August in Trenčín averages a daily high of 26.9°C with nights around 14.3°C. Expect roughly 10.3 wet days totalling 66.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Trenčín is April–September.
Based on PIESTANY, LO (34.5km), 1995–2024. 23 years of August data.