Sejny monthly weather averages

Average daytime temperature

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

Sejny average temperature chart (Celsius) Sejny average temperature chart (Fahrenheit)
Average monthly temperatures in Sejny (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.8 -1.6 3.3 10.9 17.8 20.9 22 21.8 16.7 10.8 4.1 -0.4
°F 26.9 29.2 38 51.7 64.1 69.6 71.7 71.2 62.1 51.4 39.4 31.3

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.

Sejny monthly rainfall chart (mm) Sejny monthly rainfall chart (inches)
Average monthly rainfall in Sejny (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 32 24 31 35 54 71 78 69 54 46 47 41
inches 1.3 0.9 1.2 1.4 2.1 2.8 3.1 2.7 2.1 1.8 1.9 1.6
Rainy days 17 14 13 13 13 14 14 13 14 13 17 18

Average annual rainfall in Sejny: 660.2mm (259.9 inches)

Average daily sunshine

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

Sejny average daily sunshine chart
Average daily sunshine Sejny
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.4 2.5 4.3 6 8.2 9 8.6 8.1 5.6 3.4 1.4 1.1

Day / night temperatures

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

Sejny average minimum / maximum temperatures (Celsius) Sejny average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sejny (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -8.3 -7.8 -4.1 1.5 6.7 10.1 11.5 11 7.5 3.5 -0.4 -5.2
Max °C -2.7 -1.4 3.5 11.2 18.1 21.2 22.3 22.1 17 11 4.2 -0.3
Min °F 17.1 18 24.6 34.6 44.1 50.1 52.7 51.7 45.4 38.2 31.3 22.7
Max °F 22.1 23.7 31.5 43.3 54.3 60.1 62.4 61.7 54 45 35.4 27.1

Sea temperature

The graph below shows the average sea temperature.

Sejny average sea temperature chart (Celsius) Sejny average sea temperature chart (Fahrenheit)
Average sea temperature around Sejny in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.3 3.1 3.1 4.8 8.8 14.1 18.4 19.5 16.8 12.9 9.3 6.2
°F 39.7 37.5 37.6 40.7 47.9 57.3 65.1 67.1 62.3 55.2 48.7 43.2

Wind speed

The graph below shows the average wind speed.

Sejny average winspeed by month (km/h) Sejny average winspeed by month (mph)
Average wind speed in Sejny (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 15 15 14 12 11 11 10 12 13 16 16
mph 10 9 9 9 7 7 7 6 7 8 10 10

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.

Sejny relative humidity averages
Average relative humidity in Sejny
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90% 88% 83% 75% 72% 74% 76% 77% 81% 86% 90% 91%

Other monthly averages

UV index Best time to go?

Sejny weather stats

Sejny weather statistics
Hottest month: July 22°C 71.6°F
Driest month: February 24mm 0.9ins
Sunniest month: August 8.1hrs
Coldest month: January -2.8°C 27°F
Wettest month: July 78mm 3.1ins
Warmest sea: August 19.5°C 67.1°F
Map showing location of Sejny (54.10802, 23.34698) Sejny map pin © Google

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