Best year time to visit Harrow on the Hill

General weather information about Harrow on the Hill

Average annual temperature is 11.3 °C

Absolute maximum temperature: 30.6 °C

Absolute minimum temperature: -4.9 °C

Number of sunny days: 129 days

Number of rainy days: 236 days

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* Weather data for Harrow on the Hill United Kingdom is based on climate observations for 2026 year

Harrow on the Hill air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.613.414.717.320.629.027.025.930.622.814.413.1
Average daytime temperature (°C)7.99.510.112.816.923.020.521.122.416.410.29.4
Average temperature (°C)4.95.87.28.512.517.816.916.917.812.87.37.3
Average night temperature (°C)1.52.54.14.28.112.413.012.713.59.64.64.8
Absolute minimum temperature (°C)-4.9-2.9-3.60.54.97.28.99.78.12.6-2.4-3.8

Harrow on the Hill 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)8.410.011.913.915.616.616.114.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)4.44.54.37.910.012.410.210.09.16.44.32.4
Precipitation (mm)661210682423011172591039090
Sunny days1417491517351411911
Rainy days171127211613282616202120
Snow days000000000000

Harrow on the Hill - weather forecast by months

Harrow on the Hill weather in januaryHarrow on the Hill weather in februaryHarrow on the Hill weather in marchHarrow on the Hill weather in aprilHarrow on the Hill weather in mayHarrow on the Hill weather in juneHarrow on the Hill weather in julyHarrow on the Hill weather in augustHarrow on the Hill weather in septemberHarrow on the Hill weather in octoberHarrow on the Hill weather in novemberHarrow on the Hill weather in december

Best time to visit Harrow on the Hill:

The best time to visit Harrow on the Hill during the most sunny months:

  • May — 10.0(h)
  • June — 12.4(h)
  • July — 10.2(h)
  • August — 10.0(h)
  • September — 9.1(h)

Months with the longest average daylight duration in Harrow on the Hill:

  • May — 15.6(h)
  • June — 16.6(h)
  • July — 16.1(h)

The largest precipitation sum in Harrow on the Hill is at

  • March — 106(mm)
  • July — 111(mm)
  • October — 103(mm)

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    Frequently asked questions

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