Slope Island Weather Forecast
- 21
- 27
Clear
- 21
- 25
Sunny
- 20
- 24
Mostly sunny
- 20
- 24
Sunny
- 21
- 26
Sunny
- 21
- 24
Becoming windy. Mostly sunny
- 21
- 25
Becoming windy. Sunny
Today 3 Dec Gascoyne
Mostly clear. Winds southwesterly 15 to 25 km/h.
Gascoyne Coastal Waters
Cape Cuvier to Kalbarri- Wind
- Southerly 15 to 20 knots, reaching up to 25 knots offshore south of Denham in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres south of Denham.
- 1st Swell
- Southwesterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
- Weather
- Clear.
- Weather Situation
- A high pressure system in the Indian Ocean extends a ridge over southern coastal waters, and brings a south to southeasterly flow to much of the western coast. A weak front will brush the south coast on Friday, before the high pressure system starts to move eastwards through the Bight over the weekend, a south to southeasterly flow remaining about western coastal waters throughout.
Slope Island Temperature Statistics View More
December Temperature
Shark Bay Airport (27km)
Lowest 2 December, 2025
20.7 °CAverage December
26.8 °CHighest 1 December, 2025
38.9 °C
Climate (2020–Present)
Shark Bay Airport (27km)
Average Low 2020–2025
16.8 °CAverage 2020–2025
22.3 °CAverage High 2020–2025
29.6 °C