Atlanta · August
Run in the pre-dawn.
Average high is 86°F with a 70°F overnight low. Humidity averages 76% — the limiting factor on most runs. Expect 22 rain days — plan around the radar. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
Avg high / low
86° / 70°F
Humidity
76%
Rain days
22/mo
Wind
8 mph
What August feels like in Atlanta
Sunrise
06:60
Mid-month average
Sunset
20:22
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Atlanta in August
The kit for August in Atlanta: light, breathable, and moisture-wicking — singlet or short-sleeve only, a water-resistant cap or jacket on standby.
August vs the surrounding months
vs July
-1° avg high
0 rain days
Atlanta in July →
August
86°F avg high
22 rain days
Best: pre-dawn
vs September
+4° avg high
+8 rain days
Atlanta in September →
Frequently Asked Questions
What is the best time of day to run in Atlanta in August?+
Pre-dawn. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
What's the average temperature in Atlanta in August?+
Average high 86°F, average low 70°F.
How does August compare to surrounding months in Atlanta?+
Compared to July (avg high 87°F), August is cooler. Compared to September (avg high 82°F), August is warmer.
Does it rain often in Atlanta in August?+
Expect about 22 measurable rain days in August, on average.