Austin does not get a polite, two-month mosquito season. Warm nights, flash rain, and irrigated lawns keep water in the yard long after you think the drought won. If you live in Travis, Williamson, or Hays County, the useful question is not "are mosquitoes out yet." It is "where is the water sitting right now."
This is written for Austin yards first. Typical ranges, not a promise about your block. Request a free yard assessment if you want a human to walk it with you.
When Austin mosquitoes actually show up
Central Texas winters are short. Once overnight lows stop holding in the 40s, overwintering eggs and remaining adults start the cycle again. After a spring rain, gutters, plant saucers, and the low corner of a limestone patio refill in a day. The EPA mosquito life cycle is the same here as anywhere: egg to adult can take up to about two weeks, faster in heat.
Peak biting in Austin is usually late spring through early fall, with a second punch after late-summer storms. City of Austin and Travis County public-health notices track West Nile and other mosquito-borne risk in summer. We do not invent infection numbers. Check the City of Austin mosquito page for current local guidance.
Why Hill Country yards keep breeding
- Limestone and clay do not drain the same way as deep topsoil. A "dry" yard still holds water in birdbaths, corrugated downspouts, and the tray under an AC condenser.
- Irrigation is a second rainy season. A mis-aimed rotor that hits the fence line every Tuesday is a nursery.
- Live oaks and dense hedges give adults a daytime rest. Treatment that only fogs the lawn and skips the shaded perimeter does not last.
What we do on an Austin visit
Source sweep first: standing water, then a treated perimeter where adults rest. Re-treat on a 10 to 14 day cycle so the next hatch does not replace the last one. If they come back between visits, we come back. That is the whole product.
We are based in Austin. First treatments are for yards we can actually reach this week. Get the assessment on the calendar.
What to skip
Zappers, ultrasonic plugs, and a citronella candle on the patio table do not replace dumping water and treating rest sites. University extension literature has been blunt on this for years. Save the candle for ambiance. Do the work that changes the count.