Best year time to visit Portmeirion

General weather information about Portmeirion

Average annual temperature is 11.2 °C

Absolute maximum temperature: 27.4 °C

Absolute minimum temperature: -4.1 °C

Number of sunny days: 77 days

Number of rainy days: 286 days

Number of snow days: 2 days

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

Portmeirion air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)11.513.813.816.721.727.223.023.627.418.613.212.2
Average daytime temperature (°C)8.09.09.012.317.021.517.318.119.314.59.99.2
Average temperature (°C)6.16.86.89.013.117.515.215.716.512.28.17.6
Average night temperature (°C)4.04.44.35.69.013.113.013.313.89.95.95.7
Absolute minimum temperature (°C)-3.1-0.6-4.10.66.08.79.811.18.63.6-1.1-2.8

Portmeirion monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.014.016.016.016.015.013.011.09.07.0
Daylight mean duration (h)8.29.911.914.015.816.816.314.712.710.68.77.7
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)3.54.24.38.211.411.69.48.97.05.53.92.0
Precipitation (mm)2975133611552108357199224252254348
Sunny days5103101513027651
Rainy days251827201617312923252530
Snow days101000000000

Portmeirion - weather forecast by months

Portmeirion weather in januaryPortmeirion weather in februaryPortmeirion weather in marchPortmeirion weather in aprilPortmeirion weather in mayPortmeirion weather in junePortmeirion weather in julyPortmeirion weather in augustPortmeirion weather in septemberPortmeirion weather in octoberPortmeirion weather in novemberPortmeirion weather in december

Best time to visit Portmeirion:

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

  • May — 11.4(h)
  • June — 11.6(h)
  • July — 9.4(h)
  • August — 8.9(h)

Months with the longest average daylight duration in Portmeirion:

  • May — 15.8(h)
  • June — 16.8(h)
  • July — 16.3(h)

The largest precipitation sum in Portmeirion is at

  • January — 297(mm)
  • March — 336(mm)
  • July — 357(mm)
  • December — 348(mm)

    • Weather forecast in the closest to Portmeirion admin centers

    Weather forecast in the closest towns to Portmeirion

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    Frequently asked questions

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