Major city · United States
San MarcosSan Marcos, Texas
Give San Marcos one full day for the river and the springs, two if you want the outlets: it is a stop between Austin and San Antonio, not a base.
San Marcos is a college town on I-35, about 30 minutes south of Austin and 45 minutes north of San Antonio, built around a spring-fed river that runs straight through the middle. Texas State University sets the rhythm: cheap food, bars open late, tubing in summer. Most travellers see it as a half-day on the drive between the two big cities, or as a one-night stop for the outlets and the river.
More ways in
Local time, weather, currency, airports
- Weather
- see forecast
- Currency
- USD
- Best months
- Mar–May, Sep–Nov
- avoid Jul–Aug (38°C (100°F)+ and crowded river), plus graduation weekends in May and Decemberavoid Jul–Aug (100°F (38°C)+ and crowded river), plus graduation weekends in May and December
- Airports
- AUS · SAT
- Nights
- 1–2
Rules in force · 7Crossing between the US, Canada and Mexico by land needs …Cannabis is legal in Canada and in many US states, but ta…
- North America ↗Crossing between the US, Canada and Mexico by land needs your passport even on a day trip; rental cars need the company's written permission to cross, and most US and Canadian rental insurance stops at the Mexican border.
- North America ↗Cannabis is legal in Canada and in many US states, but taking any amount across the US, Canadian or Mexican border is a federal crime — including edibles and vapes.
- North America ↗The busiest US and Canadian national parks need timed-entry, campsite or lodge reservations in summer; release dates are months ahead.
- United States ↗Check whether you need an ESTA (Visa Waiver Program) or a visa on the official CBP and State Department sites; apply only through esta.cbp.dhs.gov, not third-party sites, and allow time before you book.
- United States ↗Several popular national parks use timed-entry or vehicle reservations in peak season; check each park's page on nps.gov and book on recreation.gov before fixing your dates.
- United States ↗Medical care is very expensive for visitors; buy travel insurance with high medical cover before you fly.
- United States ↗Tipping is expected: about 15–20% at sit-down restaurants and bars, and a tip for taxis, hotel staff and guides.
What is in this basic guide9 covered · 4 not yet ▾
In this guide
Not in this guide yet
- Walking areas with bag rules
- Day plans checked against opening hours
- Airport-to-bed timings and the last safe connection
- Field-checked times and prices
Official sites
Emergency numbers for San Marcos911 ▾
- Police, fire, ambulance911
Tap a number to call from your phone. These are the numbers listed in this guide; a row marked check has not been verified.
EssentialsQuick answers and what things cost
Essentials
Quick answers and what things cost
Quick answers
The questions people ask first about San Marcos, one line each. Tap a card for the full answer.
- Cash or card?Currency is the US dollar (USD, $).United States-wide
- SIM or eSIMAT&T, Verizon and T-Mobile cover the country; prepaid SIMs at their stores and Walmart/Target (passport required), or an eSIM before you fly.United States-wide
- Tap waterTap water is drinkable nearly everywhere; boil or treat water from streams in parks.United States-wide
- TippingSit-down restaurant: 18–22% of the pre-tax bill.United States-wide
- Plugs & powerSockets A/B. US/Canada (A/B): fits · UK/Ireland (G): adapter · Australia/NZ (I): adapter. 120 V: UK and AU 230 V-only devices need a converter; most chargers are dual-voltage.United States-wide
- SafetyA small, generally safe city; the real risks are the river (current, cold spring water, no cell signal in the valley) and summer heat.
Show all 12 answers
- RestroomsFree public toilets are scarce in big cities; use cafés, department stores, libraries, stations.United States-wide
- Emergency numbers911 police, fire, ambulance
- Sundays & holidaysFederal holidays close offices, banks and post offices; national parks stay open.United States-wide
- Your embassyFind your embassy's 24-hour line before you fly.
- AirportAUS Austin-Bergstrom International (About 35 min north on I-35 or SH-130; the closest airport.).
- Getting aroundA car is the practical choice: sights, springs and outlets are spread along I-35 and parking is mostly free.
Cost cheat-sheet
Typical prices for the everyday things, as ranges. Your currency is shown next to the local price.
