Jämsä monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Jämsä

Jämsä average temperature chart (Celsius) Jämsä average temperature chart (Fahrenheit)
Average monthly temperatures in Jämsä (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -6.5 -5.6 -0.2 5.7 14.3 19.3 20.8 18.4 12.3 6.4 0.5 -3.7
°F 20.4 21.9 31.6 42.3 57.7 66.7 69.4 65.1 54.1 43.6 33 25.3

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Jämsä monthly rainfall chart (mm) Jämsä monthly rainfall chart (inches)
Average monthly rainfall in Jämsä (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 38 27 32 34 39 55 77 87 65 55 53 44
inches 1.5 1 1.2 1.3 1.5 2.2 3 3.4 2.5 2.2 2.1 1.7
Rainy days 21 17 16 14 12 12 15 17 17 18 21 22

Average annual rainfall in Jämsä: 692.267mm (272.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Jämsä

Jämsä average daily sunshine chart
Average daily sunshine Jämsä
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 0.8 2.1 3.9 6 9.2 5.3 4.3 7 4.3 2.5 1 0.6

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Jämsä average minimum / maximum temperatures (Celsius) Jämsä average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Jämsä (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -13.1 -13 -8.4 -2.7 3.3 8.7 11 9.8 5.4 1.3 -4.1 -9.9
Max °C -6.3 -5.5 0 5.9 14.6 19.6 21 18.6 12.5 6.6 0.7 -3.6
Min °F 8.4 8.7 16.9 27.1 37.9 47.6 51.8 49.6 41.6 34.3 24.7 14.3
Max °F 14.5 15.4 24.4 34.9 48 57.4 60.8 57.6 48 39 28.9 19.9

Sea temperature

The graph below shows the average sea temperature.

Jämsä average sea temperature chart (Celsius) Jämsä average sea temperature chart (Fahrenheit)
Average sea temperature around Jämsä in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.5 0.5 0.4 1.8 5.2 10.2 15.5 16.7 14 10 6.4 3.3
°F 34.7 32.8 32.7 35.3 41.3 50.3 59.9 62.1 57.2 49.9 43.5 37.9

Wind speed

The graph below shows the average wind speed.

Jämsä average winspeed by month (km/h) Jämsä average winspeed by month (mph)
Average wind speed in Jämsä (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 10 11 12 12 12 10 10 11 12 12 11
mph 7 6 7 7 7 7 6 6 7 7 7 7

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Jämsä relative humidity averages
Average relative humidity in Jämsä
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
88% 87% 81% 73% 65% 65% 72% 79% 85% 87% 90% 90%

Other monthly averages

UV index Best time to go?

Jämsä weather stats

Jämsä weather statistics
Hottest month: July 20.8°C 69.4°F
Driest month: February 27mm 1.1ins
Sunniest month: June 5.3hrs
Coldest month: January -6.5°C 20.3°F
Wettest month: August 87mm 3.4ins
Warmest sea: August 16.7°C 62.1°F
Map showing location of Jämsä (61.8642, 25.19002) Jämsä map pin © Google

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