Sandy Island Weather Forecast
- 14
- 30
Mostly sunny
- 20
- 33
Partly cloudy
- 17
- 24
Partly cloudy
- 15
- 21
Possible shower
- 14
- 21
Becoming windy. Cloudy
- 14
- 25
Windy. Mostly sunny
- 15
- 21
Shower or two. Windy
Today 14 Dec South West
Partly cloudy. Slight chance of a shower, most likely in the afternoon and early evening. The chance of a thunderstorm in the morning and afternoon, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the north in the afternoon and early evening. Winds east to northeasterly 20 to 30 km/h. Daytime maximum temperatures in the mid 30s.
Leeuwin Coastal Waters
Cape Naturaliste to Walpole- Wind
- Easterly 15 to 20 knots, reaching up to 30 knots east of Cape Leeuwin in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres offshore east of Cape Leeuwin.
- 1st Swell
- Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore east of Cape Leeuwin.
- Weather
- Mostly sunny. The chance of a thunderstorm in the morning and afternoon.
- Weather Situation
- A deepening trough near the west coast will move offshore today and a weak low pressure system will develop within the trough, as a high pressure system strengthens in the Bight. The high will move east on Monday, allowing the trough to return to the west coast. The trough will move inland ahead of a cold front brushing the south coast on Tuesday. A new ridge will build across the southwest coast from Wednesday.
Sandy Island Temperature Statistics View More
December Temperature
Shannon (42km)
Lowest 10 December, 2025
10 °CAverage December
17.4 °CHighest 1 December, 2025
33.7 °C
Climate (2020–Present)
Shannon (42km)
Average Low 2020–2025
10.3 °CAverage 2020–2025
14.6 °CAverage High 2020–2025
20.8 °C