Castlerock Weather Forecast

    • 11
    • 16

    Cloudy

    • 14
    • 18

    Overcast

    • 13
    • 20

    Overcast

    • 14
    • 22

    Overcast

    • 14
    • 24

    Sunny day

    • 15
    • 25

    Sunny day

Today 7 Jul Northern Ireland

Mainly dry with bright or sunny periods at first then becoming rather cloudy. A few light afternoon showers possible, these mostly towards the North Coast. Maximum Temperature 19C.

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Castlerock Temperature Statistics

July Temperature

Magilligan No 2 (10km)

  • Lowest 2 July, 2025

    6.7 °C

  • Average July

    13.7 °C

  • Highest 3 July, 2025

    16.8 °C

Climate (2020–Present)

Magilligan No 2 (10km)

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  • Average Low 2020–2025

    7.4 °C

  • Average 2020–2025

    10.4 °C

  • Average High 2020–2025

    13.2 °C
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