August in Austin is hot. Not pleasantly warm, not a dry heat you can shrug off. The average high sits at 36°C (97°F), but the thermometer regularly crosses 38°C (100°F) for stretches of 10 or 15 days running, and the pavement radiates stored heat well past sunset. The low only drops to about 25°C (78°F), so even at midnight you'll feel warmth pressing against your skin. This is the month when locals talk about their electricity bills the way other cities talk about weather, because the AC never stops running.
That said, Austin has spent decades adapting to its own summer. Barton Springs Pool stays a constant 20°C (68°F) year-round, and stepping into that water after a 38°C afternoon is a sensation worth traveling for. The bat colony under the Congress Avenue Bridge hits peak population in August, with an estimated 1.5 million Mexican free-tailed bats spiraling into the dusk sky around 8:15 PM. And because most tourists have the good sense to visit during SXSW in March or ACL Fest in October, August is one of the cheapest and least crowded months of the year. Hotel rates along the I-35 corridor can drop 30-40% below the spring peak.
Be honest with yourself about heat tolerance before booking. If temperatures above 35°C (95°F) make you miserable, August is not your month. But if you can structure your days around early mornings, late evenings, and air-conditioned afternoons, Austin rewards you with shorter lines, lower prices, and a city that feels like it belongs to the people who actually live here.
Why visit in August
- Hotel rates drop 30-40% compared to SXSW (March) and ACL Fest (October) peaks, making downtown properties surprisingly affordable
- The Congress Avenue Bridge bat colony reaches peak population of roughly 1.5 million bats in August, making evening flight spectacles at their most dramatic
- Barton Springs Pool, fed by underground springs at a constant 20°C (68°F), offers genuine relief and is less packed on weekday mornings than during the milder spring months
- Live music venues along 6th Street and Red River Cultural District run normal schedules with smaller crowds, so you can catch shows at Mohawk, Stubb's, or Continental Club without advance tickets
- Local peach and watermelon season peaks at Fredericksburg orchards within 90 minutes of the city, and farmers markets on Saturday mornings sell Hill Country produce at summer-low prices
Worth knowing
- Daytime temperatures regularly exceed 38°C (100°F), making outdoor activities between 11 AM and 6 PM genuinely uncomfortable and potentially dangerous
- The urban heat island effect in downtown Austin means concrete and asphalt radiate stored heat after dark, keeping overnight lows near 25-27°C (77-81°F)
- Ozone levels in Travis County tend to spike in August, and the Texas Commission on Environmental Quality occasionally issues Ozone Action Day alerts that affect sensitive groups
- Lady Bird Lake's water temperature rises above 28°C (82°F), triggering occasional blue-green algae warnings that can restrict swimming for dogs and sometimes people
Best for
Think twice if
August is tied with July as Austin's hottest month. The average high reaches 36°C (97°F), though individual days frequently push past 38°C (100°F). Overnight lows hover around 25°C (78°F), which means you'll feel the warmth even after dark. Humidity sits at about 62%, lower than Gulf Coast cities like Houston but high enough that 36°C feels closer to 40°C in direct sun. Rainfall totals around 107mm across roughly 11 days, typically arriving as brief, intense late-afternoon thunderstorms that drop heavy rain for 20-30 minutes and then clear. Morning fog along Lady Bird Lake burns off by 9 AM most days.
Seasonal caution
- Sustained heat above 38°C (100°F) is common for multi-day stretches. The National Weather Service issues Excessive Heat Warnings for the Austin metro area several times most Augusts. Drink water constantly, seek shade, and avoid prolonged midday sun exposure.
- Ozone Action Days occur periodically in August when hot, stagnant air traps ground-level ozone in the Austin-Round Rock metro area. People with asthma or respiratory conditions should monitor the TCEQ air quality index.
- Late-afternoon thunderstorms can produce dangerous cloud-to-ground lightning, especially near open water like Lake Travis and Lady Bird Lake. Leave the water immediately if you hear thunder.
- Blue-green algae (cyanobacteria) blooms occasionally appear on Lady Bird Lake when water temperatures exceed 28°C (82°F). The City of Austin Watershed Protection Department posts alerts, and dogs are particularly vulnerable.
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
Bat Fest
Mid-to-late August (usually a Saturday evening)
Annual street festival on the Congress Avenue Bridge celebrating Austin's 1.5-million-strong Mexican free-tailed bat colony. Live music on multiple stages, food vendors, and bat-themed activities lead up to the evening bat flight. Typically draws 50,000-100,000 attendees to the bridge and surrounding area along Lady Bird Lake.
