August is the hardest, hottest stretch of the Texas year, but it is also a hinge: even as the heat peaks, fall migration quietly begins. The best of August's nature still happens in the first two hours after sunrise and the last hour before dark.
Week by week in August
July 30 – August 5
- Southbound shorebird migration begins along the coast as sandpipers and plovers gather on mudflats and beaches.
- Frostweed and mistflower start their late-summer bloom, building the nectar supply for the fall monarch push to come.
- It is fall-garden planting season; set out broccoli, cabbage, and more fall tomatoes, shading new plants until established.
- The Perseid meteor shower begins to ramp up; watch the northeast after midnight for early streaks before its mid-month peak.
August 6–12
- Hummingbird traffic surges as black-chinned and ruby-throated birds fuel up; refresh feeders often in the August heat.
- Mexican hat persists on dry roadsides and the first fall asters and frostweed feed queens and gulf fritillaries.
- Keep the fall vegetable garden going in: sow beans, squash, and cucumbers and transplant cole crops under shade cloth.
- The Perseid meteor shower peaks around August 12, the year's most reliable show; watch the northeast after midnight.
August 13–19
- Fall hummingbird migration peaks at central Texas feeders; both black-chinned and ruby-throated hummers swarm fresh sugar water.
- Mexican hat blooms on into late summer while gulf-coast goldenrod and frostweed open for the building butterfly season.
- Transplant fall tomatoes and peppers now; keep everything mulched and watered early through the last of the heat.
- The Milky Way still arches high overhead at nightfall; this is one of the year's best months for dark-sky viewing in Texas.
August 20–26
- Watch for early-migrating warblers, vireos, and flycatchers moving south through wooded edges and along the coast.
- Gulf fritillaries and queens crowd the lantana and mistflower as the late-summer nectar bloom hits its stride.
- Continue fall planting of greens and root crops; harvest peppers, okra, and Southern peas through the heat.
- The Summer Triangle stands high overhead while Scorpius sinks lower in the southwest, marking the slow turn toward autumn.
August 27 – September 2
- Fall songbird migration builds; the upper coast collects warblers, buntings, and orioles staging before the Gulf crossing.
- Cedar elms put out their small fall bloom and prairie goldenrod opens, feeding the gathering migratory butterflies.
- Set out the last fall tomato transplants and sow leafy greens; cooler nights ahead will ease establishment.
- The bright stars of the Summer Triangle still rule the evening, but Pegasus and its Great Square rise in the east.
Birds This Month
August feels like the dead of summer, but for birds it is the leading edge of fall. The first shorebirds are already moving south through Texas — adults that have finished nesting in the Arctic turn up on mudflats, sewage ponds, and the coast well before the weather changes. Look for long-billed dowitchers, lesser yellowlegs, and the first peeps along the upper coast and at inland reservoirs as water levels drop.
At feeders, the headline is hummingbirds. Black-chinned hummingbirds in central and west Texas and ruby-throated hummingbirds in the east surge in number now as this year's young and the first southbound migrants pile in. By late August the first rufous hummingbirds from the Rockies begin to show. Keep nectar fresh — change it every two to three days in this heat — and add a second feeder to cut down on the squabbling.
Out on the open country and along the coast, purple martins are staging in enormous roosts before they leave for South America; the bridge and lake roosts around Austin, Houston, and other cities can hold hundreds of thousands of birds swirling in at dusk. The first songbird migrants — yellow warblers, orchard orioles, and a few flycatchers — slip through the trees at coastal migrant traps like High Island and the Hill Country motts.
This month's tip: bird at dawn and find water. A shaded dripper or shallow basin will pull in more migrants than any amount of seed in August heat.
What's Blooming
August is the bottom of the wildflower year in much of Texas, but the toughest natives carry it, and the first fall bloomers are stirring. Mexican hat still lines dry roadsides statewide, and Maximilian sunflower begins its tall golden run across the Blackland Prairie and Hill Country — a plant that will only get showier through September.
The most important August development is the start of the fall nectar season. Gregg's mistflower (a low, blue-flowered eupatorium) and fall-blooming frostweed begin opening in the Hill Country and central Texas, and both are magnets for the butterflies and migrating monarchs that will pour through in the coming weeks. Along the coast, seaside goldenrod and turk's cap keep the dunes and shaded edges in flower.
Where to see it: the LBJ Wildflower Center in Austin and any prairie remnant with Maximilian sunflower coming on. Visit early — the flowers and their insects are both at their best before the midday heat shuts everything down.
Garden This Month
August is the pivot of the Texas vegetable year — the month you stop only defending and start planting again for fall. The single most important job is setting out fall tomato transplants: put them in now, while it is brutally hot, so they are established and ready to set fruit when nights finally drop in late September and October. Peppers, eggplant, and a fresh round of okra, Southern peas, and cucumbers can go in alongside them.
