Best year time to visit Sumnyy

General weather information about Sumnyy

Average annual temperature is 4.5 °C

Absolute maximum temperature: 35.6 °C

Absolute minimum temperature: -30.0 °C

Number of sunny days: 140 days

Number of rainy days: 143 days

Number of snow days: 82 days

Look at detailed online map of Sumnyy

* Weather data for Sumnyy Russia is based on climate observations for 2026 year

Sumnyy air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.48.912.721.124.135.635.129.423.521.812.67.3
Average daytime temperature (°C)-6.3-2.04.15.914.824.325.122.616.211.83.5-5.5
Average temperature (°C)-10.1-7.7-1.20.29.618.419.717.510.96.4-0.9-9.6
Average night temperature (°C)-14.2-12.8-7.0-6.53.612.013.912.46.21.6-5.3-14.0
Absolute minimum temperature (°C)-29.5-20.0-19.0-15.5-4.96.88.27.2-1.9-5.8-16.7-30.0

Sumnyy monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.016.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.410.011.913.915.716.616.214.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)3.66.27.78.711.212.512.810.18.55.84.13.5
Precipitation (mm)46314176713995171113724639
Sunny days613191512131174161212
Rainy days326816172024251354
Snow days2213673000121315

Sumnyy - weather forecast by months

Sumnyy weather in januarySumnyy weather in februarySumnyy weather in marchSumnyy weather in aprilSumnyy weather in maySumnyy weather in juneSumnyy weather in julySumnyy weather in augustSumnyy weather in septemberSumnyy weather in octoberSumnyy weather in novemberSumnyy weather in december

Best time to visit Sumnyy:

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

  • May — 11.2(h)
  • June — 12.5(h)
  • July — 12.8(h)
  • August — 10.1(h)

Months with the longest average daylight duration in Sumnyy:

  • May — 15.7(h)
  • June — 16.6(h)
  • July — 16.2(h)

The largest precipitation sum in Sumnyy is at

  • July — 95(mm)
  • August — 171(mm)
  • September — 113(mm)

    • Weather forecast in the closest to Sumnyy admin centers

    Weather forecast in the closest towns to Sumnyy

    Explore Sumnyy

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    Frequently asked questions

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