Weather in Sienna in April

General weather information about Sienna

Average annual temperature is 9.9 °C

Absolute maximum temperature: 31.0 °C

Absolute minimum temperature: -14.0 °C

Number of sunny days: 118 days

Number of rainy days: 221 days

Number of snow days: 26 days

Look at detailed online map of Sienna

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

Sienna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.511.019.019.623.228.030.931.029.024.214.112.0
Average daytime temperature (°C)4.54.29.911.317.121.324.725.222.716.67.24.3
Average temperature (°C)2.20.54.86.912.216.719.520.117.312.14.21.1
Average night temperature (°C)-0.2-3.60.22.16.711.614.115.412.47.50.9-2.6
Absolute minimum temperature (°C)-6.6-14.0-4.9-4.01.26.111.19.08.0-0.1-10.6-13.5

Sienna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.710.111.913.815.416.215.814.412.610.89.18.2
Daylight minimum duration (h)8.09.010.012.014.016.015.013.011.09.08.08.0
Sunshine mean duration (h)2.73.87.27.09.510.711.99.99.16.73.83.4
Precipitation (mm)986957779510470110109868568
Sunny days98138156108169610
Rainy days171414201624212314222016
Snow days564200000045

Sienna - weather forecast by months

Sienna weather in januarySienna weather in februarySienna weather in marchSienna weather in aprilSienna weather in maySienna weather in juneSienna weather in julySienna weather in augustSienna weather in septemberSienna weather in octoberSienna weather in novemberSienna weather in december

Best time to visit Sienna:

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

  • May — 9.5(h)
  • June — 10.7(h)
  • July — 11.9(h)
  • August — 9.9(h)
  • September — 9.1(h)

Months with the longest average daylight duration in Sienna:

  • May — 15.4(h)
  • June — 16.2(h)
  • July — 15.8(h)

The largest precipitation sum in Sienna is at

  • August — 110(mm)
  • September — 109(mm)

    • Weather forecast in the closest to Sienna admin centers

    Weather forecast in the closest towns to Sienna

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    Frequently asked questions

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