May in Aalen averages a daily high of 19.1°C with nights around 6.9°C. Expect roughly 13.4 wet days totalling 83.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Aalen is May–September.
Based on ELLWANGEN RINDELBACH, GM (17.2km), 1995–2024. 30 years of May data.