Best year time to visit Jämsä

General weather information about Jämsä

Average annual temperature is 5.2 °C

Absolute maximum temperature: 28.8 °C

Absolute minimum temperature: -16.4 °C

Number of sunny days: 118 days

Number of rainy days: 172 days

Number of snow days: 75 days

Look at detailed online map of Jämsä

* Weather data for Jämsä Finland is based on climate observations for 2026 year

Jämsä air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	3.1	5.1	5.5	16.4	22.4	28.4	25.3	28.8	21.2	13.5	6.0	3.0
Average daytime temperature (°C)	-1.2	-1.1	-0.1	9.0	15.2	20.7	20.5	20.0	17.3	4.9	-0.6	-4.2
Average temperature (°C)	-2.9	-3.5	-3.5	3.3	10.2	16.0	16.8	16.8	14.1	2.7	-2.3	-6.0
Average night temperature (°C)	-4.8	-6.7	-7.3	-2.3	4.5	10.4	12.9	13.2	11.0	0.7	-4.0	-7.8
Absolute minimum temperature (°C)	-14.8	-16.4	-16.4	-10.8	-2.8	1.3	11.2	10.0	5.2	-6.0	-14.6	-13.6

Jämsä monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	7.0	10.0	13.0	16.0	18.0	19.0	19.0	17.0	14.0	11.0	8.0	5.0
Daylight mean duration (h)	6.3	8.9	11.8	14.8	17.7	19.5	18.6	15.9	12.9	10.0	7.2	5.4
Daylight minimum duration (h)	5.0	7.0	10.0	13.0	16.0	18.0	17.0	14.0	11.0	8.0	5.0	5.0
Sunshine mean duration (h)	0.6	2.6	4.8	11.2	12.2	14.3	11.6	9.5	6.1	3.8	0.2	0.2
Precipitation (mm)	71	28	82	20	48	40	119	141	85	101	74	44
Sunny days	9	13	8	22	13	15	3	6	9	10	4	6
Rainy days	8	2	8	8	17	15	28	25	21	15	16	9
Snow days	14	13	15	0	1	0	0	0	0	6	10	16

Jämsä - weather forecast by months

Jämsä weather in january Jämsä weather in february Jämsä weather in march Jämsä weather in april Jämsä weather in may Jämsä weather in june Jämsä weather in july Jämsä weather in august Jämsä weather in september Jämsä weather in october Jämsä weather in november Jämsä weather in december

Best time to visit Jämsä:

The best time to visit Jämsä during the most sunny months:

April — 11.2(h)
May — 12.2(h)
June — 14.3(h)
July — 11.6(h)
August — 9.5(h)

Months with the longest average daylight duration in Jämsä:

May — 17.7(h)
June — 19.5(h)
July — 18.6(h)
August — 15.9(h)

The largest precipitation sum in Jämsä is at

July — 119(mm)

August — 141(mm)

October — 101(mm)

Weather forecast in the closest to Jämsä admin centers