Cowan Creek - Hallets Beach Weather Forecast
- 17
- 37
Windy. Mostly clear
- 16
- 21
Partly cloudy
- 13
- 25
Sunny
- 14
- 23
Partly cloudy
- 15
- 28
Shower or two
- 17
- 24
Shower or two
- 11
- 16
Shower or two
Today 22 Oct Sydney
Mostly sunny. Slight chance of a shower in the afternoon and early evening. The chance of a thunderstorm in the afternoon and early evening. Damaging winds possible. Winds north to northwesterly 35 to 50 km/h turning westerly 25 to 35 km/h in the evening then decreasing to 15 to 25 km/h in the late evening.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Northwesterly 20 to 30 knots decreasing to 15 to 25 knots in the late afternoon then tending westerly 10 to 15 knots in the evening.
- Seas
- Below 0.5 metres.
- Weather
- Mostly clear. The chance of a thunderstorm.
- Weather Situation
- North to northeasterly winds over the local waters will shift fresh to strong northwesterly this afternoon and west to southwesterly this evening with the passage of a strong cold front late in the day. The winds will then shift south to southwesterly Thursday morning and east to southeasterly Thursday afternoon as a high pressure ridge spreads across New South Wales. This ridge will persist through Saturday when winds will turn northeasterly then northwesterly ahead of the next cold front which will cross the state Sunday.
Cowan Creek - Hallets Beach Temperature Statistics View More
October Temperature
Terrey Hills (10km)
Lowest 3 October, 2025
8.6 °CAverage October
19.7 °CHighest 20 October, 2025
35.9 °C
Climate (2020–Present)
Terrey Hills (10km)
Average Low 2020–2025
13.4 °CAverage 2020–2025
16.9 °CAverage High 2020–2025
21.7 °C