Oldcastle Weather Forecast

    • 9
    • 11

    Light rain

    • 10
    • 11

    Light rain

    • 10
    • 14

    Cloudy

    • 9
    • 12

    Heavy rain shower

    • 11
    • 14

    Heavy rain

    • 11
    • 14

    Partly cloudy

    • 12
    • 15

    Heavy rain

Today 20 Oct Wales

Overcast with hill fog to start, and often wet with rain heaviest in the east. Drier and brighter in the far southwest of the country, these conditions becoming more widespread through the afternoon. Feeling chilly despite light winds. Maximum temperature 12 °C.

Tonight 20 Oct Wales

A dry, clear interlude in the evening before rain and cloud push back in overnight. Winds strengthening through the early hours from the southwest. Minimum temperature 5 °C.

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Oldcastle Temperature Statistics

October Temperature

St-athan (14 km)

  • Lowest 17 October, 2026

    5.4 °C

  • Average October

    13.8 °C

  • Highest 2 October, 2026

    20.3 °C

Climate (2021–2026)

St-athan (14 km)

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  • Average Low 2021–2026

    9.1 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    14.8 °C
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