Dee Why Beach Weather Forecast

    • 22
    • 24

    Shower or two

    • 22
    • 25

    Showers. Storm developing

    • 21
    • 25

    Shower or two. Becoming windy

    • 20
    • 23

    Showers

    • 19
    • 22

    Showers

    • 20
    • 23

    Showers

    • 20
    • 23

    Shower or two

Today 14 Jan Sydney

Partly cloudy. Medium chance of showers, most likely in the late afternoon and evening. The chance of a thunderstorm in the west in the afternoon and evening. Light winds becoming northeasterly 15 to 25 km/h in the morning, reaching 25 to 35 km/h near the coast in the afternoon.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northeasterly about 10 knots increasing to 15 to 20 knots in the morning.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday.
1st Swell
Southerly below 1 metre.
Weather
Mostly sunny.
Weather Situation
A weak ridge lies over the New South Wales coast, maintaining an onshore east to northeasterly airstream. Winds will increase fresh to strong on Thursday, before a trough enters the south coast and develops into a low pressure system on Friday, bringing fresh to strong southeasterly winds in its wake.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dee Why Beach Temperature Statistics View More

January Temperature

Terrey Hills (9km)

  • Lowest 12 January, 2026

    15.5 °C

  • Average January

    21.7 °C

  • Highest 10 January, 2026

    40.5 °C

Climate (2021–Present)

Terrey Hills (9km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    16.9 °C

  • Average High 2021–2026

    21.8 °C
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