The Barway Weather Forecast
- 6
- 17
Windy. Partly cloudy
- 12
- 23
Sunny
- 8
- 23
Becoming windy. Sunny
- 9
- 16
Partly cloudy
- 5
- 17
Mostly sunny
- 5
- 19
Mostly sunny
- 8
- 18
Possible shower
Today 18 Sep St Helens
Partly cloudy. Slight chance of a shower, most likely later tonight. Winds northwesterly 30 to 45 km/h.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- West to northwesterly 20 to 30 knots, reaching up to 35 knots offshore during the afternoon and evening.
- Seas
- 2 to 3 metres, increasing to 2 to 4 metres offshore.
- 1st Swell
- Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
- Weather
- Mostly clear.
- Weather Situation
- A high to the north of Tasmania is combining with a cold front passing to the south of Tasmania to direct a vigorous westerly flow over the state, with these conditions to continue overnight and early Saturday. A weak ridge is forecast to extend over Tasmania on Saturday afternoon and evening, ahead of another cold front to cross the state on Sunday evening. The flow will tend colder southwesterly on Monday morning, with a high to establish over the Bight. This high is expected to move to the north of Tasmania on Tuesday morning and lie to the northeast of the state by Tuesday evening.
The Barway Temperature Statistics View More
September Temperature
St Helens Aerodrome (8km)
Lowest 17 September, 2026
2.2 °CAverage September
11.7 °CHighest 10 September, 2026
22.2 °C
Climate (2021–2026)
St Helens Aerodrome (8km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.3 °C