Stack Island Weather Forecast
- 17
- 22
Wind easing. Cloudy
- 16
- 25
Partly cloudy
- 18
- 29
Sunny
- 17
- 23
Partly cloudy
- 17
- 21
Shower or two
- 16
- 23
Shower or two
- 18
- 26
Shower or two
Today 7 Dec Illawarra
Partly cloudy. Slight chance of a shower, becoming less likely this afternoon. The chance of a thunderstorm in the morning and early afternoon. Winds south to southwesterly 25 to 35 km/h turning east to southeasterly 20 to 30 km/h during the morning. Daytime maximum temperatures between 19 and 25.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- Southerly 15 to 25 knots, reaching up to 30 knots during the morning. Winds turning southeasterly in the early afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
- 1st Swell
- Southerly below 1 metre, increasing to 1.5 to 2.5 metres during the morning.
- Weather
- Partly cloudy. The chance of a thunderstorm north of Point Perpendicular early this morning.
- Weather Situation
- A strong cold front is bringing a fresh to strong southwesterly change for southern parts of the coast, and strong northeasterly winds ahead of it for central and northern parts of the coast. This southwesterly change will reach central and northern parts of the coast this afternoon as the cold front moves east, before winds tend north to northeasterly across the entire coast on Monday as ridge builds along the coast. Another cold front will brush southern and central parts of the coast on Tuesday and Wednesday, bringing a southwesterly change with it.
Stack Island Temperature Statistics View More
December Temperature
Kiama (Bombo Headland) (3km)
Lowest 2 December, 2025
11.9 °CAverage December
20.4 °CHighest 5 December, 2025
32.5 °C
Climate (2020–Present)
Kiama (Bombo Headland) (3km)
Average Low 2020–2025
14.7 °CAverage 2020–2025
17.8 °CAverage High 2020–2025
21.4 °C