Dee Why Beach Weather Forecast
- 12
- 17
Partly cloudy
- 14
- 20
Sunny
- 11
- 19
Partly cloudy
- 11
- 18
Sunny
- 9
- 18
Sunny
- 12
- 17
Shower or two
- 12
- 17
Showers
Today 10 Aug Sydney
Partly cloudy. Slight chance of a shower in the outer west, near zero chance elsewhere. Winds northwesterly 25 to 40 km/h decreasing to 15 to 25 km/h in the evening.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- Northwesterly 20 to 30 knots, reaching up to 35 knots offshore in the late afternoon.
- Seas
- 2 to 3 metres.
- 1st Swell
- Northeasterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
- Weather
- Partly cloudy. The chance of a thunderstorm offshore in the late afternoon and evening.
- Weather Situation
- Strong, gusty westerly winds are gradually easing as a cold front that crossed the coastal waters today continue to move further offshore. Winds will remain fresh westerly through to midweek as another cold front and its associated trough cross the state on Wednesday. Winds will then turn south to southwesterly later in the week after passage of the second cold front.
Dee Why Beach Temperature Statistics View More
August Temperature
Terrey Hills (9km)
Lowest 5 August, 2026
4.6 °CAverage August
11.5 °CHighest 3 August, 2026
20.5 °C
Climate (2021–2026)
Terrey Hills (9km)
Average Low 2021–2026
13.5 °CAverage 2021–2026
17.1 °CAverage High 2021–2026
22 °C