Best year time to visit Sejny

General weather information about Sejny

Average annual temperature is 9.2 °C

Absolute maximum temperature: 32.9 °C

Absolute minimum temperature: -9.3 °C

Number of sunny days: 141 days

Number of rainy days: 197 days

Number of snow days: 27 days

Look at detailed online map of Sejny

* Weather data for Sejny Poland is based on climate observations for 2026 year

Sejny air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.76.716.120.125.627.032.832.927.222.811.67.1
Average daytime temperature (°C)2.62.36.912.418.022.523.125.422.711.94.11.8
Average temperature (°C)1.00.02.87.912.817.718.620.417.38.82.10.4
Average night temperature (°C)-1.0-2.5-1.03.36.512.113.415.912.25.7-0.4-1.3
Absolute minimum temperature (°C)-9.3-6.7-6.2-4.8-0.24.710.310.88.80.5-7.7-6.6

Sejny monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.015.016.017.017.015.013.011.09.07.0
Daylight mean duration (h)8.09.811.914.116.017.116.514.812.710.58.67.5
Daylight minimum duration (h)7.08.010.013.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)1.13.56.98.412.011.712.510.610.24.83.01.1
Precipitation (mm)7038525129843111915983964
Sunny days61481024131110224136
Rainy days1410191971720218271619
Snow days1144100000016

Sejny - weather forecast by months

Sejny weather in januarySejny weather in februarySejny weather in marchSejny weather in aprilSejny weather in maySejny weather in juneSejny weather in julySejny weather in augustSejny weather in septemberSejny weather in octoberSejny weather in novemberSejny weather in december

Best time to visit Sejny:

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

  • May — 12.0(h)
  • June — 11.7(h)
  • July — 12.5(h)
  • August — 10.6(h)
  • September — 10.2(h)

Months with the longest average daylight duration in Sejny:

  • May — 16.0(h)
  • June — 17.1(h)
  • July — 16.5(h)

The largest precipitation sum in Sejny is at

  • June — 84(mm)
  • August — 119(mm)
  • October — 98(mm)

    • Weather forecast in the closest to Sejny admin centers

    Weather forecast in the closest towns to Sejny

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    Frequently asked questions

    When is the best time to visit Sejny?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Sejny.
    What is the weather like in Sejny?
    See average temperature, rainfall and daylight hours for Sejny by month in the table above.
    How many sunny days does Sejny have?
    The monthly weather statistics above show sunshine and rainfall patterns for Sejny throughout the year.