April in Trenčín averages a daily high of 17.1°C with nights around 4.4°C. Expect roughly 8.6 wet days totalling 35.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Trenčín is April–September.
Based on PIESTANY, LO (34.5km), 1995–2024. 22 years of April data.