August in Lausanne averages a daily high of 25°C with nights around 13.3°C. Expect roughly 11.6 wet days totalling 88.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lausanne is June–September.
Based on PAYERNE, SZ (41.3km), 1995–2024. 30 years of August data.