Trefoil Island Weather Forecast
- 8
- 14
Shower
- 9
- 15
Shower
- 11
- 15
Windy
- 7
- 12
Shower
- 7
- 13
Shower
- 8
- 14
Shower
- 9
- 14
Shower
Today 11 Jul North West Coast
Partly cloudy. High chance of showers, becoming less likely this afternoon. Winds westerly 25 to 35 km/h turning southwesterly 25 to 40 km/h in the middle of the day then decreasing to 20 to 30 km/h in the evening. Daytime maximum temperatures between 9 and 14.
Far Northwest Coastal Waters
Sandy Cape to Stanley including King Island- Wind
- Westerly 25 to 30 knots turning southwesterly 20 to 30 knots in the middle of the day then decreasing to 15 to 25 knots in the evening.
- Seas
- 2 to 3 metres, decreasing to 1.5 to 2 metres later in the evening.
- 1st Swell
- West to southwesterly 2 to 3 metres, increasing to 4 metres south of King Island.
- Weather
- Partly cloudy. 50% chance of showers.
- Weather Situation
- Tasmania sits in a westerly flow with an embedded cold front approaching, forecast to brush the west and south of the state during today. A high pressure system over mainland Australia is expected to extend a ridge over Tasmania early tomorrow. A northwesterly stream is forecast to develop on Saturday afternoon, ahead of a stronger cold front to cross the state Sunday afternoon and evening.
Trefoil Island Temperature Statistics View More
July Temperature
Marrawah (30km)
Lowest 1 July, 2025
3.7 °CAverage July
9.1 °CHighest 6 July, 2025
16.2 °C
Climate (2020–Present)
Marrawah (30km)
Average Low 2020–2025
9.7 °CAverage 2020–2025
12.6 °CAverage High 2020–2025
17.1 °C