Best things to do in August
Sunset bat watching at Congress Avenue Bridge
wildlifeStand on the bridge's pedestrian sidewalk or set up on the grass below along the Ann and Roy Butler Hike-and-Bike Trail. Around 8:15 PM, roughly 1.5 million Mexican free-tailed bats pour out from under the bridge in a dark, swirling column that takes 20-30 minutes to fully emerge. The musky scent of the colony carries on the evening breeze.
August is peak colony population before the fall migration south to Mexico begins in late September.Booking tipThe south side of the bridge and the kayak launch below offer the best vantage points. No tickets needed.
Early morning swim at Barton Springs Pool
swimmingThe 3-acre spring-fed pool in Zilker Park holds a steady 20°C (68°F) year-round. The limestone bottom is visible through the clear, blue-green water. Getting there by 8 AM means you'll share the pool with lap swimmers and a handful of regulars rather than afternoon crowds.
The 16°C temperature difference between the pool and the August air makes the cold plunge feel like a physical reset.Booking tipWeekday mornings before 9 AM tend to have the shortest entry lines.
Live music on Red River Cultural District
nightlifeThe 4-block stretch of Red River Street between 6th and 10th holds Mohawk, Cheer Up Charlies, Empire Control Room, and Stubb's. On any given August night, 3-5 venues run simultaneous shows spanning punk, electronic, country, and hip-hop. The sound bleeds between outdoor stages and the warm air smells like cigarette smoke and barbecue from Stubb's kitchen.
August's low tourist count means walk-up entry at venues that require advance purchase during SXSW or ACL.Booking tipCheck the Austin Chronicle's weekly listings each Thursday for the full schedule.
Kayaking Lady Bird Lake at dawn
outdoorPaddle the 16-km stretch of Lady Bird Lake starting from the Rowing Dock near Zilker Park. The water is glassy before 8 AM, and you'll likely see great blue herons, turtles stacked on logs, and the occasional river otter. The air temperature at 7 AM sits around 27°C (80°F), which feels almost pleasant by August standards.
Morning water temperatures and calm conditions make this the most comfortable window before the heat and afternoon boat traffic arrive.Booking tipArrive at rental outfitters by 7 AM. Most close afternoon rentals on days above 38°C.
Museum hopping along Congress Avenue
cultureThe Blanton Museum of Art at UT Austin houses over 21,000 works, including a strong Latin American collection. The Bullock Texas State History Museum sits 3 blocks north. Both are fully air-conditioned and lightly attended in August. The walk between them on Congress Avenue passes the Capitol building's 94-meter dome.
August heat drives everyone indoors, making this the quietest month for both museums. No school-group crowds either, since UT's fall semester hasn't started.Booking tipUT students and faculty get free Blanton admission, so visiting before the semester starts on August 26 means even thinner crowds.
Tubing the San Marcos River
outdoorThe San Marcos River runs spring-fed and clear about 50 minutes south of Austin along I-35. Water temperature holds near 22°C (72°F) year-round. The float from City Park to Rio Vista Dam takes roughly 2-3 hours and passes through Texas State University's campus area. You'll hear the rush of small rapids and feel cold spring water feeding in from the banks.
August's extreme heat makes a 22°C river feel genuinely cold, and the spring flow keeps water levels reliable even during dry spells.Booking tipGo on a weekday. Weekend crowds on the San Marcos can turn the river into a traffic jam of tubes by noon.
South Congress Avenue evening stroll
neighborhoodThe stretch of South Congress between Oltorf and Barton Springs Road fills with shops, food trailers, and live music spilling from open doors. August evenings cool to around 32°C (90°F) after sunset, which is the closest thing to comfortable this month offers. The neon signs of the old motels glow against the dusk sky.
Restaurant patios and shops that run 45-minute waits during spring and fall festivals seat walk-ins within minutes in August.Booking tipStart walking around 7:30 PM when the sun drops low enough that the west-facing storefronts are in shadow.
What to eat in August
In season: fruit
Hill Country peaches
Fredericksburg peach orchards about 90 minutes west of Austin hit late-season harvest in August. Stonewall and Gillespie County farms sell directly, and Austin farmers markets at Mueller and HOPE carry the fruit at peak ripeness. The taste is noticeably sweeter than grocery store peaches, with a perfume-like aroma.
Texas watermelon
August is peak melon season across central Texas. Vendors at the SFC Farmers' Market Downtown sell whole melons and fresh-cut slices on Saturday mornings. The crunch and sweetness of a cold watermelon slice in 38°C heat is a sensory reward.
Street food peaks
Smoked brisket snow cones
A few Austin barbecue trailers have started pairing shaved ice with savory toppings in summer. Franklin Barbecue's line moves slowly enough that the nearby ice vendors on East 11th Street do steady business. The combination of sweet, icy crunch and smoky salt seems odd until you try it in triple-digit heat.
