Stack Island Weather Forecast

    • 16
    • 18

    Showers

    • 13
    • 19

    Mostly sunny

    • 13
    • 19

    Shower or two

    • 13
    • 18

    Showers

    • 15
    • 20

    Shower or two

    • 15
    • 20

    Shower or two

    • 14
    • 19

    Shower or two

Today 19 May Illawarra

Cloudy. Very high chance of rain, becoming less likely at night. Winds southwesterly 15 to 20 km/h becoming light in the evening then becoming west to southwesterly 15 to 20 km/h in the late evening. Daytime maximum temperatures between 13 and 18.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southwesterly 20 to 30 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday, then increasing to 2 to 3 metres during the afternoon.
1st Swell
Northeasterly 2 to 3 metres.
Weather
Cloudy. 90% chance of rain. The chance of a thunderstorm offshore from the late morning.
Weather Situation
A trough is heading eastwards and forecast to cross the coastal waters during today. A low pressure has formed within the trough in the northeast of the state as the system enters the Tasman Sea later today. The low will then remain over the Tasman Sea while whipping fresh to strong southerly winds and large powerful swells to the coastline mid to late this week.
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

    17.7 °C

  • Highest 2 May, 2026

    23.4 °C

Climate (2021–Present)

Kiama (Bombo Headland) (3km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    17.8 °C

  • Average High 2021–2026

    21.5 °C
Get WillyWeather+ to remove ads