The Barmouth Weather Forecast

    • 12
    • 18

    Light rain

    • 13
    • 17

    Cloudy

    • 12
    • 19

    Light rain shower

    • 14
    • 17

    Cloudy

    • 13
    • 20

    Light rain

    • 12
    • 15

    Light rain shower

    • 12
    • 16

    Overcast

Today 10 Sep Northern Ireland

A cloudy morning with rain spreading east. Becoming drier and brighter from the west in the afternoon with a few showers. Maximum temperature 18 °C.

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The Barmouth Temperature Statistics

September Temperature

Magilligan No 2 (11km)

  • Lowest 9 September, 2026

    9.8 °C
  • Average September

    14.8 °C
  • Highest 6 September, 2026

    22.4 °C

Climate (2021–2026)

Magilligan No 2 (11km)

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  • Average Low 2021–2026

    7.7 °C
  • Average 2021–2026

    10.6 °C
  • Average High 2021–2026

    13.4 °C
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