Perniö

What is the climate like in Perniö?

The best time to visit Perniö is typically May – July, with trip comfort peaking in June (7.0/10). Perniö is warmest in July, when daily highs average 71°F (21°C), and coolest in January, when lows fall to about 22°F (-6°C). The wettest month is typically August and the driest is March; the year sees roughly 30 in (757 mm) of precipitation.

• Best time to visitMay – July — comfort peaks in June (7.0/10)
• Warmest monthJuly — average high 71°F (21°C)
• Coolest monthJanuary — average low 22°F (-6°C)
• Wettest monthAugust (4.0 in (100 mm))
• Driest monthMarch (1.6 in (41 mm))
• Annual precipitation30 in (757 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSalo Karkka, 19 km away (1959-2026)