Best year time to visit Grand Lys

General weather information about Grand Lys

Average annual temperature is 9.5 °C

Absolute maximum temperature: 28.6 °C

Absolute minimum temperature: -10.0 °C

Number of sunny days: 98 days

Number of rainy days: 259 days

Number of snow days: 8 days

Look at detailed online map of Grand Lys

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

Grand Lys air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.612.112.816.120.826.828.626.626.922.912.58.5
Average daytime temperature (°C)3.76.07.29.715.222.119.919.320.814.46.65.1
Average temperature (°C)1.83.14.36.111.317.916.315.916.811.54.83.6
Average night temperature (°C)-0.50.91.42.77.013.312.412.412.88.73.12.1
Absolute minimum temperature (°C)-10.0-5.5-4.9-3.52.07.48.88.67.6-0.2-4.5-5.9

Grand Lys 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)8.610.111.913.815.516.416.014.512.610.79.08.1
Daylight minimum duration (h)8.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)2.64.85.07.410.312.910.59.09.46.02.32.1
Precipitation (mm)17356188125739213616073106173170
Sunny days71448101645141015
Rainy days201425222114272616212825
Snow days402000000011

Grand Lys - weather forecast by months

Grand Lys weather in januaryGrand Lys weather in februaryGrand Lys weather in marchGrand Lys weather in aprilGrand Lys weather in mayGrand Lys weather in juneGrand Lys weather in julyGrand Lys weather in augustGrand Lys weather in septemberGrand Lys weather in octoberGrand Lys weather in novemberGrand Lys weather in december

Best time to visit Grand Lys:

The best time to visit Grand Lys during the most sunny months:

  • May — 10.3(h)
  • June — 12.9(h)
  • July — 10.5(h)
  • August — 9.0(h)
  • September — 9.4(h)

Months with the longest average daylight duration in Grand Lys:

  • May — 15.5(h)
  • June — 16.4(h)
  • July — 16.0(h)

The largest precipitation sum in Grand Lys is at

  • January — 173(mm)
  • March — 188(mm)
  • August — 160(mm)
  • November — 173(mm)
  • December — 170(mm)

    • Weather forecast in the closest to Grand Lys admin centers

    Weather forecast in the closest towns to Grand Lys

    Explore Grand Lys

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    Frequently asked questions

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