Best year time to visit Porthmadog

General weather information about Porthmadog

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 Porthmadog United Kingdom is based on climate observations for 2026 year

Porthmadog 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

Porthmadog 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

Porthmadog - weather forecast by months

Porthmadog weather in januaryPorthmadog weather in februaryPorthmadog weather in marchPorthmadog weather in aprilPorthmadog weather in mayPorthmadog weather in junePorthmadog weather in julyPorthmadog weather in augustPorthmadog weather in septemberPorthmadog weather in octoberPorthmadog weather in novemberPorthmadog weather in december

Best time to visit Porthmadog:

The best time to visit Porthmadog 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 Porthmadog:

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

The largest precipitation sum in Porthmadog is at

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

    • Weather forecast in the closest to Porthmadog admin centers

    Weather forecast in the closest towns to Porthmadog

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    Frequently asked questions

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