Old Man Rocks Weather Forecast
- 5
- 16
Shower or two
- 9
- 17
Showers increasing
- 7
- 14
Shower or two
- 7
- 17
Possible shower
- 6
- 15
Shower or two
- 3
- 17
Partly cloudy
- 4
- 19
Mostly sunny
Today 18 Sep St Helens
Cloudy. Medium chance of showers, most likely in the evening. Light winds becoming north to northwesterly 25 to 35 km/h in the morning.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Westerly 15 to 25 knots turning north to northwesterly in the late morning and early afternoon. Winds reaching up to 30 knots in the late evening.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 2 metres during the afternoon.
- 1st Swell
- Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
- Weather
- Partly cloudy.
Old Man Rocks Temperature Statistics View More
September Temperature
St Helens Aerodrome (12km)
Lowest 5 September, 2025
1 °CAverage September
11.2 °CHighest 15 September, 2025
20.8 °C
Climate (2020–Present)
St Helens Aerodrome (12km)
Average Low 2020–2025
9.4 °CAverage 2020–2025
13.3 °CAverage High 2020–2025
18.2 °C