Elote and esquites
Mexican street corn appears at nearly every Austin farmers market and food truck park during August. The charred kernels come slathered in mayo, cotija cheese, and Tajín. Vendors at the East Riverside food truck lots tend to offer both on-cob elote and cup-style esquites.
What to drink
Micheladas
Austin's Tex-Mex restaurants lean heavily into micheladas during August. The drink blends beer, lime, tomato juice, chamoy, and Tajín over ice, and it appears on practically every South Congress and East 6th Street patio menu. The cold, salty tartness feels engineered for this specific heat.
Regular events in August
Austin Chronicle Hot Sauce FestivalFree
Annual celebration at Fiesta Gardens where local restaurants and home cooks enter their salsas and hot sauces for public tasting and judging. Typically features 300-400 entries across categories from mild to extreme. Live music runs throughout the afternoon.
Late August (usually last Sunday)Ice Cream Festival
A gathering of Austin's ice cream makers at Fiesta Gardens with live music and family activities. Local creameries like Lick Honest Ice Creams and Amy's Ice Creams set up booths alongside smaller producers. The line for tasting tickets tends to wrap around the park by midday.
Mid-August (Saturday)First Thursday on South CongressFree
Monthly art walk where South Congress galleries and shops extend hours into the evening. Street musicians set up along the sidewalks, and food trucks cluster near the intersections. The August edition is notably less packed than the spring and fall versions.
First Thursday of AugustBlues on the GreenFree
Free outdoor concert series at Zilker Park that sometimes extends into early August. Austin-based acts perform on a temporary stage near the Great Lawn, and attendees spread blankets across the hillside. The warmth radiates up from the grass even after sundown.
Early August (if the series extends past July)Best places this August
Barton Springs Pool
swimmingA 3-acre, spring-fed swimming pool in Zilker Park that maintains a constant 20°C (68°F). The limestone bottom dates back thousands of years, and the water runs so clear you can see every pebble from the surface. In August, the contrast between the cold water and the 38°C air creates a shock that takes your breath for a full second.
ZilkerCongress Avenue Bridge (bat colony)
wildlifeHome to North America's largest urban bat colony. The 1.5 million Mexican free-tailed bats roost in the bridge's expansion joints and emerge at dusk in a column visible from blocks away. The musty smell of the colony drifts up through the bridge deck on still evenings.
DowntownHamilton Pool Preserve
swimmingA collapsed grotto about 37 km west of Austin along Highway 71, where a 15-meter waterfall drops into a jade-colored swimming hole. The limestone overhang provides natural shade. Travis County requires reservations for entry, and August slots fill within days of opening.
Bee Cave areaMount Bonnell
viewpointThe 240-meter summit is one of the highest points in Austin. The 102-step limestone staircase takes about 10 minutes to climb. Go at sunrise, around 6:45 AM in August, when the temperature is still in the upper 20s and the view of Lake Austin catches the early light.
West AustinThe Blanton Museum of Art
museumUT Austin's art museum holds over 21,000 works with particular depth in Latin American art. Ellsworth Kelly's Austin, a freestanding stone building with colored glass windows, sits on the museum grounds and catches the August light in ways that shift throughout the day.
UT CampusZilker Park and Botanical Garden
parkThe 140-hectare park anchors South Austin's green space along Barton Creek and Lady Bird Lake. The botanical garden's Japanese Garden section stays cooler under tree canopy. In August, the park is noticeably quieter than the spring months when ACL fencing goes up.
ZilkerEast 6th Street and Rainey Street
nightlifeTwo distinct nightlife districts within walking distance of each other. East 6th between I-35 and Chicon has a more local, indie feel with craft cocktail bars in converted bungalows. Rainey Street's renovated houses hold bars with backyard patios strung with lights. August evenings on Rainey still feel warm, but the misting systems most bars have installed take the edge off.
Downtown
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Insider tips
The locals-only swimming spot is Deep Eddy Pool in West Austin, a spring-fed public pool that's less famous than Barton Springs but often less crowded on weekday mornings. It opened in the 1930s and still charges minimal admission.
Austin's tap water tastes noticeably better than most Texas cities because it comes from the Highland Lakes system. Fill your bottle from any tap rather than buying bottled water.
If you're watching the bats from the Congress Avenue Bridge, the south side of the bridge gives a better viewing angle than the north. The bats fly south and east, so standing on the south sidewalk puts the colony's flight path directly in front of you.
The best barbecue strategy in August is to hit la Barbecue on East Cesar Chavez rather than Franklin. The line at la Barbecue is typically 60-90 minutes shorter, and the beef ribs compete on quality. Both open at 11 AM and sell out, but August's lower tourist count pushes sell-out times later.
