Hamelin Island Weather Forecast
- 22
- 32
Sunny
- 18
- 26
Partly cloudy
- 17
- 23
Possible shower
- 16
- 23
Becoming windy. Cloudy
- 14
- 24
Mostly sunny
- 16
- 22
Cloudy
- 14
- 22
Partly cloudy
Today 15 Dec South West
Mostly sunny. Slight chance of a shower in the east, near zero chance elsewhere. The chance of a thunderstorm in the afternoon, possibly severe with damaging winds and heavy rain which may lead to flash flooding in the east. Winds north to northeasterly 15 to 25 km/h turning northwesterly 25 to 40 km/h in the middle of the day then decreasing to 15 to 20 km/h in the evening. Daytime maximum temperatures 33 to 38.
Leeuwin Coastal Waters
Cape Naturaliste to Walpole- Wind
- North to northeasterly 10 to 15 knots turning west to northwesterly in the early afternoon. Winds reaching up to 20 knots offshore east of Cape Leeuwin in the early afternoon.
- Seas
- Around 1 metre.
- 1st Swell
- Southwesterly 1.5 metres.
- Weather
- Mostly sunny. The chance of a thunderstorm inshore in the early afternoon.
- Weather Situation
- A trough is deepening offshore from the west coast associated with a low pressure system, as a high pressure system strengthens in the Bight. The high will move east throughout today, allowing the trough to return to the west coast. The trough will move inland ahead of a cold front brushing the south coast by Tuesday. A new ridge will build across the southwest coast from Wednesday.
Hamelin Island Temperature Statistics View More
December Temperature
Cape Leeuwin (20km)
Lowest 4 December, 2025
16 °CAverage December
19.4 °CHighest 1 December, 2025
26 °C
Climate (2020–Present)
Cape Leeuwin (20km)
Average Low 2020–2025
14.9 °CAverage 2020–2025
17.5 °CAverage High 2020–2025
20.7 °C