Best year time to visit Trefriw

General weather information about Trefriw

Average annual temperature is 9.5 °C

Absolute maximum temperature: 26.1 °C

Absolute minimum temperature: -9.0 °C

Number of sunny days: 63 days

Number of rainy days: 297 days

Number of snow days: 5 days

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

Trefriw air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.411.811.615.717.726.122.323.426.120.212.411.3
Average daytime temperature (°C)6.27.57.210.514.419.716.316.718.113.28.17.6
Average temperature (°C)4.15.34.97.210.915.613.714.015.010.56.35.9
Average night temperature (°C)1.83.02.23.77.110.911.211.512.28.04.04.1
Absolute minimum temperature (°C)-7.5-1.4-9.0-1.44.95.67.88.56.62.9-2.9-3.8

Trefriw 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)8.29.811.914.015.916.916.414.712.710.68.77.6
Daylight minimum duration (h)7.08.010.013.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)3.74.04.18.211.311.89.38.76.95.63.31.6
Precipitation (mm)18240255773269194188156175150225
Sunny days56171512025622
Rainy days252127231618312925252829
Snow days113000000000

Trefriw - weather forecast by months

Trefriw weather in januaryTrefriw weather in februaryTrefriw weather in marchTrefriw weather in aprilTrefriw weather in mayTrefriw weather in juneTrefriw weather in julyTrefriw weather in augustTrefriw weather in septemberTrefriw weather in octoberTrefriw weather in novemberTrefriw weather in december

Best time to visit Trefriw:

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

  • May — 11.3(h)
  • June — 11.8(h)
  • July — 9.3(h)
  • August — 8.7(h)

Months with the longest average daylight duration in Trefriw:

  • May — 15.9(h)
  • June — 16.9(h)
  • July — 16.4(h)

The largest precipitation sum in Trefriw is at

  • March — 255(mm)
  • July — 194(mm)
  • August — 188(mm)
  • December — 225(mm)

    • Weather forecast in the closest to Trefriw admin centers

    Weather forecast in the closest towns to Trefriw

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    Frequently asked questions

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