H-E-B grocery stores are a genuine Austin experience. The flagship location on South Congress stocks local products, fresh tortillas made in-store, and a surprisingly good prepared food section. Locals treat H-E-B the way other cities treat Whole Foods.
The free downtown MetroRail shuttle (Route 801) runs along Congress Avenue and Lavaca Street. It connects most of the downtown hotels to the Rainey Street and East 6th Street areas without needing a ride-share app.
Avoid these mistakes
- Scheduling outdoor activities between noon and 5 PM. Locals clear the streets during these hours for a reason. The heat index regularly exceeds 43°C (110°F) in direct sun, and heat exhaustion sets in faster than most visitors expect.
- Underestimating hydration needs. The combination of 36°C heat and 62% humidity means you lose water faster than you feel thirsty. By the time you notice, you're already mildly dehydrated. Carry water everywhere and drink before you feel the need.
- Skipping sunscreen for a short walk. The UV index hits 10-11 in August, and a 15-minute walk from your hotel to a restaurant can produce a visible burn on unprotected shoulders and nose.
- Assuming Lady Bird Lake is safe for swimming. The lake is designated for boating only, not swimming, partly due to recurring blue-green algae blooms in summer. Barton Springs, Deep Eddy, and the San Marcos River are the proper swimming spots.
- Wearing jeans or dark clothing. It sounds obvious, but visitors from cooler climates regularly arrive in dark denim and discover within an hour that light-colored, loose-fitting fabric is not optional in Austin's August.
Practical tips for August
Structure your day in three blocks. Early morning (6-10 AM) for anything outdoors, including hikes, swimming, and farmers markets. Midday (11 AM-5 PM) for air-conditioned activities like museums, restaurants, and shopping. Evening (6 PM onward) for live music, bat watching, and patio dining once the temperature drops below 35°C. Most Austin restaurants are accustomed to this pattern and see their heaviest covers after 7:30 PM in summer. Book Hamilton Pool Preserve at least 2 weeks ahead through the Travis County reservation system, as August slots fill quickly. Ride-share apps work well across central Austin, but surge pricing spikes during Bat Fest weekend and on Friday and Saturday nights along 6th Street.
FAQ
Is August a good time to visit Austin, Texas?
Honestly, August is one of the toughest months to visit Austin. The average high reaches 36°C (97°F) and frequently exceeds 38°C (100°F) for days at a stretch. That said, if you can tolerate the heat, you'll find hotel rates 30-40% below the SXSW and ACL Fest peaks, minimal crowds at normally packed restaurants and venues, and the Congress Avenue Bridge bat colony at its peak population of 1.5 million. It's a trade-off, but a legitimate one for budget-minded travelers.
How hot does Austin get in August?
The average high is 36°C (97°F), but individual days regularly hit 38-40°C (100-104°F). Overnight lows only drop to about 25°C (78°F), so the heat never fully breaks. Humidity around 62% makes the perceived temperature feel 3-4 degrees higher in direct sun. The National Weather Service issues Excessive Heat Warnings for the Austin metro area multiple times in a typical August.
What is there to do in Austin in August when it's too hot to go outside?
The Blanton Museum of Art at UT Austin houses over 21,000 works. The Bullock Texas State History Museum sits 3 blocks north on Congress Avenue. The live music scene runs year-round and is almost entirely indoors or under cover. South Congress Avenue's shops and vintage stores are air-conditioned. And the Alamo Drafthouse Cinema chain started in Austin and still operates several locations with full food and drink service during screenings.
Can you swim at Barton Springs Pool in August?
Barton Springs Pool is open for swimming year-round and is arguably at its best in August. The spring-fed water holds a constant 20°C (68°F), which feels bracingly cold when the air temperature is 38°C. The pool opens at 5 AM for early-morning lap swimming and stays open until 10 PM. Weekday mornings before 9 AM typically have the shortest wait for entry.
When do the bats fly out from the Congress Avenue Bridge in August?
The bats typically emerge around 8:15 PM in early August, shifting to about 8:00 PM by month's end as the days shorten. The full emergence takes 20-30 minutes. The colony reaches its peak population of roughly 1.5 million bats in August before the fall migration to Mexico begins. Bat Fest, the annual celebration on the bridge, usually falls on a Saturday in mid-to-late August.
Is August a cheap time to visit Austin?
August is one of the most affordable months. Hotel rates across downtown and South Congress typically run 30-40% below the March SXSW peak and 20-30% below October's ACL Fest rates. Restaurants that require reservations weeks ahead during festival season seat walk-ins within minutes. Airfare into Austin-Bergstrom International stays moderate because back-to-school travel partially offsets the tourism dip.
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