Castledawson Weather Forecast

    • 10
    • 19

    Overcast

    • 13
    • 18

    Cloudy

    • 13
    • 20

    Light rain

    • 12
    • 16

    Light rain shower

    • 12
    • 16

    Cloudy

    • 12
    • 15

    Light rain shower

    • 12
    • 16

    Partly cloudy

Today 12 Sep Northern Ireland

Cloudy with outbreaks of heavy rain in the early morning. This will soon turn showery before becoming drier with showers mostly restricted to the west and the north in the afternoon. Maximum temperature 20 °C.

Tonight 12 Sep Northern Ireland

The evening will be mostly dry with only a chance of an odd shower. The night will then continue dry with clear spells. Minimum temperature 11 °C.

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Castledawson Temperature Statistics

September Temperature

Lough Fea Samos (17km)

  • Lowest 9 September, 2026

    10.1 °C

  • Average September

    14.8 °C

  • Highest 2 September, 2026

    20.7 °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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