Best year time to visit Altena

General weather information about Altena

Average annual temperature is 11.1 °C

Absolute maximum temperature: 30.4 °C

Absolute minimum temperature: -4.8 °C

Number of sunny days: 97 days

Number of rainy days: 266 days

Number of snow days: 2 days

Look at detailed online map of Altena

* Weather data for Altena Netherlands is based on climate observations for 2026 year

Altena air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.212.615.718.921.129.930.426.428.821.313.511.6
Average daytime temperature (°C)7.28.49.312.116.422.821.421.022.015.19.47.6
Average temperature (°C)5.25.46.28.012.318.017.717.117.512.67.15.7
Average night temperature (°C)3.12.73.33.88.412.914.213.413.310.14.73.9
Absolute minimum temperature (°C)-3.2-3.5-4.3-2.53.97.910.910.49.14.1-4.1-4.8

Altena monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.014.016.016.016.015.013.011.09.07.0
Daylight mean duration (h)8.29.911.914.015.916.916.414.712.710.68.77.6
Daylight minimum duration (h)7.08.010.012.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)3.44.65.39.010.312.711.410.29.24.43.81.9
Precipitation (mm)1144010570602213212055163134134
Sunny days61161112162617127
Rainy days251725191914292513302822
Snow days000000000002

Altena - weather forecast by months

Altena weather in januaryAltena weather in februaryAltena weather in marchAltena weather in aprilAltena weather in mayAltena weather in juneAltena weather in julyAltena weather in augustAltena weather in septemberAltena weather in octoberAltena weather in novemberAltena weather in december

Best time to visit Altena:

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

  • May — 10.3(h)
  • June — 12.7(h)
  • July — 11.4(h)
  • August — 10.2(h)
  • September — 9.2(h)

Months with the longest average daylight duration in Altena:

  • May — 15.9(h)
  • June — 16.9(h)
  • July — 16.4(h)

The largest precipitation sum in Altena is at

  • July — 132(mm)
  • October — 163(mm)
  • November — 134(mm)
  • December — 134(mm)

    • Weather forecast in the closest to Altena admin centers

    Weather forecast in the closest towns to Altena

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    Frequently asked questions

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