Looking for events and things to do in San Marcos? A lively college town between Austin and San Antonio, San Marcos centers its events on the river, the university, and its historic square. This local guide covers San Marcos’s biggest annual festivals, recurring markets and events, seasonal highlights, and how to find out what’s happening this weekend — straight from the people who live here.
San Marcos’s biggest annual events & festivals
San Marcos’ signature events include the Mermaid Society SMTX festival (celebrating the San Marcos River and mermaid folklore), the Sights & Sounds of Christmas, the Texas State University homecoming and events, the Summer in the Park concert series, and river-season celebrations.
Farmers markets & recurring things to do in San Marcos
The San Marcos farmers market runs in season, and the historic Downtown Square and the San Marcos River host regular concerts, festivals, and events, with a lively bar-and-music scene around Texas State University.
San Marcos through the seasons
Summer revolves around the spring-fed river — tubing, Summer in the Park concerts, and festivals; fall brings Texas State homecoming and events; and winter features the beloved Sights & Sounds of Christmas at the park.
What to know about San Marcos events
The Downtown Square and the river are the event hubs, both walkable. Texas State drives much of the calendar. It’s an easy trip to Austin and San Antonio, but the river and square events are the local draw.
What’s happening in San Marcos this weekend
Printed event calendars go stale fast, and the best local happenings — pop-ups, block parties, last-minute shows — often never make the official listings. The most current, honest answer to “what’s going on this weekend?” comes from neighbors. On Neighborhood Nurturers’ San Marcos community, real San Marcos residents post and discuss what’s happening right now. For more ideas any time, see our guide to the best things to do in San Marcos. Join your San Marcos neighbors free and never miss what’s happening →
Fitting it into a day in San Marcos
The best events here are seasonal and neighborhood-driven, so timing is everything. What sets San Marcos apart is how close everything sits together. Start near the San Marcos River, work in one of the spots from this guide, and you are minutes from Rio Vista Falls if you want to keep going. Locals often round out the local calendar with a detour to Purgatory Creek Natural Area or a quieter stop at the Texas State campus. Because the distances are short, you can improvise as you go rather than lock the whole day down in advance.
More San Marcos guides
San Marcos rewards people who dig a little deeper. These related guides map the same neighborhoods from different starting points: Things to do in San Marcos, Free things to do in San Marcos, Things to do with kids in San Marcos — enough to plan a whole day or two.
Get a local’s take
Guides are a starting point; the current, on-the-ground details come from people who live in San Marcos. Hours shift, favorites change, and residents always know what is genuinely worth it now. Ask San Marcos neighbors directly or join your town community free to hear from real locals.
Frequently asked questions
What are the biggest events in San Marcos, Texas?
The Mermaid Society SMTX festival, the Sights & Sounds of Christmas, Texas State University events, and the Summer in the Park concert series.
Does San Marcos have a farmers market?
Yes — the San Marcos farmers market runs in season, alongside Downtown Square and riverside events.
What’s happening in San Marcos this weekend?
San Marcos neighbors share the most current local events — from river-season happenings to square festivals and campus events — in our community.