Castlerock Weather Forecast

    • 6
    • 9

    Light rain

    • 4
    • 9

    Light rain shower

    • 5
    • 9

    Heavy rain shower

    • 8
    • 11

    Heavy rain

    • 9
    • 11

    Cloudy

    • 8
    • 13

    Overcast

Today 26 Mar Northern Ireland

A dry, bright start then clouding over with outbreaks of mainly light rain developing. Freshening southwesterly winds. Maximum temperature 9 °C.

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Castlerock Temperature Statistics

March Temperature

Magilligan No 2 (10km)

  • Lowest 6 March, 2026

    0.4 °C

  • Average March

    7.6 °C

  • Highest 20 March, 2026

    15.4 °C

Climate (2021–2026)

Magilligan No 2 (10km)

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  • Average Low 2021–2026

    7.6 °C

  • Average 2021–2026

    10.5 °C

  • Average High 2021–2026

    13.3 °C
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