September in Austin still feels like summer. That is the first thing you need to know. Daytime highs average 33.4°C (92°F), and while locals will tell you the heat is "almost over," it tends to linger through most of the month. The real shift happens in the final week, when mornings might dip below 21°C (70°F) and the air carries something less punishing. That said, September has a different energy than the dog days of July and August. The University of Texas campus fills back up with 50,000-plus students, Longhorns football takes over Saturday culture across the entire city, and the creative calendar picks up after summer's quiet stretch.
For visitors, September is a transitional month. You'll find lower hotel rates than the October rush that comes with Austin City Limits Music Festival, and restaurant reservations are easier to get than during SXSW in March. The Hatch chile harvest floods menus across town with seasonal specials, and Fantastic Fest brings genre film fans from around the world to the Alamo Drafthouse South Lamar in the final week of the month. The trade-off is simple. You're still dealing with Central Texas heat, and outdoor plans need to be front-loaded into mornings or pushed to evenings.
To be fair, September is not the month that makes Austin famous. That honor goes to March and October. But if you can tolerate warm weather and you'd rather avoid the crowds and price spikes of festival season, it's a window worth considering. The swimming holes still feel perfect at 33°C, the bats still spiral out from under Congress Avenue Bridge at dusk, and the city has a comfortable, lived-in rhythm that peak months tend to displace.
Why visit in September
- Hatch chile season peaks across Austin's restaurants and taquerias, with limited-run menus at spots throughout East Austin and South Congress lasting only 4 to 6 weeks
- Hotel rates run 20-30% below October's ACL Festival pricing, and 15-20% below SXSW rates in March
- UT Longhorns football creates an electric Saturday atmosphere centered on Darrell K Royal-Texas Memorial Stadium and the surrounding tailgate zones along San Jacinto Boulevard
- Fantastic Fest, the largest genre film festival in the U.S., fills the last week of September with screenings, filmmaker Q&As, and after-parties concentrated around South Lamar
- Barton Springs Pool and the swimming holes along the Greenbelt are still warm enough for comfortable swimming, with thinner crowds than the June-August peak
Worth knowing
- Daytime heat still averages 33.4°C (92°F), which limits comfortable outdoor time to before 10 a.m. and after 6 p.m.
- Occasional late-season heat waves can push temperatures above 38°C (100°F) for 2-3 consecutive days, particularly in the first two weeks
- The humidity at 59% is noticeable, though lower than Gulf Coast cities. Combined with the heat, midday walks along Lady Bird Lake or through Zilker Park feel draining.
- Limited marquee cultural programming compared to October (ACL) and March (SXSW), so the trip-defining event calendar is thinner
Best for
Think twice if
September in Austin is still a warm month by any honest measure. The average high sits at 33.4°C (92°F), though the first week or two can occasionally spike above 38°C (100°F) during late-season heat events. Overnight lows hover around 22.6°C (73°F), which means evenings on Rainey Street patios are warm but manageable. Rainfall drops to 58mm across roughly 6 rainy days, making September one of the drier months in Austin's calendar. That's a noticeable change from May's 213mm and June's 106mm. Humidity averages 59%, which is moderate for Central Texas. By the final week, you might start catching cooler mornings below 21°C, though that's not guaranteed. The sun stays strong, and UV index remains high through the month.
Seasonal caution
- Late-season heat waves in early September can push temperatures above 38°C (100°F) for multi-day stretches. These events are not rare. Check the 10-day forecast before booking outdoor-heavy itineraries.
- UV index in September regularly reaches 8-10 (very high). Sunburn happens fast, even on partly cloudy days. Reapply sunscreen every 90 minutes if you're at Barton Springs or on Lady Bird Lake.
- Flash flooding is infrequent in September's 58mm rainfall, but Central Texas storms can be intense when they arrive. The low-water crossings in the Hill Country west of Austin close rapidly during downpours. Never drive through a flooded crossing.
Year-round climate
Averages from the last 5 years.
| Month | Avg high (°C) | Avg low (°C) | Rainfall (mm) |
|---|---|---|---|
| Jan | 16 | 5 | 88 |
| Feb | 18 | 6 | 60 |
| Mar | 24 | 12 | 75 |
| Apr | 27 | 16 | 131 |
| May | 30 | 20 | 213 |
| Jun | 34 | 24 | 106 |
| Jul | 35 | 25 | 122 |
| Aug | 36 | 25 | 107 |
| Sep | 33 | 23 | 58 |
| Oct | 29 | 18 | 97 |
| Nov | 22 | 12 | 83 |
| Dec | 19 | 10 | 51 |
Headline events
Fantastic Fest
Late September (typically starting around September 18-22 and running through late September)
The largest genre film festival in the United States, spanning horror, sci-fi, action, and cult cinema. Runs for about 8 days at Alamo Drafthouse South Lamar with 100-plus film screenings, filmmaker Q&As, secret screenings, and late-night parties. It draws film fans and industry professionals from across the world.
