Dee Why Weather Forecast

    • 18
    • 24

    Mostly sunny

    • 21
    • 31

    Possible shower developing

    • 21
    • 24

    Shower or two

    • 21
    • 24

    Shower or two

    • 21
    • 24

    Cloudy

    • 21
    • 24

    Cloudy

    • 22
    • 26

    Cloudy

Today 21 Jan Sydney

Mostly sunny morning. The chance of a thunderstorm in the outer west in the afternoon. Light winds becoming east to northeasterly 15 to 20 km/h in the early afternoon then becoming light in the late evening.

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Dee Why Temperature Statistics View More

January Temperature

Terrey Hills (8km)

  • Lowest 20 January, 2025

    13 °C

  • Average January

    20.7 °C

  • Highest 6 January, 2025

    33.4 °C

Climate (2020–Present)

Terrey Hills (8km)

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  • Average Low 2020–2025

    13.3 °C

  • Average 2020–2025

    16.8 °C

  • Average High 2020–2025

    21.6 °C
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