Stack Island Weather Forecast

    • 16
    • 23

    Shower or two

    • 17
    • 21

    Possible early shower

    • 16
    • 22

    Partly cloudy

    • 17
    • 24

    Partly cloudy

    • 19
    • 26

    Possible shower or storm

    • 20
    • 26

    Possible shower

    • 20
    • 25

    Partly cloudy

Today 31 Dec Illawarra

Partly cloudy. Medium chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Light winds becoming east to southeasterly 15 to 25 km/h in the morning then tending south to southeasterly 15 to 20 km/h in the evening. Overnight temperatures falling to between 11 and 15 with daytime temperatures reaching the low to mid 20s.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Variable about 10 knots becoming southerly 15 to 20 knots in the middle of the day.
Seas
Below 0.5 metres, increasing to around 1 metre around midday.
1st Swell
Southeasterly 1 to 1.5 metres, tending easterly 1.5 to 2.5 metres during the morning.
Weather
Partly cloudy. The chance of a thunderstorm inshore in the late afternoon and evening.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

December Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 2 December, 2025

    11.9 °C

  • Average December

    20.2 °C

  • Highest 5 December, 2025

    32.5 °C

Climate (2020–Present)

Kiama (Bombo Headland) (3km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    17.8 °C

  • Average High 2020–2025

    21.4 °C
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