Castlewellan Weather Forecast

    • 8
    • 15

    Cloudy

    • 5
    • 14

    Cloudy

    • 3
    • 13

    Partly cloudy

    • 5
    • 13

    Sunny day

    • 5
    • 14

    Sunny day

    • 5
    • 15

    Cloudy

    • 6
    • 14

    Cloudy

Today 26 Apr Northern Ireland

Mostly cloudy with bright spells. Mainly dry in the morning, a few afternoon showers developing and these turning sharp in places. Maximum temperature 17 °C.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Castlewellan Temperature Statistics

April Temperature

Glenanne (36km)

  • Lowest 10 April, 2026

    -0.1 °C

  • Average April

    7.7 °C

  • Highest 24 April, 2026

    17.6 °C

Climate (2021–Present)

Glenanne (36km)

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

  • Average Low 2021–2026

    6.9 °C

  • Average 2021–2026

    9.7 °C

  • Average High 2021–2026

    12.7 °C
Get WillyWeather+ to remove ads