Grants Lagoon Entrance Weather Forecast
- 8
- 16
Partly cloudy
- 8
- 21
Partly cloudy
- 6
- 21
Mostly sunny
- 10
- 19
Partly cloudy
- 10
- 21
Partly cloudy
- 7
- 17
Partly cloudy
- 6
- 18
Partly cloudy
Today 12 Apr St Helens
Partly cloudy. Winds west to northwesterly 15 to 25 km/h tending west to southwesterly 20 to 30 km/h during the morning.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Westerly 20 to 25 knots, reaching up to 30 knots offshore during the day. Winds turning southwesterly during the day.
- Seas
- 1 to 2 metres, increasing to 2 to 3 metres offshore.
- 1st Swell
- Northwest to southwesterly below 1 metre inshore, increasing to 2 to 3 metres offshore.
- Weather
- Partly cloudy. 60% chance of showers offshore, near zero chance elsewhere.
- Weather Situation
- A high pressure system build over the Bight during Sunday, maintaining a cold southwesterly stream over Tasmania during the day. The high is expected to move to the north of Tasmania later Monday, extending and ridge over the state as it passes. A cold front approaches from the west on Tuesday and is expected to cross later in the day, with another front approaching from the west later Wednesday. These systems will maintain cooler weather over the state early next week.
Grants Lagoon Entrance Temperature Statistics View More
April Temperature
St Helens Aerodrome (9km)
Lowest 4 April, 2026
6.5 °CAverage April
14.4 °CHighest 1 April, 2026
26 °C
Climate (2021–Present)
St Helens Aerodrome (9km)
Average Low 2021–2026
9.3 °CAverage 2021–2026
13.3 °CAverage High 2021–2026
18.2 °C