Dark Bay Weather Forecast
- 17
- 29
Windy. Cloudy
- 15
- 18
Showers
- 14
- 18
Cloudy
- 13
- 20
Cloud clearing
- 14
- 24
Sunny
- 16
- 28
Sunny
- 18
- 27
Showers
Today 26 Sep Sydney
Partly cloudy. Slight chance of a shower. The chance of a thunderstorm. Winds southerly 25 to 35 km/h increasing to 30 to 45 km/h in the evening.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- Northwest to northeasterly 15 to 25 knots tending southerly 20 to 30 knots in the evening. Winds reaching up to 35 knots inshore in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres later in the evening.
- 1st Swell
- Southerly below 1 metre.
- Weather
- Partly cloudy. The chance of a thunderstorm in the late afternoon and evening.
- Weather Situation
- A cold front and trough will pass over the Tasman Sea today and tomorrow, bringing a southerly change tracking northward along the NSW coast. A ridge of high pressure will build over the coastal waters in the wake of the southerly change, turning winds east to northeasterly over the coastal waters for the early days of the week.
Dark Bay Temperature Statistics View More
September Temperature
Sydney Airport (14km)
Lowest 18 September, 2026
9.1 °CAverage September
18.1 °CHighest 20 September, 2026
32.7 °C
Climate (2021–2026)
Sydney Airport (14km)
Average Low 2021–2026
15 °CAverage 2021–2026
18.8 °CAverage High 2021–2026
23.5 °C