Swimcart Lagoon Entrance Weather Forecast
- 4
- 18
Clear
- 5
- 17
Mostly sunny
- 7
- 20
Partly cloudy
- 12
- 19
Partly cloudy
- 8
- 15
Shower or two
- 5
- 17
Mostly sunny
- 5
- 18
Mostly sunny
Today 11 Sep St Helens
Clear. Light winds.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Variable about 10 knots, reaching up to 20 knots offshore in the late afternoon.
- Seas
- Below 1 metre, increasing to around 1 metre offshore.
- 1st Swell
- Southerly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
- Weather
- Clear.
- Weather Situation
- A high pressure system over southern Victoria is forecast to move over the Tasman Sea by early Saturday and continue to slowly move east. A weak trough is expected to cross Tasmania late Sunday. A cold front is then expected to approach the state from the west on Monday, directing the flow northwesterly before crossing Tasmania overnight into early Tuesday. A southwesterly flow will establish over the state in its wake.
Swimcart Lagoon Entrance Temperature Statistics View More
September Temperature
St Helens Aerodrome (12km)
Lowest 8 September, 2026
3.5 °CAverage September
11.7 °CHighest 8 September, 2026
18.1 °C
Climate (2021–2026)
St Helens Aerodrome (12km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.3 °C