Swimcart Lagoon Entrance Weather Forecast
- 11
- 16
Possible shower. Windy
- 6
- 16
Partly cloudy
- 9
- 16
Showers
- 9
- 18
Becoming cloudy
- 7
- 16
Partly cloudy
- 4
- 19
Mostly sunny
- 5
- 18
Partly cloudy
Today 3 Sep St Helens
Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Damaging winds possible. Winds westerly 25 to 40 km/h tending northwesterly 15 to 20 km/h in the late evening.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Northwesterly 25 to 30 knots, reaching up to 35 knots offshore during the day. Winds tending westerly in the middle of the day.
- Seas
- 2 to 3 metres, increasing to 3 to 4 metres offshore.
- 1st Swell
- Southeast to southwesterly 1 to 2 metres, tending west to southwesterly 2 to 3 metres during the afternoon.
- Weather
- Partly cloudy. 60% chance of showers.
- Weather Situation
- A strong westerly flow will gradually ease through Thursday evening and Friday before a low pressure system approaches from the west early Saturday. This low is expected to cross southern Tasmania on Saturday, bringing a series of troughs and a cold front over the state. A west to southwesterly airstream is expected to follow the low with a new weak cold front approaching the west coast late Sunday. This front is expected to cross the state on Monday before a ridge of high pressure develops from the west.
Swimcart Lagoon Entrance Temperature Statistics View More
September Temperature
St Helens Aerodrome (12km)
Lowest 1 September, 2026
6.9 °CAverage September
13 °CHighest 1 September, 2026
17.3 °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