Mary Bay Weather Forecast
- 13
- 20
Partly cloudy
- 12
- 20
Shower or two
- 10
- 16
Showers
- 11
- 18
Showers
- 12
- 19
Shower or two
- 13
- 19
Shower or two
- 11
- 19
Showers
Today 16 May Illawarra
Partly cloudy. The chance of a thunderstorm early this evening. Light winds.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- South to southwesterly 10 to 15 knots decreasing to about 10 knots in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- Easterly around 1 metre, increasing to 1 to 1.5 metres north of Port Kembla.
- Weather
- Partly cloudy. The chance of a thunderstorm.
- Weather Situation
- A low pressure system and trough lie off the NSW coast bringing southeasterly to southwesterly winds to the southern and central parts of the coast and light and variable winds to the northern part of the coast. This trough is forecast to persist until late today when it will move further east over the Tasman Sea. Following this a cold front will bring fresh south to southwesterly winds to the coast Saturday, with winds strengthening along the southern part of the coast Sunday. Then a low pressure system will develop offshore Monday bringing southeasterly to southwesterly winds to the coast, strong about central parts of the coast, with these winds persisting Tuesday as the low maintains its position.
Mary Bay Temperature Statistics View More
May Temperature
Point Perpendicular (13km)
Lowest 10 May, 2025
12.1 °CAverage May
17.4 °CHighest 7 May, 2025
26.2 °C
Climate (2020–Present)
Point Perpendicular (13km)
Average Low 2020–2025
14.7 °CAverage 2020–2025
17.4 °CAverage High 2020–2025
20.7 °C