Climate almanac
Jämsänkoski
Central Finland, Finland · 61.92°, 25.17°
What is the climate like in Jämsänkoski?
The best time to visit Jämsänkoski is typically June, the year's most comfortable month (6.7/10). Jämsänkoski is warmest in July, when daily highs average 71°F (22°C), and coolest in January, when lows fall to about 16°F (-9°C). The wettest month is typically August and the driest is March; the year sees roughly 31 in (776 mm) of precipitation.
- Best time to visitJune — the year's comfort peak (6.7/10)
- Warmest monthJuly — average high 71°F (22°C)
- Coolest monthJanuary — average low 16°F (-9°C)
- Wettest monthAugust (3.7 in (95 mm))
- Driest monthMarch (1.6 in (41 mm))
- Annual precipitation31 in (776 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromJamsa Halli Lentokentta, 21 km away (1964-2026)