Best year time to visit Heidelberg

General weather information about Heidelberg

Average annual temperature is 9.0 °C

Absolute maximum temperature: 35.3 °C

Absolute minimum temperature: -27.5 °C

Number of sunny days: 192 days

Number of rainy days: 137 days

Number of snow days: 36 days

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* Weather data for Heidelberg United States is based on climate observations for 2026 year

Heidelberg air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.94.19.226.630.932.033.035.335.029.318.311.2
Average daytime temperature (°C)-3.8-1.72.511.922.628.427.927.925.214.78.04.6
Average temperature (°C)-7.2-6.9-2.76.316.622.622.222.419.810.53.00.6
Average night temperature (°C)-10.3-11.6-6.92.111.017.217.018.015.56.9-0.8-2.3
Absolute minimum temperature (°C)-24.0-27.5-16.4-6.90.210.512.611.67.6-5.9-13.7-9.3

Heidelberg monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.310.411.913.514.815.515.214.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)4.17.06.78.011.313.112.611.59.87.36.15.1
Precipitation (mm)557265149119507965126114646
Sunny days201716122014121712132118
Rainy days5651511161914181576
Snow days6510300000327

Heidelberg - weather forecast by months

Heidelberg weather in januaryHeidelberg weather in februaryHeidelberg weather in marchHeidelberg weather in aprilHeidelberg weather in mayHeidelberg weather in juneHeidelberg weather in julyHeidelberg weather in augustHeidelberg weather in septemberHeidelberg weather in octoberHeidelberg weather in novemberHeidelberg weather in december

Best time to visit Heidelberg:

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

  • May — 11.3(h)
  • June — 13.1(h)
  • July — 12.6(h)
  • August — 11.5(h)

Months with the longest average daylight duration in Heidelberg:

  • June — 15.5(h)

The largest precipitation sum in Heidelberg is at

  • April — 149(mm)
  • May — 119(mm)
  • September — 126(mm)
  • October — 114(mm)

    • Weather forecast in the closest to Heidelberg admin centers

    Weather forecast in the closest towns to Heidelberg

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    Frequently asked questions

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