Grannys Gut Weather Forecast
- 12
- 21
Rain increasing
- 13
- 23
Shower or two
- 12
- 20
Shower or two clearing
- 11
- 21
Partly cloudy
- 9
- 19
Partly cloudy
- 9
- 20
Partly cloudy
- 9
- 20
Mostly sunny
Today 21 Dec St Helens
Cloudy. Very high chance of rain, most likely in the late afternoon and evening. Light winds.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- West to northwesterly 10 to 15 knots tending northeast to southeasterly in the late afternoon then tending southwesterly in the late evening. Winds reaching up to 30 knots offshore in the late evening.
- Seas
- 1 to 2 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening.
- 1st Swell
- Southerly around 1 metre.
- Weather
- Cloudy. 90% chance of rain. The chance of a thunderstorm in the late afternoon and evening.
Grannys Gut Temperature Statistics View More
December Temperature
St Helens Aerodrome (1km)
Lowest 2 December, 2025
6.6 °CAverage December
16 °CHighest 17 December, 2025
29.5 °C
Climate (2020–Present)
St Helens Aerodrome (1km)
Average Low 2020–2025
9.3 °CAverage 2020–2025
13.3 °CAverage High 2020–2025
18.2 °C