July in Helsinki averages a daily high of 22°C with nights around 14.7°C. Expect roughly 11.1 wet days totalling 58.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Helsinki is June–August.
Based on HELSINKI KAISANIEMI AWS, FI (0.9km), 1995–2024. 30 years of July data.