Castletown Weather Forecast

    • 13
    • 16

    Cloudy

    • 13
    • 15

    Partly cloudy

    • 15
    • 16

    Light rain

    • 14
    • 16

    Cloudy

    • 14
    • 16

    Cloudy

    • 15
    • 17

    Overcast

Today 16 Sep South West Scotland and Lothian Borders

Dry and bright for many in the morning, but a few showers in the southwest. Cloudier afternoon with some showers before a band of heavy rain pushes east in evening. Maximum temperature 17 °C.

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Castletown Temperature Statistics

September Temperature

Ronaldsway (1km)

  • Lowest 9 September, 2026

    12.3 °C

  • Average September

    15.7 °C

  • Highest 12 September, 2026

    19.8 °C

Climate (2021–2026)

Ronaldsway (1km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.2 °C

  • Average High 2021–2026

    13.3 °C
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