- Coffee$3–6
- Street or quick mealBreakfast tacos$3–5 each
- BeerDraught beer downtown$6–9
- Budget bedFamily room (up to 4), a night, per roomUS$140
- Mid-range bedChain-hotel double room, a night, per roomUS$150
- High-end bedChain-hotel double room, a night, per roomUS$260
A day, not counting the bed: Budget US$70 · Mid US$130 · High US$220
Prices in local money; change the currency in the header to see yours next to them. Every price and the budget calculator →
DecideWhat it is known for, and when the weather works
Decide
What it is known for, and when the weather works
At a glance
What the city is known for, how you fly in, and where to find the phrases.
- Airports
- AUS Austin-Bergstrom International (About 35 min north on I-35 or SH-130; the closest airport.) · SAT San Antonio International (About 50 min south on I-35.)
Best months at a glance
From the guide's best and avoid lists
Jan
not flagged
17°C (63°F)63°F (17°C)
Feb
not flagged
19°C (66°F)66°F (19°C)
Mar
Best
23°C (73°F)73°F (23°C)
Apr
Best
27°C (81°F)81°F (27°C)
May
Care
30°C (86°F)86°F (30°C)
Jun
not flagged
33°C (91°F)91°F (33°C)
Jul
Avoid
35°C (95°F)95°F (35°C)
Aug
Avoid
36°C (97°F)97°F (36°C)
Sep
Best
33°C (91°F)91°F (33°C)
Oct
Best
28°C (82°F)82°F (28°C)
Nov
Best
22°C (72°F)72°F (22°C)
Dec
Avoid
18°C (64°F)64°F (18°C)
Best: Mar–Apr, Sep–Nov. Mixed: May. Avoid: Jul–Aug, Dec. Month by month →
Warmest Aug (36°C (97°F)97°F (36°C)), coolest Jan (5°C (41°F)41°F (5°C) low), wettest May (8 rain days), driest Jul (5). Averages, not a forecast.
Weather and climate
San Marcos: next 7 days
Loading forecast…
Forecast: Open-Meteo (CC BY 4.0), model data for this point.
Air quality
Loading…
Model estimate (CAMS via Open-Meteo), not a street-level station; readings near busy roads run higher.
Jan
17°C (63°F)63°F (17°C)
5°C (41°F)41°F (5°C)
7 rd
Feb
19°C (66°F)66°F (19°C)
7°C (45°F)45°F (7°C)
7 rd
Mar
23°C (73°F)73°F (23°C)
11°C (52°F)52°F (11°C)
7 rd
Apr
27°C (81°F)81°F (27°C)
15°C (59°F)59°F (15°C)
6 rd
May
30°C (86°F)86°F (30°C)
19°C (66°F)66°F (19°C)
8 rd
Jun
33°C (91°F)91°F (33°C)
22°C (72°F)72°F (22°C)
6 rd
Jul
35°C (95°F)95°F (35°C)
23°C (73°F)73°F (23°C)
5 rd
Aug
36°C (97°F)97°F (36°C)
23°C (73°F)73°F (23°C)
5 rd
Sep
33°C (91°F)91°F (33°C)
21°C (70°F)70°F (21°C)
7 rd
Oct
28°C (82°F)82°F (28°C)
15°C (59°F)59°F (15°C)
6 rd
Nov
22°C (72°F)72°F (22°C)
9°C (48°F)48°F (9°C)
6 rd
Dec
18°C (64°F)64°F (18°C)
5°C (41°F)41°F (5°C)
7 rd
High / low, both scales · rd = rain days
Arrive & moveAirports are listed under At a glance; this is how to move once you are in
Arrive & move
Airports are listed under At a glance; this is how to move once you are in
Getting around
A car is the practical choice: sights, springs and outlets are spread along I-35 and parking is mostly free. CARTS runs limited local buses at 50 cents a ride (check). Downtown and campus are flat and short enough to walk or cycle.
See & doDay-trips, door to door
See & do
Day-trips, door to door
Day-trips
Austin
goDoor to door: 35–50 min by car
I-35 north, about 23 miles
Do it as a day or as the next stop; traffic peaks 07:00–09:00 and 16:00–18:30.Do it as a day or as the next stop; traffic peaks 7:00 AM–9:00 AM and 4:00 PM–6:30 PM.
New Braunfels
goDoor to door: 25–35 min by car
I-35 south, about 19 miles
German heritage downtown and the Comal River; a natural pairing with tubing here.
Wimberley
goDoor to door: 25–30 min by car
RM 12 west, about 15 miles
Small square with shops; Jacob's Well is a deep spring with a dangerous cave system — swim only in the marked area.
San Antonio
overnightDoor to door: 50–70 min by car
I-35 south, about 46 miles
Too much for a rushed return day; sleep there and see the missions and the River Walk.
