Dee Why Beach Weather Forecast

    • 20
    • 29

    Sunny

    • 19
    • 21

    Shower or two

    • 17
    • 19

    Cloudy

    • 17
    • 21

    Partly cloudy

    • 17
    • 23

    Partly cloudy

    • 18
    • 24

    Partly cloudy

    • 18
    • 26

    Partly cloudy

Today 24 Dec Sydney

Mostly sunny. Slight chance of a shower along the coastal fringe at night. Near zero chance of rain elsewhere. Light winds becoming northwest to southwesterly 15 to 25 km/h in the middle of the day then tending southeast to southwesterly 20 to 30 km/h in the evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
East to southeasterly 10 to 15 knots becoming variable about 10 knots before dawn then becoming north to northeasterly 15 to 20 knots in the middle of the day.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southerly around 1 metre, increasing to 1 to 2 metres during the morning, then decreasing to around 1 metre during the afternoon.
Weather
Mostly sunny day. The chance of a thunderstorm offshore in the evening.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dee Why Beach Temperature Statistics View More

December Temperature

Terrey Hills (9km)

  • Lowest 3 December, 2025

    11.3 °C

  • Average December

    22 °C

  • Highest 19 December, 2025

    40.2 °C

Climate (2020–Present)

Terrey Hills (9km)

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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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