Best year time to visit Sellafield

General weather information about Sellafield

Average annual temperature is 10.7 °C

Absolute maximum temperature: 27.6 °C

Absolute minimum temperature: -2.5 °C

Number of sunny days: 74 days

Number of rainy days: 290 days

Number of snow days: 1 day

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

Sellafield air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)11.510.913.215.719.827.621.822.626.017.213.011.9
Average daytime temperature (°C)7.68.68.111.014.819.916.817.418.113.69.28.5
Average temperature (°C)5.96.96.18.312.216.915.015.515.711.97.56.9
Average night temperature (°C)4.14.93.65.29.213.213.013.513.210.15.64.9
Absolute minimum temperature (°C)-2.20.8-2.50.76.96.89.49.97.64.6-0.9-2.3

Sellafield monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.015.016.017.017.015.013.011.09.07.0
Daylight mean duration (h)8.09.711.914.116.117.116.614.912.710.58.57.4
Daylight minimum duration (h)7.08.010.013.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)3.44.45.59.211.512.510.19.67.44.14.22.0
Precipitation (mm)251802571246472308147252159194279
Sunny days47591213128481
Rainy days272125211917302922272230
Snow days001000000000

Sellafield - weather forecast by months

Sellafield weather in januarySellafield weather in februarySellafield weather in marchSellafield weather in aprilSellafield weather in maySellafield weather in juneSellafield weather in julySellafield weather in augustSellafield weather in septemberSellafield weather in octoberSellafield weather in novemberSellafield weather in december

Best time to visit Sellafield:

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

  • April — 9.2(h)
  • May — 11.5(h)
  • June — 12.5(h)
  • July — 10.1(h)
  • August — 9.6(h)

Months with the longest average daylight duration in Sellafield:

  • May — 16.1(h)
  • June — 17.1(h)
  • July — 16.6(h)

The largest precipitation sum in Sellafield is at

  • January — 251(mm)
  • March — 257(mm)
  • July — 308(mm)
  • September — 252(mm)
  • December — 279(mm)

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    Frequently asked questions

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