Boat Harbour Weather Forecast
- 22
- 41
Afternoon cool change. Windy
- 18
- 22
Shower or two
- 17
- 23
Possible shower
- 16
- 27
Partly cloudy
- 18
- 26
Shower or two
- 18
- 25
Shower or two
- 16
- 23
Shower or two
Today 10 Jan Illawarra
Sunny day. The chance of a thunderstorm inland late this afternoon and evening. Winds northwesterly 35 to 50 km/h shifting southerly 20 to 30 km/h in the evening. Daytime maximum temperatures 36 to 42.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- Northerly 20 to 30 knots decreasing to 15 to 25 knots in the early morning then tending northwest to northeasterly 20 to 30 knots in the late afternoon.
- Seas
- 1.5 to 2.5 metres.
- 1st Swell
- Northeasterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
- Weather
- Sunny day. The chance of a thunderstorm offshore south of Point Perpendicular late this afternoon and evening.
- Weather Situation
- North to northeasterly winds along the Coastal Waters will continue to freshen through this week as a high over the Tasman Sea strengthens. A cold front and its associated trough will begin moving up the south coast today bringing fresh to strong southerlies in its wake. The trough is expected to stall about the central coast during Sunday, then continue to the reach the northern border by Monday. Coastal winds broadly shifty easterly during the new week as a high pressure system settles over the Tasman Sea.
Boat Harbour Temperature Statistics View More
January Temperature
Point Perpendicular (2km)
Lowest 1 January, 2026
16.1 °CAverage January
21.3 °CHighest 8 January, 2026
30.3 °C
Climate (2021–Present)
Point Perpendicular (2km)
Average Low 2021–2026
14.7 °CAverage 2021–2026
17.4 °CAverage High 2021–2026
20.7 °C