River Derwent - South Arm Beach Weather Forecast
- 7
- 15
Shower or two
- 8
- 12
Showers easing
- 8
- 16
Partly cloudy
- 10
- 17
Shower or two
- 8
- 13
Shower or two
- 7
- 14
Possible shower
- 5
- 17
Possible shower
Today 21 Aug Hobart
Cloudy. Medium chance of showers, most likely from late this morning. Winds northwesterly 15 to 25 km/h.
Derwent Estuary
- Wind
- Northwesterly below 10 knots increasing to 15 to 20 knots in the early morning then decreasing to below 10 knots in the late afternoon.
- Seas
- Below 1 metre.
- Weather
- Cloudy. 60% chance of showers.
- Weather Situation
- A series of troughs and fronts embedded in a westerly flow are expected to cross Tasmania over the coming days. A high pressure system to the north of Tasmania brings stable conditions from late Saturday before it moves into the Tasman Sea on Sunday. A cold front then approaches Tasmania from the west on Monday, directing a northwesterly flow over the state.
River Derwent - South Arm Beach Temperature Statistics View More
August Temperature
Hobart (Ellerslie Road) (15km)
Lowest 7 August, 2026
3.4 °CAverage August
9.8 °CHighest 19 August, 2026
17.9 °C
Climate (2021–2026)
Hobart (Ellerslie Road) (15km)
Average Low 2021–2026
9.3 °CAverage 2021–2026
13.1 °CAverage High 2021–2026
18.1 °C