July in Marienthal averages a daily high of 23.2°C with nights around 13.2°C. Expect roughly 15 wet days totalling 83.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Marienthal is May–September.
Based on HAMBURG FUHLSBUETTEL, GM (9.8km), 1995–2024. 30 years of July data.