Shoalhaven Offshore Weather Forecast
- 21
- 24
Shower or two. Possible storm
- 22
- 24
Possible shower
- 20
- 23
Shower or two
- 19
- 23
Late shower or two
- 19
- 20
Shower or two
- 17
- 20
Partly cloudy
- 18
- 20
Partly cloudy
Today 21 Dec Illawarra
Becoming cloudy. High chance of showers, most likely during this afternoon and evening. A thunderstorm likely during this afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding. Light winds becoming northwest to northeasterly 15 to 20 km/h in the middle of the day then tending west to northwesterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures 30 to 36.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the middle of the day then tending north to northeasterly in the evening. Winds reaching up to 20 knots offshore north of Port Kembla during the afternoon and evening.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres offshore north of Port Kembla by early evening.
- 1st Swell
- Northeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Port Kembla during the morning.
- Weather
- Becoming cloudy. 50% chance of showers. The chance of a thunderstorm during this afternoon and early evening.
- Weather Situation
- A high in the Tasman Sea is directing northerly winds over central and northern Coastal Waters while a weak coastal trough brings southerly winds to the remainder. A cold front will bring a fresh to strong southerly change to the southern half on Monday.
Shoalhaven Offshore Temperature Statistics View More
December Temperature
Kiama (Bombo Headland) (23km)
Lowest 2 December, 2025
11.9 °CAverage December
20.6 °CHighest 5 December, 2025
32.5 °C
Climate (2020–Present)
Kiama (Bombo Headland) (23km)
Average Low 2020–2025
14.7 °CAverage 2020–2025
17.8 °CAverage High 2020–2025
21.4 °C