Summer in Austin isn’t like summer anywhere else in the United States: between June and September, temperatures regularly climb past 100°F (38°C), and Central Texas humidity can make it feel even hotter. Preparing ahead of time is the difference between enjoying the season and just surviving it.
Table of Contents
- When the real heat actually starts
- How to prepare your home
- Hydration and safe hours
- Before vs. during a heat wave
- Useful resources
- Frequently asked questions
When the real heat actually starts
Although summer “officially” begins in June, Austin usually feels its first intense heat by mid-May, and the hardest stretch hits between July and August, when it’s common to see streaks of 30+ consecutive days above 100°F. The National Weather Service for Austin/San Antonio issues heat alerts when the heat index reaches dangerous levels.
How to prepare your home
- Get your A/C serviced before May: technicians book up fast once the heat starts.
- Seal doors and windows: escaping cold air is money lost on your electric bill.
- Inspect your garage: high heat affects motors and garage door springs more than most people realize, especially in poorly ventilated garages.
Hydration and safe hours
Avoid outdoor activity between 2pm and 6pm, when the heat index tends to peak. If you exercise outdoors, mornings before 9am are the safest window.
Before vs. during a heat wave
| Before summer (April-May) | During a heat wave (Jun-Sep) |
|---|---|
| Preventive A/C service | Check filters every 2-3 weeks |
| Seal windows and doors | Avoid oven cooking during peak hours |
| Inspect roof and insulation | Close curtains on the sun-facing side |
| Check garage door mechanism | Avoid opening the garage during peak heat |
Useful resources
The City of Austin opens free cooling centers during the most extreme heat waves, available to any resident. It’s worth knowing where they are before you need one. If you’re also considering settling in the city, check our ultimate guide to moving to Austin.
Frequently asked questions
What’s the hottest month in Austin?
August is usually the month with the highest, most consistent temperatures, closely followed by July.
Is it safe to exercise outdoors in Austin summers?
Yes, as long as it’s before 9am or after 7pm, avoiding peak heat-index hours.
How much can the electric bill rise in summer?
It commonly doubles or triples compared to winter due to constant A/C use.
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