Fredericksburg
overnightDoor to door: 1 h 45 min–2 h by car
US-281 north then US-290 west
Hill Country wine and German food; better as a night than a loop.
Eat & sleepWhich area to sleep in
Eat & sleep
Which area to sleep in
Where to sleep
Areas, not hotels: pick the one that fits your arrival time and plans.
Downtown / The Square
Walk to bars, restaurants and the river put-in; limited parking, some lots tow aggressively.
I-35 frontage road
Chain hotels with free parking, 5–10 min drive from the square; best with a car.
Outlet mall area (south I-35)
Cheapest rooms, walk to the malls, nothing else nearby.
PracticalWhat a day costs, what to watch out for, and the pocket card
Practical
What a day costs, what to watch out for, and the pocket card
Cost per day
- Budget
- $70–110 excl. bed
- Mid
- $120–190 excl. bed
- High
- $200+ excl. bed
Trip budget
| Chain-hotel double room1 × 1 night × US$150 | US$150 |
| Food, local transport, entries2 × 1 day × US$130 | US$260 |
| Tube rental with shuttle, one day2 × US$8 · check | US$16 |
| CARTS local bus ride2 × US$1 · check | US$1 |
| eSIM, about a week of data2 × US$25 | US$50 |
| Buffer 10%Price creep, a taxi you did not plan, one splurge | US$48 |
| Trip total≈ US$263 per person per day, bed included | US$525 |
2026 estimate in US dollars; sales tax is added at the till and flights are excluded. Your choices stay in this browser.
Prices of common things
| Coffee | $3–6 |
| Breakfast tacos | $3–5 each |
| Tex-Mex plate | $12–18 |
| BBQ plate | $15–25 |
| Draught beer downtown | $6–9 |
| Tube rental with shuttle | $8–15 (check) |
| Meadows Center glass-bottom boat | about $10–12 adult (check) |
2026 estimate; check locally.
Watch out
Safety
- Never drive through a flooded low-water crossing — a few inches of moving water can take a car.
- Cell signal drops in the river valley; check your phone at the towel spot before swimming.
- Some downtown lots tow aggressively: read the signs.
- Tubing is seasonal and river flow can close it after dry spells — check before you rent.
Emergency numbers
- Police, fire, ambulance
- 911
Pocket card
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San MarcosSan Marcos, Texas
Pocket card · Voykit
My bed tonight
—
—
—
To this address, pleaseTo this address, please
Emergency
- Police, fire, ambulance911
Embassy
No embassies here; consulates sit in Austin, Dallas and Houston. US visitors: this is a domestic trip — no passport needed beyond ID for flights.
My embassy: —
Fare anchors (2026 estimate)
- AUS airport → San Marcos, rideshare: $45–70, about 35 min (check)
- Taxi or rideshare downtown → outlet malls: $12–20, about 10 min (check)
- CARTS local bus: 50 cents a ride (check)
Say or show
- Where is the river put-in? — Where is the river put-in?
- Two tubes, please — Two tubes, please
- Is the river open for tubing today? — Is the river open for tubing today?
- Can I pay by card? — Can I pay by card?
- Where is the nearest restroom? — Where is the nearest restroom?
- Thanks, y'all — Thanks, y'all
Tipping is expected: 18–22% at sit-down restaurants, $1–2 a drink, 15–20% for taxis and rideshares.
Deep diveWhat this guide covers so far, and its sources
Deep dive
What this guide covers so far, and its sources
Not a trip line yet
This is a basic guide: no airport-to-bed contract, walking clusters or day plans are published for San Marcos. Airport, fare and schedule details are unverified; check the operators before you fly.
What we know, and what is coming
On this page
- Best months: Mar–May, Sep–Nov · avoid Jul–Aug (38°C+ and crowded river), plus graduation weekends in May and December · month by month →
- 2 airports and 3 areas to sleep in
- Weather: a 7-day forecast and monthly averages
- Cost per day in 3 bands
- 5 day-trips, door to door
- 4 things to watch out for, with emergency numbers
Coming as the guide grows
- Airport-to-bed contract for AUS and SAT: last rideshare windows, taxi fallback, overnight rung.
- Four walking clusters with rescue anchors: the square, the river parks, campus, the outlet malls.
- Place pages with verified cutoffs (Meadows Center, LBJ Museum, Calaboose, Wonder World) and eat pages with last orders.
- River-safety and flood fixtures so gates A–D can go green.