March in Athens averages a daily high of 16.4°C with nights around 8.6°C. Expect roughly 5.8 wet days totalling 38.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Athens is April–May.
Based on HELLINIKON, GR (9.5km), 1995–2024. 20 years of March data.