Chinamans Island Weather Forecast
- 18
- 27
Showers. Possible storm
- 20
- 25
Becoming cloudy
- 17
- 24
Partly cloudy
- 16
- 28
Sunny day. Late shower or two
- 15
- 20
Shower or two
- 13
- 21
Partly cloudy
- 13
- 22
Mostly sunny
Today 21 Dec South Coast
Cloudy. Very high chance of rain, most likely in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding. Light winds becoming north to northeasterly 15 to 25 km/h in the early afternoon then tending north to northwesterly in the evening. Daytime maximum temperatures 24 to 29.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- East to northeasterly 10 to 15 knots, reaching up to 20 knots offshore north of Port Kembla during the afternoon and evening. Winds tending north to northeasterly in the 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.
- Weather
- Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the 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.
Chinamans Island Temperature Statistics View More
December Temperature
Ulladulla (11km)
Lowest 2 December, 2025
9.7 °CAverage December
19.7 °CHighest 6 December, 2025
37.1 °C
Climate (2020–Present)
Ulladulla (11km)
Average Low 2020–2025
13.7 °CAverage 2020–2025
17 °CAverage High 2020–2025
20.8 °C