May in Saarbrücken averages a daily high of 20.5°C with nights around 8.6°C. Expect roughly 12.8 wet days totalling 77.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Saarbrücken is May–September.
Based on SAARBRUCKEN BURBACH, GM (5.5km), 1995–2024. 24 years of May data.