Stack Island Weather Forecast

    • 11
    • 19

    Partly cloudy

    • 11
    • 18

    Mostly sunny

    • 9
    • 18

    Mostly sunny

    • 12
    • 17

    Shower or two

    • 12
    • 17

    Showers

    • 12
    • 17

    Showers

    • 12
    • 18

    Showers

Today 12 Aug Illawarra

Partly cloudy. Slight chance of a shower, becoming less likely late this afternoon and evening. Winds westerly 25 to 35 km/h. Daytime maximum temperatures between 12 and 19.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Northwesterly 15 to 20 knots turning westerly in the late morning. Winds reaching up to 30 knots offshore in the late evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
1st Swell
Southerly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm offshore late this afternoon and evening.
Weather Situation
A cold front and its associated trough are forecast to cross the coastal waters late Wednesday into early Thursday, with fresh westerly winds turning southwesterly in their wake. Then, a high pressure system moving over South Australia is expected to drift towards Tasmania later in the week through the weekend, directing onshore south to southeasterly winds over the coastal waters.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

August Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 8 August, 2026

    8.9 °C

  • Average August

    13.8 °C

  • Highest 3 August, 2026

    21.6 °C

Climate (2021–2026)

Kiama (Bombo Headland) (3km)

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  • Average Low 2021–2026

    14.9 °C

  • Average 2021–2026

    17.9 °C

  • Average High 2021–2026

    21.5 °C
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