Number One Cove Weather Forecast
- 14
- 34
Late shower or two
- 14
- 20
Showers
- 14
- 23
Shower or two
- 15
- 24
Partly cloudy
- 13
- 27
Sunny
- 12
- 29
Sunny
- 14
- 23
Possible shower
Today 21 Sep Hunter
Mostly sunny. Medium chance of showers in the late afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Winds northwesterly 25 to 35 km/h shifting south to southeasterly in the early afternoon. Daytime maximum temperatures 29 to 35.
Hunter Coastal Waters
Seal Rocks to Broken Bay- Wind
- West to northwesterly 15 to 20 knots shifting south to southeasterly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots offshore north of Norah Head in the late afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres during the afternoon.
- 1st Swell
- Southerly 1 to 1.5 metres, increasing to 2 to 2.5 metres later in the evening.
- Weather
- The chance of smoke haze in the morning. Mostly sunny.
- Weather Situation
- A high pressure system over the Tasman Sea directs a northwesterly flow over much of the state, with a fresh and gusty southerly change moving across the coastal waters today, reaching the QLD border by Tuesday. A second high pressure system is forecast to slip south and enter the Tasman Sea by mid-week, turning the winds east to northeasterly.
Number One Cove Temperature Statistics View More
September Temperature
Williamtown RAAF Base (20km)
Lowest 9 September, 2026
4.4 °CAverage September
16.9 °CHighest 5 September, 2026
32.8 °C
Climate (2021–2026)
Williamtown RAAF Base (20km)
Average Low 2021–2026
13.5 °CAverage 2021–2026
18.2 °CAverage High 2021–2026
24 °C