Dee Why Weather Forecast

    • 22
    • 34

    Sunny morning. Possible storm

    • 22
    • 28

    Possible shower

    • 21
    • 34

    Possible storm

    • 23
    • 28

    Shower or two

    • 20
    • 29

    Shower or two

    • 20
    • 27

    Possible shower

    • 20
    • 23

    Shower or two

Today 19 Dec Sydney

Sunny morning. Slight chance of a shower in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Light winds becoming southeast to southwesterly 15 to 20 km/h in the middle of the day.

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Dee Why Temperature Statistics View More

December Temperature

Terrey Hills (8km)

  • Lowest 3 December, 2025

    11.3 °C

  • Average December

    20.8 °C

  • Highest 6 December, 2025

    39.9 °C

Climate (2020–Present)

Terrey Hills (8km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    16.9 °C

  • Average High 2020–2025

    21.8 °C
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