Weather in Atlanta in August

A hard month. August is a hard month in Atlanta, and worth planning around. You should expect rain on 16 days of the month, which is more days wet than dry.

August ranks 11 of 12 — near the bottom of Atlanta's year. October is the month that works, and the swing between the two is 46 points, which is a different holiday rather than a slightly better one.

Rain on 16 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 32.5 °C days and 20.7 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 7 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest August day reached 40.5 °C and the coldest night fell to 13 °C, and the wettest single day dropped 35 mm — roughly 35% of the month's rain in one day.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 162 mm against 44 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 100 mm average is a reasonable planning figure, not a promise.

Wind is light at 3.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 70%.

How August sits in the year

Temperatures hold steady either side: 32.6 °C in July, 32.5 here, 29.7 in September. Nothing about the timing within the month matters much. Rain is the thing that moves: September brings 7 days less of it, so pushing the dates later buys drier weather.

Daylight in August

13.4 hours of daylight, losing 0.9 hours across the month. That is between Atlanta's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 32.8 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Atlanta versus nearby

If Atlanta is one option among several, the nearby comparison is worth making. Huntsville is close enough to be a coin toss — within a degree on temperature, 2 days less rain. Montgomery is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: August is a compromise. October is 41 points better and is what Atlanta is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Atlanta

See all twelve months in Atlanta, or where else to go in August.