Best things to do in September
Swim at Barton Springs Pool
outdoorThe 3-acre natural spring-fed pool in Zilker Park holds a constant 20°C (68°F) year-round. In September, the cold water is a genuine relief after a 33°C afternoon. The pool is 305 meters long, fed by underground springs from the Edwards Aquifer, and surrounded by pecan trees and sloping grass banks where locals spread towels and read.
September heat makes the constant 20°C water feel ideal, and summer crowds thin noticeably after Labor Day weekend. Morning lap swim before 10 a.m. is the quietest window.Booking tipArrive before 9 a.m. on weekdays to avoid any wait. The pool closes for cleaning on Thursdays until mid-morning.
Watch the Congress Avenue Bridge bat colony
wildlifeBetween 750,000 and 1.5 million Mexican free-tailed bats roost under the Congress Avenue Bridge from March through October. At dusk, they pour out in a dark, rippling stream that takes 20-45 minutes to fully emerge. The best vantage point is the pedestrian sidewalk on the bridge's east side, or the grassy slope of the Austin American-Statesman lot on the south bank.
September is the tail end of bat season, with the colony still near peak numbers before they migrate south in late October. Sunset times around 7:30 p.m. make it convenient to watch after dinner.Booking tipFree to watch from the bridge or shoreline. Kayak tour operators on Lady Bird Lake run sunset bat-watching paddles that offer a water-level view.
Attend a UT Longhorns football game
sportsLonghorns home games at the 100,000-seat Darrell K Royal-Texas Memorial Stadium are all-day affairs. Tailgating starts by mid-morning along San Jacinto Boulevard and in the lots near the LBJ Library. The Bevo Boulevard fan zone opens 4 hours before kickoff with live music and food vendors. Inside the stadium, 100,000 fans singing "The Eyes of Texas" after a win is a genuine sensory experience, loud enough to feel in your chest.
September has 2-3 home games, including early-season matchups. The atmosphere is energized by the fresh start of the season, and tickets tend to be more available than for rivalry games later in the fall.Booking tipBuy tickets through the UT athletics site or verified resellers. Parking near campus fills early on game days, so the Capital Metro game-day shuttle from downtown is the easier option.
Explore the East Austin studio scene
cultureEast Austin's warehouse district along Springdale Road and Bolm Road holds dozens of working artist studios, printmakers, and ceramicists. September is when studios start gearing up for the East Austin Studio Tour in November, so many artists are mid-production and willing to talk about their process. The neighborhood sits between the old Mueller Airport redevelopment and the breweries along Airport Boulevard.
Artists are actively building new bodies of work for the November studio tour, and galleries along East Cesar Chavez and Chicon Street tend to open new fall shows in September.Booking tipMost studios are free to visit during posted hours. Check individual studio social media accounts for open-studio dates in September.
Hike the Barton Creek Greenbelt at dawn
outdoorThe Greenbelt runs roughly 12 kilometers through Austin's limestone canyon country, with swimming holes at Sculpture Falls, Twin Falls, and Campbell's Hole along the way. The trail passes through juniper-cedar forest and over exposed limestone ledges. In September, the creek pools still hold enough water for wading, and the morning air before 9 a.m. is cool enough to make the rocky terrain enjoyable.
September mornings offer a brief window of tolerable hiking temperatures before the heat builds. Summer's heavy use tapers off, and the trail is quieter than July or August.Booking tipFree access. Park at the Barton Creek Greenbelt trailhead off Spyglass Drive or the Gus Fruh access point. Arrive by 7:30 a.m. on weekends for reliable parking.
Browse the SFC Farmers' Market Downtown
foodThe Sustainable Food Center's Saturday market at Republic Square Park runs year-round and peaks in late summer with Texas-grown produce. September brings the last of the okra, the first of the fall squash, Hatch chiles from New Mexico, pecans from Central Texas groves, and local honey from the surrounding Hill Country. Around 50 vendors set up between 9 a.m. and 1 p.m.
September is the crossover month between summer and fall harvests, so the variety is wider than most of the year. Hatch chiles and fresh figs appear alongside early pumpkins and winter squash.Booking tipThe market is free to enter. Bring cash for smaller vendors. The best selection is between 9 and 10:30 a.m., before popular items sell out.
Catch a show on Red River Street
nightlifeThe Red River Cultural District between East 6th and East 8th Streets packs in live music venues within a few blocks. Mohawk, Stubb's BBQ, Cheer Up Charlies, and Empire Control Room all run regular September lineups. The booking calendar picks up after summer's slower stretch, and the outdoor stages at Mohawk and Stubb's are tolerable by evening when temperatures drop below 28°C.
