Best year time to visit Grendon Underwood

General weather information about Grendon Underwood

Average annual temperature is 10.9 °C

Absolute maximum temperature: 29.7 °C

Absolute minimum temperature: -5.2 °C

Number of sunny days: 125 days

Number of rainy days: 239 days

Number of snow days: 1 day

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

Grendon Underwood air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.413.814.416.620.628.526.125.829.722.014.212.4
Average daytime temperature (°C)7.49.29.512.216.522.519.720.421.615.79.78.9
Average temperature (°C)4.45.66.78.212.317.316.216.317.012.26.96.9
Average night temperature (°C)1.32.13.63.97.911.812.312.012.69.24.24.4
Absolute minimum temperature (°C)-5.2-3.2-4.0-1.24.76.67.58.67.42.2-3.0-4.2

Grendon Underwood 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)8.49.911.913.915.716.616.214.612.710.78.87.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)4.35.04.47.610.112.09.810.07.85.94.52.1
Precipitation (mm)5541035638419866669674118
Sunny days151638171647111099
Rainy days161228221414272419212121
Snow days000000000001

Grendon Underwood - weather forecast by months

Grendon Underwood weather in januaryGrendon Underwood weather in februaryGrendon Underwood weather in marchGrendon Underwood weather in aprilGrendon Underwood weather in mayGrendon Underwood weather in juneGrendon Underwood weather in julyGrendon Underwood weather in augustGrendon Underwood weather in septemberGrendon Underwood weather in octoberGrendon Underwood weather in novemberGrendon Underwood weather in december

Best time to visit Grendon Underwood:

The best time to visit Grendon Underwood during the most sunny months:

  • May — 10.1(h)
  • June — 12.0(h)
  • July — 9.8(h)
  • August — 10.0(h)

Months with the longest average daylight duration in Grendon Underwood:

  • May — 15.7(h)
  • June — 16.6(h)
  • July — 16.2(h)

The largest precipitation sum in Grendon Underwood is at

  • March — 103(mm)
  • July — 98(mm)
  • October — 96(mm)
  • December — 118(mm)

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    Frequently asked questions

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