Best year time to visit On

General weather information about On

Average annual temperature is 11.5 °C

Absolute maximum temperature: 30.1 °C

Absolute minimum temperature: -5.2 °C

Number of sunny days: 113 days

Number of rainy days: 247 days

Number of snow days: 5 days

Look at detailed online map of On

* Weather data for On Belgium is based on climate observations for 2026 year

On air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.013.315.118.723.628.929.829.030.125.114.711.5
Average daytime temperature (°C)6.28.29.912.117.624.622.421.723.016.89.37.6
Average temperature (°C)4.24.96.88.113.219.818.417.718.313.27.25.9
Average night temperature (°C)2.12.13.43.98.114.113.713.413.59.65.34.1
Absolute minimum temperature (°C)-5.2-3.6-3.7-2.93.29.09.29.06.41.4-3.3-3.7

On monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.016.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.610.111.913.815.416.315.914.412.610.79.18.1
Daylight minimum duration (h)8.09.010.012.014.016.015.013.011.09.08.08.0
Sunshine mean duration (h)2.55.45.17.310.713.510.89.59.55.82.72.2
Precipitation (mm)1192117276565414012156104151113
Sunny days81557141856171125
Rainy days191326231712262513202825
Snow days400000000001

On - weather forecast by months

On weather in januaryOn weather in februaryOn weather in marchOn weather in aprilOn weather in mayOn weather in juneOn weather in julyOn weather in augustOn weather in septemberOn weather in octoberOn weather in novemberOn weather in december

Best time to visit On:

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

  • May — 10.7(h)
  • June — 13.5(h)
  • July — 10.8(h)
  • August — 9.5(h)
  • September — 9.5(h)

Months with the longest average daylight duration in On:

  • May — 15.4(h)
  • June — 16.3(h)
  • July — 15.9(h)

The largest precipitation sum in On is at

  • March — 172(mm)
  • July — 140(mm)
  • November — 151(mm)

    • Weather forecast in the closest to On admin centers

    Weather forecast in the closest towns to On

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    Frequently asked questions

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