Best year time to visit Harmondsworth

General weather information about Harmondsworth

Average annual temperature is 11.5 °C

Absolute maximum temperature: 31.1 °C

Absolute minimum temperature: -4.4 °C

Number of sunny days: 136 days

Number of rainy days: 229 days

Look at detailed online map of Harmondsworth

* Weather data for Harmondsworth United Kingdom is based on climate observations for 2026 year

Harmondsworth air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.813.315.017.420.828.926.925.131.123.014.713.4
Average daytime temperature (°C)8.09.610.313.017.123.220.821.222.716.710.59.7
Average temperature (°C)5.06.07.48.712.717.917.117.118.013.07.67.6
Average night temperature (°C)1.82.74.44.48.212.613.212.913.59.84.85.0
Absolute minimum temperature (°C)-4.4-2.9-3.4-0.45.17.59.010.08.32.1-2.0-3.7

Harmondsworth 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)8.410.011.913.915.616.516.114.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)4.34.54.57.610.012.310.29.99.06.54.42.4
Precipitation (mm)61121017831389376641108795
Sunny days162041013164713111111
Rainy days15827201814272417201920
Snow days000000000000

Harmondsworth - weather forecast by months

Harmondsworth weather in januaryHarmondsworth weather in februaryHarmondsworth weather in marchHarmondsworth weather in aprilHarmondsworth weather in mayHarmondsworth weather in juneHarmondsworth weather in julyHarmondsworth weather in augustHarmondsworth weather in septemberHarmondsworth weather in octoberHarmondsworth weather in novemberHarmondsworth weather in december

Best time to visit Harmondsworth:

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

  • May — 10.0(h)
  • June — 12.3(h)
  • July — 10.2(h)
  • August — 9.9(h)

Months with the longest average daylight duration in Harmondsworth:

  • May — 15.6(h)
  • June — 16.5(h)
  • July — 16.1(h)

The largest precipitation sum in Harmondsworth is at

  • March — 101(mm)
  • July — 93(mm)
  • October — 110(mm)
  • December — 95(mm)

    • Weather forecast in the closest to Harmondsworth admin centers

    Weather forecast in the closest towns to Harmondsworth

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    Frequently asked questions

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