Flat Top Island Weather Forecast
- 10
- 12
Partly cloudy
- 12
- 16
Partly cloudy
- 13
- 14
Windy
- 9
- 10
Windy
- 9
- 12
Windy
- 11
- 12
Windy
- 12
- 13
Windy
Today 12 Sep Western
The chance of fog early this morning. Areas of morning frost. Mostly sunny afternoon. Winds northwest to northeasterly 15 to 20 km/h tending west to northwesterly in the middle of the day then turning north to northeasterly in the late afternoon. Daytime maximum temperatures between 15 and 19.
South West Coastal Waters
South East Cape to Low Rocky Point- Wind
- West to northwesterly 15 to 25 knots tending north to northwesterly 15 to 20 knots in the late morning and afternoon.
- Seas
- 1 to 2 metres, decreasing to 1 metre during the afternoon.
- 1st Swell
- Southwesterly 4 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system over southern Victoria is forecast to move over the Tasman Sea early today and continue to slowly move east. A weak trough is expected to cross Tasmania late Sunday. A cold front is then expected to approach the state from the west on Monday, directing the flow northwesterly before crossing Tasmania overnight into early Tuesday. A southwesterly flow will establish over the state in its wake.
Flat Top Island Temperature Statistics View More
September Temperature
Maatsuyker Island (9km)
Lowest 9 September, 2026
5.4 °CAverage September
10.1 °CHighest 1 September, 2026
15.8 °C
Climate (2021–2026)
Maatsuyker Island (9km)
Average Low 2021–2026
9.5 °CAverage 2021–2026
11.7 °CAverage High 2021–2026
14.3 °C