Stack Island Weather Forecast
- 15
- 23
Possible late shower
- 16
- 22
Showers
- 17
- 22
Shower or two
- 17
- 25
Possible afternoon shower
- 18
- 27
Showers increasing
- 16
- 23
Shower or two
- 13
- 19
Possible shower
Today 21 Oct Illawarra
Partly cloudy. Patchy fog inland in the early morning. Medium chance of showers in the north, slight chance elsewhere. The chance of a thunderstorm in the south in the afternoon. Light winds becoming east to northeasterly 15 to 25 km/h in the middle of the day then becoming light in the evening. Overnight temperatures falling to between 10 and 14 with daytime temperatures reaching the low to mid 20s.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- Northerly 10 to 15 knots turning northeasterly in the late morning. Winds reaching up to 20 knots offshore north of Port Kembla in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Northeasterly around 1 metre.
- Weather
- Partly cloudy. The chance of a thunderstorm south of Point Perpendicular this afternoon.
- Weather Situation
- A strong high pressure system over the Tasman Sea is maintaining northeasterly winds across the coastal waters. Very little change of weather pattern is forecast through the week due to the slow movement of the high. Then, a cold front looks set to cross the state during the weekend into early next week, bringing a southerly change in its wake.
Stack Island Temperature Statistics View More
October Temperature
Kiama (Bombo Headland) (3 km)
Lowest 9 October, 2026
11.4 °CAverage October
17.7 °CHighest 12 October, 2026
34.3 °C
Climate (2021–2026)
Kiama (Bombo Headland) (3 km)
Average Low 2021–2026
14.9 °CAverage 2021–2026
17.9 °CAverage High 2021–2026
21.5 °C