Best year time to visit Koski

General weather information about Koski

Average annual temperature is 4.8 °C

Absolute maximum temperature: 29.7 °C

Absolute minimum temperature: -17.6 °C

Number of sunny days: 142 days

Number of rainy days: 159 days

Number of snow days: 64 days

Look at detailed online map of Koski

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

Koski air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.55.15.115.422.329.424.729.722.013.25.54.3
Average daytime temperature (°C)-0.9-0.6-0.38.914.420.320.019.616.94.9-1.1-4.0
Average temperature (°C)-2.6-2.8-4.03.09.515.615.916.213.61.9-2.9-6.2
Average night temperature (°C)-4.4-5.7-8.2-2.44.110.011.812.810.3-0.7-4.8-8.8
Absolute minimum temperature (°C)-17.6-13.7-15.7-12.3-3.72.39.99.12.1-7.0-16.3-16.3

Koski monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.016.019.019.019.017.014.011.08.05.0
Daylight mean duration (h)6.28.811.814.917.819.718.816.013.09.97.05.2
Daylight minimum duration (h)5.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)0.93.15.110.512.714.711.79.26.24.50.60.1
Precipitation (mm)593065473829117131121748932
Sunny days101610221716459131010
Rainy days10268121427262116116
Snow days1110150200002915

Best time to visit Koski:

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

  • April — 10.5(h)
  • May — 12.7(h)
  • June — 14.7(h)
  • July — 11.7(h)
  • August — 9.2(h)

Months with the longest average daylight duration in Koski:

  • May — 17.8(h)
  • June — 19.7(h)
  • July — 18.8(h)
  • August — 16.0(h)

The largest precipitation sum in Koski is at

  • July — 117(mm)
  • August — 131(mm)
  • September — 121(mm)
  • November — 89(mm)