September marks the return of full booking calendars after summer's slower months, but before the October ACL spillover shows drive up cover charges and crowd sizes.Booking tipCheck venue websites for lineups. Weeknight shows tend to have shorter waits and smaller covers than Friday and Saturday bookings.
What to eat in September
In season: fruit
Texas figs
The tail end of Texas fig season runs through early September. Brown Turkey and Celeste varieties show up at the SFC Farmers' Market Downtown and on restaurant menus, often paired with local goat cheese or folded into preserves. The window is short, typically gone by mid-month.
On menus now
Smoked brisket tailgate plates
Brisket is year-round in Austin, but football season transforms it into a communal event. Tailgate lots around Darrell K Royal-Texas Memorial Stadium fill with portable smokers on Saturday mornings, and the neighborhood spots along East 11th and 12th Streets sell plate specials built around slow-smoked brisket, sausage links, and sides of pinto beans and coleslaw.
Street food peaks
Elote and esquites
Grilled corn season overlaps with football tailgates and the Hatch chile harvest. Street vendors near the UT campus and along East Cesar Chavez sell elote slathered in mayo, cotija, and chile powder, or esquites served in cups. The charred-corn smell drifts through evening markets at the Hope Farmers Market on Sundays.
In markets
Hatch green chiles
The brief Hatch chile season (late August through September) means roasting bins appear outside grocery stores and taquerias across Austin. Restaurants from East Sixth to South Congress run limited Hatch menus, putting the chiles into everything from queso to burgers to tamales. The roasting smell, smoky and sharp, is September's signature scent in Austin.
Regular events in September
UT Longhorns home football games
2-3 home games at Darrell K Royal-Texas Memorial Stadium through September, each drawing 100,000 fans and transforming the campus and downtown into a daylong tailgate. The burnt-orange wave is visible from blocks away.
Saturdays in SeptemberPecan Street FestivalFree
Biannual arts and crafts festival on historic East 6th Street (originally named Pecan Street) featuring over 200 artisan booths, live music on multiple stages, and food vendors spanning 6 blocks. One of Austin's longest-running street festivals, held since 1978.
Third weekend of SeptemberTexas Craft Brewers Festival
Annual gathering of 200-plus Texas craft breweries at Fiesta Gardens on the south shore of Lady Bird Lake, with tastings, food trucks, and live music. Typically features 500-plus beers from breweries across the state.
Late SeptemberBat Fest
Annual celebration of the Congress Avenue Bridge bat colony, held on the bridge and surrounding streets with live music, bat-themed vendors, food stalls, and a mass viewing of the evening bat emergence. Draws around 100,000 attendees.
Late August or early SeptemberBest places this September
Barton Springs Pool
outdoorA 3-acre, spring-fed swimming pool in Zilker Park kept at a constant 20°C (68°F) by the Edwards Aquifer. The 305-meter pool is surrounded by pecan trees and grassy slopes. September's heat makes the cold springs particularly refreshing, and post-Labor Day crowds thin noticeably.
ZilkerCongress Avenue Bridge
wildlifeHome to the largest urban bat colony in North America, with 750,000 to 1.5 million Mexican free-tailed bats emerging at dusk from March through October. The pedestrian sidewalk on the east side offers the best free viewing spot. September sunsets around 7:30 p.m. time the emergence conveniently.
DowntownSouth Congress Avenue (SoCo)
shoppingThe stretch of South Congress between Oltorf Street and the bridge holds a dense mix of vintage shops, boot stores, restaurants, and hotels. September foot traffic is lighter than during March's SXSW or October's ACL, so the sidewalks feel walkable and the restaurant wait times shorter.
South CongressLady Bird Lake Hike-and-Bike Trail
outdoorA 16-kilometer paved loop around Lady Bird Lake, passing through downtown, Zilker Park, and the east-side boardwalk. September mornings before 9 a.m. are the comfortable window, when the trail is busy with runners and cyclists but the heat hasn't peaked.
DowntownBlanton Museum of Art
museumThe University of Texas art museum on the east side of campus holds a permanent collection of over 21,000 works, including a strong Latin American and contemporary collection. The building is aggressively air-conditioned, making it a reliable midday escape from September's heat.
UT CampusThe Hope Farmers Market
foodSunday morning market at Plaza Saltillo on East 5th Street, with local produce, prepared foods, coffee, and live music. Smaller and more neighborhood-focused than the SFC market, with an East Austin creative-community feel. September Sundays bring Hatch chiles, fresh tamales, and cold-brew vendors.
East AustinMount Bonnell
outdoorA 236-meter limestone bluff overlooking Lake Austin and the western hills, accessed by 102 stone steps from the parking area. The view from the top stretches across the Hill Country. Go at dawn or dusk in September. The exposed stairs are punishing in midday heat.
