Summercloud Bay Weather Forecast
- 17
- 33
Possible late shower
- 15
- 21
Cloudy
- 15
- 22
Cloudy
- 14
- 26
Partly cloudy
- 14
- 31
Sunny
- 17
- 31
Possible shower developing
- 18
- 27
Shower or two
Today 14 Dec Illawarra
Partly cloudy. Medium chance of showers. The chance of a thunderstorm in the early morning. Winds west to northwesterly 25 to 40 km/h shifting south to southeasterly 30 to 45 km/h in the evening. Overnight temperatures falling to between 14 and 18 with daytime temperatures reaching 27 to 32.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- North to northwesterly 10 to 15 knots tending north to northeasterly 15 to 25 knots in the middle of the day then shifting southerly in the evening. Winds reaching up to 30 knots in the evening.
- Seas
- Around 1 metre, increasing to 1.5 to 2 metres south of Port Kembla by early evening.
- 1st Swell
- Easterly 1 to 1.5 metres, tending northeasterly 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
- Weather
- Partly cloudy.
- Weather Situation
- A trough will move across the state's south and west today as a cold front passes to the south. Then, the system will sweep the coastal waters on Sunday through the first half of Monday, bringing a fresh to strong southerly wind change in its wake. Southerly winds will gradually ease from the south and turn easterly early next week as a new high enters the Bight and extends a ridge across the coastal waters.
Summercloud Bay Temperature Statistics View More
December Temperature
Point Perpendicular (14km)
Lowest 2 December, 2025
10.3 °CAverage December
20 °CHighest 5 December, 2025
33 °C
Climate (2020–Present)
Point Perpendicular (14km)
Average Low 2020–2025
14.7 °CAverage 2020–2025
17.4 °CAverage High 2020–2025
20.7 °C