Sporty
Cargo Rain Jacket
A black rain jacket over an oversized graphic tee and olive cargo trousers handles mild rain practically. White lace-up booties finish the look with enough contrast to lift the palette.
What to Wear in San Antonio in December
December in San Antonio is mild with highs averaging 63°F and lows near 41°F — cool enough for a jacket or light coat but rarely severe. The River Walk's Christmas lights and the historic Market Square draw large crowds in comfortable afternoon temperatures; a medium-weight jacket handles the cooler evenings when the temperature drops from the mid-60s to the low 40s. About 7 days bring rain, so a water-resistant layer is worth packing.
What to wear
top / Long-Sleeve Top
fitted long-sleeve
lightweight layer for mild temps
bottom / Jeans
straight-leg
chinos for a slightly smarter look
footwear / Waterproof Boots
ankle boots
rubber sole for traction — keep feet dry all day
outerwear / Rain Jacket
shell jacket
waterproof or DWR-treated — keep it packable
Consider bringing:
Umbrella
Based on typical December conditions in San Antonio. Weather varies year to year — check the live forecast when you're within two weeks of your trip.
December in San Antonio, TX, offers a mild yet variable winter climate, making smart packing essential. Expect average daytime temperatures to hover in the low to mid-60s Fahrenheit (16-18°C), often feeling pleasant for exploring the River Walk or Alamo. However, evenings and early mornings see a significant drop, typically into the low 40s Fahrenheit (4-6°C), and occasional cold fronts can push temperatures even lower. While rainfall is generally infrequent, a sporadic shower isn't out of the question, so a light, water-resistant outer layer can be beneficial. The weather can swing from crisp and cool to surprisingly balmy within a single day. To comfortably navigate San Antonio in December, layering is your best strategy. Start with long-sleeved tops or light sweaters. Pair these with a versatile medium-weight jacket – think a stylish utility jacket, a denim jacket, or a fleece-lined option – that you can easily take on or take off. Comfortable walking shoes are a must for sightseeing, and consider adding a scarf for extra warmth on cooler evenings. While heavy winter coats are usually overkill, don't underestimate the need for warmer clothing once the sun sets, especially if you plan to enjoy outdoor dining or evening strolls.
Curated Looks
Formal
Grey Coat Wide-Leg
A grey longline coat over an ivory blouse and black wide-leg trousers handles mild rain without losing formal intent. Black Chelsea boots and a mini bag keep it focused.
Cozy
Parka Cable Knit Mules
A black longline parka over a cable knit sweater in mild rain keeps warmth without overdressing. Black mule heels under leggings are an unexpected and intentional detail.
Business Casual
Navy Trench and Shorts
A navy trench coat over khaki bermuda shorts and a blue linen blouse works between seasons on a mild rainy day. Black pointed-toe heels sharpen what could easily be too casual.
Chic
Cream Puffer Wide-Leg
A cream oversized puffer over a navy striped cardigan and wide-leg ivory linen trousers handles mild rain with a considered mix of textures. Black ballet flats are the restrained finish.
Casual
Olive Anorak Trousers
An olive anorak handles mild rain without abandoning the polish of wide-leg navy trousers underneath. The crossbody stays tucked and close.
Cute
Blush Jacket Knit Skirt
A blush cropped jacket over a grey cardigan and black sweater mini skirt handles mild rain with charm. A black bucket bag and ankle boots keep the proportions balanced.
Packing List
What to Pack for San Antonio in December →
Other Months in San Antonio
Frequently Asked Questions
What should I wear in San Antonio in December?+
Layering is key for San Antonio's variable December weather. Pack versatile items like long-sleeved tops, light sweaters, and a medium-weight jacket that can be easily removed. Comfortable walking shoes are essential, and a scarf will add warmth during cooler evenings.
Is San Antonio cold in December?+
While not 'cold' compared to more northern climates, San Antonio can be quite cool in December. Daytime temperatures often range from the low to mid-60s Fahrenheit, but evenings consistently drop into the low 40s Fahrenheit. Occasional cold fronts can make it feel significantly chillier, so don't underestimate the evening briskness.
Does it rain in San Antonio in December?+
December is typically one of San Antonio's drier months, so heavy rainfall is infrequent. However, sporadic light showers are always a possibility, particularly later in the month. It's wise to pack a light, water-resistant jacket just in case.
What should I pack for San Antonio in December?+
Focus your packing on adaptable layers: a mix of long-sleeved tops, sweaters, and a versatile medium-weight jacket. Include comfortable closed-toe shoes suitable for walking, especially if exploring the River Walk or historic sites. Don't forget accessories like a scarf for evening warmth and a small umbrella or light rain jacket.
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