Trefoil Island Weather Forecast
- 14
- 18
Cloudy
- 11
- 15
Partly cloudy
- 12
- 16
Shower
- 9
- 14
Shower
- 11
- 15
Shower
- 11
- 15
Partly cloudy
- 11
- 15
Partly cloudy
Today 4 Dec North West Coast
Partly cloudy. Slight chance of a shower in the far west in the morning and afternoon. Near zero chance of rain elsewhere. The chance of a thunderstorm in the west in the early morning. Winds northwesterly 15 to 25 km/h increasing to 25 to 35 km/h in the middle of the day then turning west to southwesterly 20 to 30 km/h during the afternoon and evening. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching the low to mid 20s.
Far Northwest Coastal Waters
Sandy Cape to Stanley including King Island- Wind
- Northwesterly 15 to 20 knots turning west to southwesterly in the afternoon. Winds reaching up to 25 knots east of King Island in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres east of King Island.
- 1st Swell
- West to southwesterly 1 to 2 metres, increasing to 2.5 to 3 metres south of King Island.
- Weather
- Partly cloudy. The chance of a thunderstorm south of King Island early this morning.
- Weather Situation
- A high pressure system over the Tasman Sea directs a northwesterly flow over the state, strengthening ahead of a weak cold front to cross Tasmania today. A weak ridge passes over the state on Friday, before another cold front is forecast to cross the state on Saturday. A westerly flow is then expected to develop over Tasmania on Sunday.
Trefoil Island Temperature Statistics View More
December Temperature
Marrawah (30km)
Lowest 1 December, 2025
7.3 °CAverage December
12 °CHighest 2 December, 2025
15 °C
Climate (2020–Present)
Marrawah (30km)
Average Low 2020–2025
9.7 °CAverage 2020–2025
12.6 °CAverage High 2020–2025
17 °C