April in Níkaia averages a daily high of 20.5°C with nights around 11.9°C. Expect roughly 4.3 wet days totalling 22.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Níkaia is April–May.
Based on HELLINIKON, GR (11.5km), 1995–2024. 19 years of April data.