Castlerock Weather Forecast

    • 14
    • 18

    Overcast

    • 14
    • 20

    Cloudy

    • 13
    • 22

    Cloudy

    • 14
    • 24

    Sunny day

    • 15
    • 26

    Sunny day

    • 16
    • 25

    Sunny day

Today 8 Jul Northern Ireland

Some bright or sunny spells in the east at first, but cloud over western counties will extend to all areas through the morning, perhaps bringing the odd patch of light rain. Western areas may begin to brighten again towards evening. Maximum Temperature 21C.

Tonight 8 Jul Northern Ireland

Largely cloudy to start with some patchy light rain. Clearer breaks developing at times through the evening, but clouding over again from the west through the early hours. Minimum Temperature 11C.

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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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