not much: about 1.9 in (49 mm) of rain falls across January on average, the 4th-driest month of the year. The annual total is about 30.7 in (779 mm).
What should I pack for San Antonio in January?
Bring a warm layer for evenings (lows near 40°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on San Antonio
Routes in season in January
- Texas BBQ Trail Oct – Apr
Planning San Antonio in January?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.