Cassie Rock Weather Forecast

    • 21
    • 22

    Rain increasing

    • 19
    • 22

    Rain at times

    • 20
    • 25

    Partly cloudy

    • 22
    • 25

    Showers. Possible late storm

    • 22
    • 26

    Shower or two. Possible storm

    • 20
    • 23

    Showers

    • 20
    • 22

    Shower or two

Today 11 Jan Sydney

Cloudy. The chance of smoke haze in the outer west in the early afternoon. High chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm in the late afternoon and evening. Winds southeasterly 25 to 35 km/h decreasing to 15 to 25 km/h in the late evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southerly 20 to 25 knots tending southeasterly 15 to 25 knots in the evening.
Seas
2 to 2.5 metres.
1st Swell
Southerly 1.5 metres, increasing to 2 to 2.5 metres around midday.
Weather
Cloudy. 70% chance of showers. The chance of a thunderstorm in the evening.
Weather Situation
A trough is moving northwards along the coast, bringing fresh to strong southerlies in its wake. The trough is expected to stall about the central coast during today, then continue north to reach the northern border by Monday. Coastal winds broadly shifty easterly during the new week as a high pressure system settles over the Tasman Sea.
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  • Temperature Forecast Bureau of Meteorology

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Cassie Rock Temperature Statistics View More

January Temperature

Terrey Hills (10km)

  • Lowest 2 January, 2026

    15.8 °C

  • Average January

    22.4 °C

  • Highest 8 January, 2026

    34.3 °C

Climate (2021–Present)

Terrey Hills (10km)

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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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