Stack Island Weather Forecast
- 13
- 16
Showers
- 11
- 17
Shower or two
- 11
- 17
Shower or two
- 12
- 17
Showers
- 11
- 18
Shower or two
- 13
- 18
Showers
- 12
- 19
Shower or two
Today 25 Jun Illawarra
Partly cloudy. High chance of showers. Light winds becoming south to southeasterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon. Overnight temperatures falling to between 4 and 10 with daytime temperatures reaching between 12 and 16.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- South to southeasterly 10 to 15 knots, reaching up to 20 knots north of Point Perpendicular early in the morning. Winds tending east to southeasterly below 10 knots during the day.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre during the morning.
- 1st Swell
- South to southeasterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore north of Port Kembla.
- Weather
- Partly cloudy. 80% chance of showers.
- Weather Situation
- A high pressure system to the south of SA will gradually strengthen as it moves eastwards over the next few days, reaching the Tasman Sea by the weekend, maintaining south to southeasterly winds over the coastal waters for much of the period. Meanwhile, a weak coastal trough is located along the New South Wales coast. Winds will tend east to northeasterly by early next week as the high moves further into the Tasman Sea.
Stack Island Temperature Statistics View More
June Temperature
Kiama (Bombo Headland) (3km)
Lowest 23 June, 2026
9.8 °CAverage June
15.5 °CHighest 17 June, 2026
21.9 °C
Climate (2021–2026)
Kiama (Bombo Headland) (3km)
Average Low 2021–2026
14.9 °CAverage 2021–2026
17.9 °CAverage High 2021–2026
21.5 °C