Dee Why Beach Weather Forecast
- 9
- 18
Sunny
- 10
- 19
Mostly sunny
- 13
- 19
Possible shower
- 11
- 21
Sunny
- 11
- 20
Sunny
- 13
- 21
Sunny
- 14
- 22
Shower or two
Today 31 Aug Sydney
Sunny. Light winds.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- Westerly 10 to 15 knots becoming variable about 10 knots in the early afternoon.
- Seas
- Below 1 metre.
- 1st Swell
- Southerly 2.5 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
- Weather
- Sunny.
- Caution
- Large and powerful surf conditions are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.
- Weather Situation
- A ridge of high pressure is extending across from the west and will be the dominant feature in the region for the coming days. A trough or cold front is forecast to cross the far south on Wednesday.
Dee Why Beach Temperature Statistics View More
August Temperature
Terrey Hills (9km)
Lowest 18 August, 2025
5.1 °CAverage August
12.4 °CHighest 26 August, 2025
21.7 °C
Climate (2020–Present)
Terrey Hills (9km)
Average Low 2020–2025
13.4 °CAverage 2020–2025
16.9 °CAverage High 2020–2025
21.7 °C