When to go · Jämsä
Jämsä in June
Great month. Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.
Key facts
- Verdict
- Great
- Temperature
- 18°C (64°F)64°F (18°C) / 9°C (48°F)48°F (9°C)
- average high / low
- Rain days
- 9
- Crowds
- Medium
- Finland overall
- Prices
- Medium
- Finland overall
Verdict
Inside Jämsä's best window: Dec–Mar for snow; Jun–Aug for mountain‑bike festivals.
Is another month better than June?
No other month rates higher than June for Jämsä in this guide.
Weather in June
- JämsäHighs around 18 °C (64 °F), lows around 9 °C (48 °F), rain on about 9 daysHighs around 64 °F (18 °C), lows around 48 °F (9 °C), rain on about 9 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Midsummer (Juhannus) big impact
Fri–Sat between 19 and 26 Jun (25–26 Jun 2027) · Finland
Bonfires at cottages; cities empty, shops and restaurants closed on the Eve.
Crowds and prices
- Crowds · Finland overall
- Medium
- Prices · Finland overall
- Medium
Finland overall: White nights and Midsummer; lakes warming; mosquitoes in the north.
Compare two months
Weather, crowds and prices for any two months in Jämsä, side by side.
Verdict
Jun: Great
Jan: Great
Daytime high
Jun: 18 °C (64 °F)64 °F (18 °C)
Jan: -5 °C (23 °F)23 °F (-5 °C)
Night low
Jun: 9 °C (48 °F)48 °F (9 °C)
Jan: -12 °C (10 °F)10 °F (-12 °C)
Rain days
Jun: 9
Jan: 5 (better)
Crowds
Jun: Medium
Jan: Medium
Prices
Jun: Medium
Jan: Medium
Festivals listed
Jun: 1
Jan: 0
June: 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.
What to pack
- A warm layer for the evenings