Porvoo

What is the climate like in Porvoo?

The best time to visit Porvoo is typically May – July, with trip comfort peaking in June (7.0/10). Porvoo is warmest in July, when daily highs average 72°F (22°C), and coolest in January, when lows fall to about 20°F (-7°C). The wettest month is typically July and the driest is March; the year sees roughly 29 in (741 mm) of precipitation.

• Best time to visitMay – July — comfort peaks in June (7.0/10)
• Warmest monthJuly — average high 72°F (22°C)
• Coolest monthJanuary — average low 20°F (-7°C)
• Wettest monthJuly (3.3 in (83 mm))
• Driest monthMarch (1.6 in (42 mm))
• Annual precipitation29 in (741 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPorvoo Harabacka, 3 km away (2006-2026)