Antrim Weather Forecast

    • 13
    • 18

    Light rain

    • 12
    • 19

    Cloudy

    • 12
    • 18

    Cloudy

    • 12
    • 19

    Partly cloudy

    • 11
    • 20

    Sunny day

    • 11
    • 18

    Sunny day

    • 13
    • 20

    Sunny day

Today 21 May Northern Ireland

Overnight rain soon clearing. Then mostly dry and cloudy during the morning. Rain will spread northeast across all parts for a time during the afternoon. Warm. Maximum temperature 20 °C.

Tonight 21 May Northern Ireland

Cloud and rain soon clearing north, then dry with a few clear spells in the evening. Cloud spreads east overnight. Minimum temperature 11 °C.

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Antrim Temperature Statistics

May Temperature

Aldergrove (5km)

  • Lowest 10 May, 2026

    1.9 °C

  • Average May

    9.8 °C

  • Highest 1 May, 2026

    17.5 °C

Climate (2021–Present)

Aldergrove (5km)

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  • Average Low 2021–2026

    7.5 °C

  • Average 2021–2026

    10.4 °C

  • Average High 2021–2026

    13.4 °C
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