Castledawson Weather Forecast

    • 4
    • 11

    Cloudy

    • 4
    • 14

    Cloudy

    • 3
    • 13

    Mist

    • 5
    • 12

    Cloudy

    • 6
    • 11

    Cloudy

    • 5
    • 9

    Cloudy

Today 18 Mar Northern Ireland

Some brightness in the northwest at first. Otherwise cloudy and mainly dry, just the odd light shower. Light winds throughout. Maximum temperature 13 °C.

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Castledawson Temperature Statistics

March Temperature

Lough Fea Samos (17km)

  • Lowest 6 March, 2026

    -0.8 °C

  • Average March

    7.2 °C

  • Highest 4 March, 2026

    13.3 °C

Climate (2021–2026)

Lough Fea Samos (17km)

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  • Average Low 2021–2026

    6.4 °C

  • Average 2021–2026

    9.2 °C

  • Average High 2021–2026

    12.1 °C
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