Weather in Önsta in December

General weather information about Önsta

Average annual temperature is 4.0 °C

Absolute maximum temperature: 27.9 °C

Absolute minimum temperature: -19.9 °C

Number of sunny days: 148 days

Number of rainy days: 148 days

Number of snow days: 69 days

Look at detailed online map of Önsta

* Weather data for Önsta Sweden is based on climate observations for 2026 year

Önsta air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)6.37.66.415.223.927.925.022.823.012.73.35.9
Average daytime temperature (°C)-1.7-0.1-0.56.915.621.420.518.816.44.6-3.1-4.8
Average temperature (°C)-4.5-3.5-5.21.99.916.216.015.112.51.8-5.5-7.8
Average night temperature (°C)-7.4-7.4-10.3-3.13.49.711.511.58.7-0.8-7.7-10.8
Absolute minimum temperature (°C)-18.9-18.8-19.9-12.8-4.02.87.48.02.1-7.0-17.6-17.6

Önsta monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.016.019.020.020.017.014.011.08.05.0
Daylight mean duration (h)5.98.711.815.018.120.219.116.113.09.96.84.9
Daylight minimum duration (h)4.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)1.44.87.29.713.915.212.48.56.85.00.60.5
Precipitation (mm)6524383927369316058429725
Sunny days111517151619161316109
Rainy days8451014113025171275
Snow days129951000031317

Best time to visit Önsta:

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

  • April — 9.7(h)
  • May — 13.9(h)
  • June — 15.2(h)
  • July — 12.4(h)

Months with the longest average daylight duration in Önsta:

  • May — 18.1(h)
  • June — 20.2(h)
  • July — 19.1(h)
  • August — 16.1(h)

The largest precipitation sum in Önsta is at

  • July — 93(mm)
  • August — 160(mm)
  • November — 97(mm)