Weather in Harrow in August

General weather information about Harrow

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

Look at detailed online map of Harrow

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

Harrow 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 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 - weather forecast by months

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

Best time to visit Harrow:

The best time to visit Harrow 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:

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

The largest precipitation sum in Harrow is at

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

    • Weather forecast in the closest to Harrow admin centers

    Weather forecast in the closest towns to Harrow

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    Frequently asked questions

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