August in Athens averages a daily high of 32.3°C with nights around 20.8°C. Expect roughly 9.7 wet days totalling 112.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Athens is March–May.
Based on ATHENS BEN EPPS AIRPORT, GA US (4.9km), 1995–2024. 30 years of August data.