Success in August is mostly about water and shade. Mulch two to three inches deep, water deeply and early so roots run cool and leaves dry before night, and rig shade cloth over new transplants for their first couple of weeks. Indoors or in a shaded nursery bed, start broccoli, cabbage, and cauliflower from seed now for transplanting in September. Keep the soil moist; nothing germinates in baked, dry ground.
Zone 8a (north & north-central Texas): this is fall-tomato month — set out transplants early in August so they can size up and set fruit once nights cool in late September. Shade new transplants and water deeply; you can also start broccoli and cabbage from seed indoors for September setting-out.
Zone 8b (central Texas): plant fall tomatoes, peppers, and a second round of bush beans now, and keep okra and Southern peas going strong. Mulch heavily and water in the morning to carry transplants through the worst of the heat.
Zone 9a (Gulf coast & south): set out fall tomato and pepper transplants and sow Southern peas, okra, and cucumbers. Afternoon shade cloth over young plants makes the difference between survival and scorch.
Zone 9b (deep south Texas): garden in the cool of the morning, keep heat-lovers (okra, Southern peas, Malabar spinach) producing, and start fall tomato transplants in shade for an autumn-into-winter crop.
What's at the Farmers Market
August is the tail of summer's bounty. Watermelon is at its peak — look for a creamy-yellow ground spot where it sat on the field and a dull, hollow thump when you tap it, and store whole melons at room temperature, refrigerating only once cut. Cantaloupe should smell sweet at the stem end and give slightly to a press; let firm ones finish ripening on the counter.
The last of the Hill Country peaches from the late-season orchards are still around early in the month — choose fragrant fruit that yields to a gentle squeeze and ripen it on the counter before chilling. Okra is in full swing; pick pods no longer than your finger, since larger ones turn woody, and use them within a few days. Field tomatoes, eggplant, peppers, and summer squash round out the stalls.
August market shopping is best done at opening time — go early for the freshest selection and to beat the heat that wilts both produce and shoppers by mid-morning.
Night Sky This Month
August is one of the best stargazing months of the Texas year, and the highlight is the Perseid meteor shower, which peaks around the night of August 11–12. From a dark site you may see dozens of meteors an hour after midnight, when the radiant in Perseus rides high in the northeast; the warm, settled nights make for comfortable all-night watching.
The summer Milky Way is at its glorious best. After full dark, the core of the Milky Way stands high in the south through Sagittarius and Scorpius, with the reddish star Antares marking the scorpion's heart. Overhead, the three bright stars of the Summer Triangle — Vega, Deneb, and Altair — dominate the sky. The dark skies of the Big Bend region and the Davis Mountains around McDonald Observatory are unmatched for this.
Moonlight can wash out a meteor shower entirely, and planet positions shift from year to year — the printable Texas night-sky guide lists this year's exact Perseid viewing nights, moon phase, and planet visibility from your latitude.
Butterflies & Pollinators
August is high butterfly season in Texas, and the resident broods are at full strength while the first hints of fall migration appear. Gulf fritillaries — bright orange with silver-spangled underwings — work passionflower vines across the eastern and coastal state, and queens, the monarch's russet cousin, drift in growing numbers through milkweed and the opening mistflower. Black and pipevine swallowtails patrol gardens and wooded edges.
Monarchs are still mostly to the north, but August is when you prepare for them. The Gregg's mistflower and frostweed beginning to bloom now will become critical fuel stations when the great fall monarch migration funnels through Texas in the weeks ahead. A few early monarchs may already drift south through the Panhandle and west Texas late in the month.
To bring them in: keep native milkweed (antelope-horns and green milkweed) and passionflower healthy, and plant a fall nectar succession of mistflower, lantana, frostweed, and zinnias. A shallow puddling spot of damp sand draws males to drink in the heat.
Trees This Month
Late summer is a quiet stretch for tree change — the real events are spring leaf-out and fall color — but a few things are worth watching. Pecans, the state tree, carry swelling green nutlets that are filling toward the October-into-November harvest, and a heavy crop year shows now in the loaded branches. Live oaks hold their deep-green summer canopy, unbothered by the heat.
In the Hill Country, bald cypress along the spring-fed rivers is still soft feathery green, months from its rusty November color but at its most graceful shading the swimming holes. In west and south Texas, mesquite hangs heavy with long seed pods now, and a few stressed trees — and the first turning cedar elms — may drop or yellow a scattering of leaves early in response to drought rather than season.
Weather & Daylight
Across Texas, a typical August day averages a high near 95°F and a low near 71°F, with about 2.5 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Just as scorching as July, mid-90s afternoons and warm 71-degree nights keep the heavy, humid intensity fully in place.
| Average high | 95°F |
|---|---|
| Average low | 71°F |
| Precipitation | 2.5 in |
| Sunrise (mid-month) | 6:57 CT |
| Sunset (mid-month) | 20:15 CT |
Figures are statewide averages over the 1991–2020 U.S. climate normals; local conditions vary with elevation and distance from the coast. Sunrise and sunset are computed for a midstate point on the 15th (CT).
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Same month elsewhere: August in Utah · August in Vermont · August in Virginia