Grants Lagoon Entrance Weather Forecast
- 14
- 22
Mostly sunny
- 11
- 21
Sunny
- 11
- 24
Partly cloudy
- 16
- 25
Partly cloudy
- 15
- 21
Cloudy
- 14
- 23
Cloudy
- 16
- 25
Shower or two
Today 25 Jan St Helens
Partly cloudy. Winds southerly 15 to 25 km/h tending south to southeasterly 25 to 40 km/h in the morning.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- North to northeasterly 15 to 20 knots shifting southerly 15 to 25 knots in the late morning. Winds reaching up to 30 knots during the afternoon and evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday.
- 1st Swell
- Southeasterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then tending south to southeasterly 1 to 1.5 metres during the afternoon.
- Weather
- Partly cloudy.
- Weather Situation
- A cold front clears the state this morning, with a high pressure system expected to move in from the west today and move over the state on Monday to be in the Tasman Sea on Tuesday as a trough approaches from the west and crosses the state during the afternoon and evening. On Wednesday a ridge of high pressure extends from the west.
Grants Lagoon Entrance Temperature Statistics View More
January Temperature
St Helens Aerodrome (9km)
Lowest 12 January, 2026
9.4 °CAverage January
17 °CHighest 7 January, 2026
33.6 °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