July in Petrozavodsk averages a daily high of 21.9°C with nights around 13°C. Expect roughly 14.7 wet days totalling 86.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Petrozavodsk is June–August.
Based on PETROZAWODSK, RS (5.5km), 1995–2024. 23 years of July data.