Jämsä Weather in May
Thinking of visiting Jämsä in May? Expect moderate temperatures reaching 16°C (61°F) during the day, dropping to 4°C (39°F) at night, with some rainfall likely.
Rainfall in Jämsä in May
Analyzing past climate data, one can expect approximately 12 days of rain, averaging 50 mm (2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Jämsä in May
May in Jämsä brings typical temperatures with highs around 16°C (61°F) and lows of 4°C (39°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Jämsä.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Jämsä's climate page.
Jämsä Temperature in May
Min Temperature
4°C (39°F)
Max Temperature
16°C (61°F)
Chance of Rain
38%
Precipitation
50 mm (2 in)
Rainy days
12 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jämsä typically rise from around 11°C (52°F) at the start of May to approximately 16°C (61°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°F) to 7°C (45°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Jämsä in May
Browse day-by-day weather records for Jämsä spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jämsä historical weather extremes in May
The extremes listed below come from historical weather data collected in Jämsä from 1976 through 2026.
- The warmest day in May was on May 19, 2014, with a maximum of 29°C (84°F).
- Jämsä registered its coldest May night on May 2, 1976, with temperatures dropping to -7°C (19°F).
Best Places in Finland in May
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in May →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Jämsä in May
Pack for changing conditions in Jämsä in May. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Jämsä in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Jämsä's climate page.
See the full Jämsä climate overview or explore weather in Finland.
