Castledawson Weather Forecast

    • 13
    • 18

    Light rain

    • 11
    • 18

    Cloudy

    • 14
    • 17

    Cloudy

    • 13
    • 20

    Light rain

    • 12
    • 17

    Cloudy

    • 11
    • 16

    Light rain shower

    • 10
    • 16

    Partly cloudy

Today 3 Sep Northern Ireland

Mainly dry and bright in the morning. Cloud increasing with rain spreading east during the afternoon, the rain turning heavy at times. Becoming drier again later in the evening. Maximum temperature 19 °C.

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Castledawson Temperature Statistics

September Temperature

Lough Fea Samos (17km)

  • Lowest 1 September, 2026

    13.6 °C

  • Average September

    14.9 °C

  • Highest 1 September, 2026

    17.1 °C

Climate (2021–2026)

Lough Fea Samos (17km)

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  • Average Low 2021–2026

    6.6 °C

  • Average 2021–2026

    9.4 °C

  • Average High 2021–2026

    12.3 °C
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