Great Mackerel Beach Weather Forecast

    • 17
    • 22

    Possible shower

    • 12
    • 16

    Becoming windy. Partly cloudy

    • 11
    • 17

    Cloud clearing

    • 11
    • 22

    Sunny

    • 13
    • 26

    Sunny

    • 14
    • 27

    Sunny

    • 17
    • 26

    Partly cloudy

Today 15 Sep Sydney

Partly cloudy. Medium chance of showers. Winds southerly 20 to 30 km/h.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
South to southeasterly 15 to 20 knots becoming southerly 20 to 30 knots in the evening then decreasing to 15 to 25 knots in the late evening. Squalls possible with the wind change.
Seas
Below 0.5 metres.
Weather
Cloudy. 50% chance of showers.
Weather Situation
A cold front systems will cross Sydney Waters later today, with fresh to strong, gusty southerly winds and large powerful waves in its wake. Winds and waves will gradually ease from late Thursday onwards as a high pressure system moves across the state later in the week into the weekend, while extending a ridge across the coastal waters.
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  • Temperature Forecast Bureau of Meteorology

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Great Mackerel Beach Temperature Statistics View More

September Temperature

Terrey Hills (13km)

  • Lowest 10 September, 2026

    8.1 °C
  • Average September

    16.2 °C
  • Highest 5 September, 2026

    30.8 °C

Climate (2021–2026)

Terrey Hills (13km)

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  • Average Low 2021–2026

    13.6 °C
  • Average 2021–2026

    17.1 °C
  • Average High 2021–2026

    21.9 °C
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