Stack Island Weather Forecast

    • 11
    • 17

    Possible shower

    • 11
    • 17

    Partly cloudy

    • 12
    • 19

    Cloud clearing

    • 11
    • 20

    Sunny

    • 13
    • 22

    Mostly sunny

    • 14
    • 25

    Mostly sunny

    • 16
    • 24

    Shower or two

Today 9 Sep Illawarra

Cloudy. Slight chance of a shower in the late morning and afternoon. Light winds becoming west to southwesterly 15 to 20 km/h in the morning then turning southerly 25 to 35 km/h during the morning. Overnight temperatures falling to between 5 and 8 with daytime temperatures reaching between 14 and 19.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
North to northwesterly 10 to 15 knots shifting southerly 20 to 25 knots during the morning. Winds reaching up to 30 knots during the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 2 to 3 metres around midday.
1st Swell
Southerly 1 to 1.5 metres, increasing to 2 to 3 metres during the afternoon.
Weather
Cloudy. 50% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

September Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 1 September, 2026

    11.1 °C

  • Average September

    17.8 °C

  • Highest 5 September, 2026

    29.8 °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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