Dee Why Beach Weather Forecast

    • 15
    • 18

    Showers

    • 16
    • 20

    Showers

    • 17
    • 22

    Mostly sunny

    • 16
    • 24

    Sunny

    • 17
    • 27

    Mostly sunny

    • 16
    • 21

    Cloudy

    • 14
    • 22

    Partly cloudy

Today 22 Sep Sydney

Cloudy. Very high chance of showers, most likely in the afternoon and evening. Winds southerly 15 to 25 km/h turning east to southeasterly 15 to 20 km/h during the day.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
South to southeasterly 15 to 20 knots turning easterly in the late morning and early afternoon.
Seas
1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening.
1st Swell
Southerly 1.5 to 2.5 metres, decreasing to 1.5 metres during the afternoon.
Weather
Cloudy. 90% chance of showers.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dee Why Beach Temperature Statistics View More

September Temperature

Terrey Hills (9km)

  • Lowest 10 September, 2026

    8.1 °C

  • Average September

    16.8 °C

  • Highest 5 September, 2026

    30.8 °C

Climate (2021–2026)

Terrey Hills (9km)

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  • Average Low 2021–2026

    13.6 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    22 °C
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