West Austin
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Insider tips
The Barton Springs spillover pool, on the downstream side of the dam, is free to enter and rarely crowded, even on weekends. The water is the same spring-fed 20°C, and the grassy banks are shaded by old-growth pecans.
UT home football Saturdays transform the entire campus area. If you're not attending the game, avoid the Guadalupe Street and San Jacinto Boulevard corridors between 8 a.m. and 2 hours after kickoff. Traffic and parking are gridlocked.
The best Hatch chile roasting happens at grocery stores and taquerias in East Austin, where you can buy a bag freshly roasted and still warm. The smoky, capsaicin-heavy smell clings to your clothes for the rest of the day.
Fantastic Fest badges sell out well before September. If you missed the badge sale, individual screening tickets sometimes open up a few days before the festival through the Alamo Drafthouse ticketing system.
September sunsets from the Pfluger Pedestrian Bridge, which crosses Lady Bird Lake near Lamar Boulevard, are some of the best in the city. The bridge faces west, and the sky over the Hill Country turns orange and pink most clear evenings around 7:30 p.m.
Avoid these mistakes
- Scheduling outdoor activities between 11 a.m. and 5 p.m. without a plan for shade or air-conditioned breaks. The 33°C heat combined with 59% humidity is more draining than the temperature alone suggests, and heat exhaustion is a real risk on the Greenbelt.
- Assuming September weather is "fall weather" because school has started. Austin doesn't see consistent sub-27°C highs until mid-to-late October. Pack for summer, not autumn.
- Driving into low-water crossings in the Hill Country after rain. Central Texas flash floods are fast and powerful. The crossings west of Austin along Hamilton Pool Road and Bee Cave Road flood with little warning during heavy storms.
- Skipping reservations at popular restaurants because it's not festival season. September is quieter than March or October, but Friday and Saturday dinner at spots along South Congress, Rainey Street, and East 6th still requires booking 2-3 days ahead.
- Trying to park near campus on a football Saturday without a game-day pass. The streets around UT are closed or permit-only on home-game days. Use the Capital Metro shuttle from downtown instead.
Practical tips for September
Book hotels at least 3 weeks out, especially for weekends with UT home games, when downtown rooms fill with visiting fans. September sits between summer's low demand and October's ACL Festival spike, so rates are moderate but game weekends can sell out. For Fantastic Fest in the final week, the South Lamar area books up fast. Restaurants along South Congress and East 6th are easier to get into than during SXSW, but Friday and Saturday dinner still benefits from a reservation. Public transit via Capital Metro covers downtown and the UT campus area well, and the MetroRail Red Line runs from downtown to the northern suburbs. Rideshare is widely available but prices rise on football Saturdays and Fantastic Fest nights. Carry water everywhere. Austin's tap water is safe and most cafes will refill your bottle. The Greenbelt trailheads have no water service, so bring your own supply.
FAQ
Is September a good time to visit Austin?
September is a fair month to visit. The heat is still strong at 33.4°C (92°F), which limits outdoor comfort to mornings and evenings. But hotel rates run 20-30% below October's ACL Festival pricing, the Hatch chile harvest fills restaurant menus with seasonal specials, and Fantastic Fest in the final week draws genre film fans from around the world. It's a trade-off between lower costs and summer-like temperatures.
How hot is Austin in September?
Average highs reach 33.4°C (92°F) with overnight lows around 22.6°C (73°F). The first two weeks can occasionally spike above 38°C (100°F) during late-season heat events. Humidity averages 59%, which is moderate but noticeable. By the final week, mornings might dip below 21°C, though that is not guaranteed in any given year.
What events happen in Austin in September?
Fantastic Fest, the largest genre film festival in the U.S., runs for about 8 days in late September at the Alamo Drafthouse South Lamar. UT Longhorns football has 2-3 home games at the 100,000-seat Darrell K Royal-Texas Memorial Stadium. The Pecan Street Festival takes over East 6th Street for a weekend of artisan booths and live music, and the Texas Craft Brewers Festival typically lands in late September.
Can you still swim at Barton Springs in September?
Barton Springs Pool is open year-round and fed by underground springs at a constant 20°C (68°F). September is one of the best months to swim there, because the 33°C air temperature makes the cold spring water feel ideal, and post-Labor Day crowds thin noticeably from the summer peak.
Is September cheaper than October in Austin?
Typically, yes. October brings the Austin City Limits Music Festival, which drives hotel rates up 20-30% and fills downtown accommodations weeks in advance. September sits in a shoulder period between summer's lower demand and the ACL spike. The exception is UT home football weekends, when downtown hotels see a modest premium from visiting fans.
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