Castledawson Weather Forecast

    • 13
    • 19

    Light rain

    • 11
    • 19

    Cloudy

    • 12
    • 19

    Cloudy

    • 11
    • 19

    Partly cloudy

    • 11
    • 19

    Partly cloudy

    • 12
    • 19

    Sunny day

Today 21 May Northern Ireland

Dry and cloudy in the morning. Rain will spread northeast across all parts for a time during the afternoon, drier by evening. Warm. Maximum temperature 19 °C.

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Castledawson Temperature Statistics

May Temperature

Lough Fea Samos (17km)

  • Lowest 10 May, 2026

    1.9 °C

  • Average May

    9.8 °C

  • Highest 1 May, 2026

    17.5 °C

Climate (2021–Present)

Lough Fea Samos (17km)

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  • Average Low 2021–2026

    6.5 °C

  • Average 2021–2026

    9.3 °C

  • Average High 2021–2026

    12.2 °C
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