Best year time to visit Glassan

General weather information about Glassan

Average annual temperature is 10.9 °C

Absolute maximum temperature: 26.0 °C

Absolute minimum temperature: -2.5 °C

Number of sunny days: 77 days

Number of rainy days: 286 days

Number of snow days: 2 days

Look at detailed online map of Glassan

* Weather data for Glassan Ireland is based on climate observations for 2026 year

Glassan air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.214.315.118.721.825.421.623.526.021.513.312.5
Average daytime temperature (°C)8.09.89.812.916.821.117.518.618.414.29.88.9
Average temperature (°C)5.87.67.09.313.017.014.715.514.911.37.57.2
Average night temperature (°C)3.74.94.56.09.012.912.112.611.78.85.15.1
Absolute minimum temperature (°C)-2.5-0.9-1.41.36.18.39.29.75.52.7-1.5-2.2

Glassan monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.014.016.017.016.015.013.011.09.07.0
Daylight mean duration (h)8.19.811.914.015.916.916.414.812.710.68.67.6
Daylight minimum duration (h)7.08.010.013.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)3.53.14.57.49.411.28.68.77.04.54.62.0
Precipitation (mm)9630169975210419615314814285107
Sunny days81126169124495
Rainy days221728241521302926272126
Snow days101000000000

Glassan - weather forecast by months

Glassan weather in januaryGlassan weather in februaryGlassan weather in marchGlassan weather in aprilGlassan weather in mayGlassan weather in juneGlassan weather in julyGlassan weather in augustGlassan weather in septemberGlassan weather in octoberGlassan weather in novemberGlassan weather in december

Best time to visit Glassan:

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

  • May — 9.4(h)
  • June — 11.2(h)
  • July — 8.6(h)
  • August — 8.7(h)

Months with the longest average daylight duration in Glassan:

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

The largest precipitation sum in Glassan is at

  • March — 169(mm)
  • July — 196(mm)
  • August — 153(mm)
  • September — 148(mm)

    • Weather forecast in the closest to Glassan admin centers

    Weather forecast in the closest towns to Glassan

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    Frequently asked questions

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