Shoalhaven River - Pig Island Weather Forecast
- 20
- 36
Showers. Possible storm
- 19
- 31
Showers. Possible storm
- 21
- 30
Possible shower
- 16
- 29
Shower or two
- 14
- 31
Possible late shower
- 16
- 24
Shower or two
- 13
- 23
Cloudy
Today 20 Dec Illawarra
Partly cloudy. High chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm in the morning and afternoon, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding inland. Light winds becoming northwest to northeasterly 15 to 25 km/h in the middle of the day then becoming light in the evening. Overnight temperatures falling to between 17 and 21 with daytime temperatures reaching the low to mid 30s.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- South to southwesterly below 10 knots increasing to 10 to 15 knots in the early morning then shifting north to northeasterly in the morning. Winds reaching up to 20 knots south of Port Kembla during the afternoon and evening.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres south of Port Kembla during the afternoon.
- 1st Swell
- Northeasterly below 1 metre.
- Weather
- Partly cloudy. 60% chance of showers. The chance of a thunderstorm during the morning and afternoon.
- 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 later on Sunday or Monday.
Shoalhaven River - Pig Island Temperature Statistics View More
December Temperature
Nowra (RAN Air Station) (12km)
Lowest 1 December, 2025
8.8 °CAverage December
20.9 °CHighest 6 December, 2025
39.5 °C
Climate (2020–Present)
Nowra (RAN Air Station) (12km)
Average Low 2020–2025
12 °CAverage 2020–2025
16.5 °CAverage High 2020–2025
22.4 °C