Stack Island Weather Forecast

    • 17
    • 20

    Rain

    • 15
    • 21

    Shower or two

    • 16
    • 20

    Showers

    • 17
    • 20

    Showers

    • 14
    • 19

    Shower or two

    • 13
    • 18

    Mostly sunny

    • 12
    • 18

    Partly cloudy

Today 26 May Illawarra

Cloudy. Very high chance of rain. The chance of a thunderstorm in the late afternoon and evening, possibly severe with heavy rain which may lead to flash flooding along the coastal fringe. Light winds. Overnight temperatures falling to between 12 and 16 with daytime temperatures reaching between 15 and 20.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Variable about 10 knots, reaching up to 20 knots offshore in the late morning and afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Easterly 2 to 2.5 metres.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm in the afternoon and evening.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

May Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 8 May, 2026

    10.1 °C

  • Average May

    17.4 °C

  • Highest 2 May, 2026

    23.4 °C

Climate (2021–Present)

Kiama (Bombo Headland) (3km)

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  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    17.8 °C

  • Average High 2021–2026

    21.5 °C
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