Cornwall Weather Forecast

    • 6
    • 11

    Partly cloudy

    • 3
    • 13

    Sunny

    • 1
    • 13

    Sunny

    • 3
    • 11

    Shower or two

    • 2
    • 11

    Mostly sunny

    • 2
    • 12

    Mostly sunny

    • 3
    • 13

    Partly cloudy

Today 20 Jun East Coast

Cloudy. Slight chance of a shower in the south, near zero chance elsewhere. Winds southerly 15 to 25 km/h becoming light in the late afternoon. Daytime maximum temperatures between 8 and 13.

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  • Temperature Forecast Bureau of Meteorology

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Cornwall Temperature Statistics View More

June Temperature

St Helens Aerodrome (27km)

  • Lowest 15 June, 2026

    2.9 °C

  • Average June

    11.6 °C

  • Highest 10 June, 2026

    18.4 °C

Climate (2021–2026)

St Helens Aerodrome (27km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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