Best year time to visit Harleston

General weather information about Harleston

Average annual temperature is 11.3 °C

Absolute maximum temperature: 30.0 °C

Absolute minimum temperature: -4.3 °C

Number of sunny days: 127 days

Number of rainy days: 237 days

Number of snow days: 1 day

Look at detailed online map of Harleston

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

Harleston air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.214.815.215.619.328.226.825.930.023.314.513.7
Average daytime temperature (°C)8.19.69.912.115.921.920.921.422.416.610.19.4
Average temperature (°C)5.06.17.08.311.817.317.217.217.913.07.37.1
Average night temperature (°C)1.93.03.94.57.812.313.413.113.89.94.74.4
Absolute minimum temperature (°C)-4.3-2.3-3.00.63.98.29.48.69.12.2-2.3-3.2

Harleston 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)8.39.911.913.915.716.716.214.612.710.68.87.8
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)4.04.94.49.210.712.210.510.78.85.54.22.6
Precipitation (mm)4271047752489465691156781
Sunny days1220291218481311108
Rainy days18829211912272317202023
Snow days100000000000

Harleston - weather forecast by months

Harleston weather in januaryHarleston weather in februaryHarleston weather in marchHarleston weather in aprilHarleston weather in mayHarleston weather in juneHarleston weather in julyHarleston weather in augustHarleston weather in septemberHarleston weather in octoberHarleston weather in novemberHarleston weather in december

Best time to visit Harleston:

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

  • April — 9.2(h)
  • May — 10.7(h)
  • June — 12.2(h)
  • July — 10.5(h)
  • August — 10.7(h)

Months with the longest average daylight duration in Harleston:

  • May — 15.7(h)
  • June — 16.7(h)
  • July — 16.2(h)

The largest precipitation sum in Harleston is at

  • March — 104(mm)
  • July — 94(mm)
  • October — 115(mm)

    • Weather forecast in the closest to Harleston admin centers

    Weather forecast in the closest towns to Harleston

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    Frequently asked questions

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