July in Trenčín averages a daily high of 27.1°C with nights around 13.9°C. Expect roughly 10.7 wet days totalling 63mm. 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 July data.