Cassie Rock Weather Forecast

    • 15
    • 17

    Showers

    • 15
    • 18

    Cloudy

    • 13
    • 20

    Cloud clearing

    • 13
    • 24

    Sunny

    • 16
    • 28

    Sunny

    • 19
    • 26

    Shower or two

    • 15
    • 21

    Showers

Today 27 Sep Sydney

Cloudy. Very high chance of showers, most likely in the late morning and afternoon. Winds south to southeasterly 20 to 30 km/h.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southerly 15 to 25 knots, tending south to southeasterly 25 to 30 knots in the middle of the day. Winds tending southeasterly 15 to 20 knots in the evening.
Seas
1 to 2 metres.
1st Swell
Southerly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Weather
Cloudy. 95% chance of showers.
Weather Situation
A cold front and trough will pass over the Tasman Sea bringing a southerly change northward along the NSW coast. A ridge of high pressure will build over the coastal waters in the wake of the southerly change, turning winds east to northeasterly over the coastal waters for the early days of the week.
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  • Temperature Forecast Bureau of Meteorology

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Cassie Rock Temperature Statistics View More

September Temperature

Terrey Hills (10km)

  • Lowest 10 September, 2026

    8.1 °C

  • Average September

    16.7 °C

  • Highest 21 September, 2026

    32 °C

Climate (2021–2026)

Terrey Hills (10km)

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  • Average Low 2021–2026

    13.6 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    22 °C
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