June in Basel averages a daily high of 24.3°C with nights around 13.4°C. Expect roughly 12.5 wet days totalling 85.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Basel is June–September.
Based on BASEL BINNINGEN, SZ (2.9km), 1995–2024. 30 years of June data.