Castledawson Weather Forecast

    • 11
    • 16

    Cloudy

    • 11
    • 18

    Cloudy

    • 11
    • 18

    Cloudy

    • 9
    • 17

    Cloudy

    • 8
    • 14

    Cloudy

    • 6
    • 13

    Partly cloudy

    • 7
    • 14

    Cloudy

Today 16 Sep Northern Ireland

Cloudy with bright spells and frequent showers in the north at first. Sunny spells soon increase as showers become isolated before dying towards the evening. Maximum Temperature 17C.

Tonight 16 Sep Northern Ireland

Dry with clear periods in the evening. Cloud spreads north by late evening with outbreaks of rain, some heavy, soon following. The rain clears in the south towards morning Minimum Temperature 9C.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Castledawson Temperature Statistics

September Temperature

Lough Fea Samos (17km)

  • Lowest 13 September, 2025

    6.3 °C

  • Average September

    11.8 °C

  • Highest 7 September, 2025

    16.4 °C

Climate (2020–Present)

Lough Fea Samos (17km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    6.3 °C

  • Average 2020–2025

    9.1 °C

  • Average High 2020–2025

    12 °C
Get WillyWeather+ to remove ads