When to go · Jämsä

Jämsä in May

Good month. Outside the best window (Dec–Mar for snow; Jun–Aug for mountain‑bike festivals). Across Finland: Vappu, fast-returning light and blossom; Lapland in its muddy thaw.

Key facts

Verdict: Good
Temperature: 14°C (57°F)57°F (14°C) / 4°C (39°F)39°F (4°C); average high / low
Rain days: 8
Crowds: Low; Finland overall
Prices: Medium; Finland overall

Plan around it

Verdict

GoodFinland month rating

Outside the best window (Dec–Mar for snow; Jun–Aug for mountain‑bike festivals). Across Finland: Vappu, fast-returning light and blossom; Lapland in its muddy thaw.

Is another month better than May?

May is rated good. These months rate higher:

Weather in May

Long-term averages

JämsäHighs around 14 °C (57 °F), lows around 4 °C (39 °F), rain on about 8 daysHighs around 57 °F (14 °C), lows around 39 °F (4 °C), rain on about 8 days

Crowds and prices

Crowds · Finland overall: Low
Prices · Finland overall: Medium

Finland overall: Vappu, fast-returning light and blossom; Lapland in its muddy thaw.

Compare two months

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

First month

Second month

Verdict
May: Good
Jan: Great (better)
Daytime high
May: 14 °C (57 °F)57 °F (14 °C)
Jan: -5 °C (23 °F)23 °F (-5 °C)
Night low
May: 4 °C (39 °F)39 °F (4 °C)
Jan: -12 °C (10 °F)10 °F (-12 °C)
Rain days
May: 8
Jan: 5 (better)
Crowds
May: Low
Jan: Medium
Prices
May: Medium
Jan: Medium
Festivals listed
May: 0
Jan: 0

May: Outside the best window (Dec–Mar for snow; Jun–Aug for mountain‑bike festivals). Across Finland: Vappu, fast-returning light and blossom; Lapland in its muddy thaw.

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 coat, hat and gloves for mornings and evenings

Build the full packing list for your trip →

Across Finland in May →