What January feels like in San Antonio
January is the coldest stretch of winter in San Antonio. Daytime feels cool and fresh rather than cold. Evenings bring a clear drop in temperature, and nights are cold. The air is damp, which makes cool temperatures feel colder, particularly in wind.
Rain in San Antonio in January
Most days stay dry; rain arrives about one day in 4. A rainy day brings about 8.2 mm (0.3 in) on average — steady rain rather than a passing shower. The yearly figure is similar, around 8.5 mm per wet day.
Daylight and sunshine in January
In mid-January, sunrise is at about 7:29 am and sunset at about 5:56 pm (local time) — 10 h 27 min of daylight. The days are stretching out — 10 min more daylight than mid-December. Measured sunshine covers about 70% of the daylight — there are plenty of bright spells.
How January compares to the rest of the year
In San Antonio's temperature order, January sits as the coolest month. Compared with December, afternoons are 1.4°C (2.5°F) cooler, with 9 mm more rain. This is the low point, and February starts to warm up. By February, typical highs are 19.6°C (67.3°F).
Who January suits
- Sightseeing: a good fit — comfortable enough to explore on foot all day.
- Parks & outdoor: a good fit — comfortable for long walks and picnics.
Tips for visiting San Antonio in January
Versatile Layers
Days are noticeably warmer than nights — layers you can add or remove.
Light Jacket
Bring a sweater or light coat for cool afternoons.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is San Antonio in January?
Afternoons average 17.1°C (62.8°F) and nights about 6.5°C (43.7°F) — cool by most people's standards. It is the coolest month of the year.
Does it rain a lot in San Antonio in January?
Not especially. There are about 7 rainy days (58 mm), mostly moderate rain.
What should I wear in San Antonio in January?
Pack versatile layers, a light jacket and sunglasses. Add a layer for after dark.
Is January or February better for visiting San Antonio?
February scores better on our climate ranking (#2 of 12 vs #6), rated Great against Good. February is warmer.