Thirroul Weather Forecast

    • 17
    • 29

    Clear

    • 19
    • 25

    Shower or two

    • 14
    • 17

    Shower or two

    • 15
    • 20

    Shower or two

    • 17
    • 23

    Partly cloudy

    • 16
    • 27

    Sunny

    • 17
    • 27

    Possible shower

Today 20 Sep Wollongong

Clear. Winds northwesterly 15 to 25 km/h increasing to 20 to 30 km/h in the late evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Northerly 10 to 15 knots, reaching up to 20 knots offshore south of Point Perpendicular during the afternoon and evening. Winds turning northwesterly in the evening.
Seas
Around 1 metre.
1st Swell
Southerly 1 to 1.5 metres.
Weather
Clear.
Weather Situation
A high pressure system over the Tasman Sea today directs a northwesterly flow over the state, ahead of a fresh and gusty southerly change moving across the the coastal waters on Monday, reaching the QLD border by Tuesday. A second high pressure system is forecast to slip south and enter the Tasman Sea by mid-week, turning the winds east to northeasterly.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Thirroul Temperature Statistics View More

September Temperature

Bellambi (6km)

  • Lowest 16 September, 2026

    9.2 °C

  • Average September

    17 °C

  • Highest 5 September, 2026

    30.7 °C

Climate (2021–2026)

Bellambi (6km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18 °C

  • Average High 2021–2026

    21.8 °C
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