Dee Why Head Weather Forecast

    • 13
    • 23

    Late shower or two

    • 17
    • 21

    Sunny

    • 11
    • 21

    Sunny

    • 13
    • 21

    Possible shower developing

    • 11
    • 17

    Shower or two

    • 13
    • 20

    Mostly sunny

    • 13
    • 23

    Mostly sunny

Today 19 Sep Sydney

Mostly sunny day. Medium chance of showers in the late afternoon and evening. Light winds becoming north to northeasterly 15 to 20 km/h in the middle of the day then tending north to northwesterly in the early afternoon.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
West to northwesterly 10 to 15 knots turning northerly 15 to 20 knots in the late morning.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southerly around 1 metre.
Weather
Mostly sunny. 60% chance of showers.
Weather Situation
In the wake of a cold front, west to southwesterly winds will tend northerly and strengthen today as a high pressure system in the Tasman Sea drifts further east. Winds will shift west to southwesterly over the weekend as a strong cold front moves over NSW coastal waters, with southwesterly winds persisting into early next week as a series of fronts brush the south of the state.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dee Why Head Temperature Statistics View More

September Temperature

Terrey Hills (11km)

  • Lowest 1 September, 2025

    7 °C

  • Average September

    15.7 °C

  • Highest 8 September, 2025

    27.7 °C

Climate (2020–Present)

Terrey Hills (11km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    16.9 °C

  • Average High 2020–2025

    21.7 °C
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