When to go · Jämsä

Jämsä in August

Great month. Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.

Key facts

Verdict: Great
Temperature: 20°C (68°F)68°F (20°C) / 11°C (52°F)52°F (11°C); average high / low
Rain days: 9
Crowds: Medium; Finland overall
Prices: Medium; Finland overall

Plan around it

Verdict

GreatBest and avoid months for Jämsä

Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.

No other month rates higher than August for Jämsä in this guide.

Long-term averages

JämsäHighs around 20 °C (68 °F), lows around 11 °C (52 °F), rain on about 9 daysHighs around 68 °F (20 °C), lows around 52 °F (11 °C), rain on about 9 days

Finland overall: Still warm, crayfish season, Flow festival; dark evenings return late in the month.

Weather, crowds and prices for any two months in Jämsä, side by side.

First month

Second month

August: Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.

January: Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.

Jämsä: figures are long-term averages from this guide, not a forecast.