Slieve Gullion Weather Forecast

    • 11
    • 18

    Partly cloudy

    • 11
    • 17

    Sunny day

    • 11
    • 16

    Sunny day

    • 10
    • 17

    Cloudy

    • 9
    • 16

    Cloudy

    • 8
    • 15

    Cloudy

Today 15 Aug Northern Ireland

A rather cloudy start on Friday with patchy mist or fog, but sunny spells developing. Maximum Temperature 22C.

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Slieve Gullion Temperature Statistics

August Temperature

Glenanne (15km)

  • Lowest 10 August, 2025

    9.2 °C

  • Average August

    15.5 °C

  • Highest 12 August, 2025

    24.7 °C

Climate (2020–Present)

Glenanne (15km)

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  • Average Low 2020–2025

    6.8 °C

  • Average 2020–2025

    9.6 °C

  • Average High 2020–2025

    12.7 °C
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