South West Twin Island Weather Forecast
- 18
- 27
Partly cloudy
- 17
- 29
Sunny
- 18
- 29
Mostly sunny
- 19
- 28
Partly cloudy
- 18
- 29
Mostly sunny
- 16
- 30
Mostly sunny
- 14
- 29
Sunny
Today 18 Aug Pilbara
Partly cloudy. Light winds.
Pilbara West Coastal Waters
Cape Preston to North West Cape- Wind
- Variable below 10 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 1 metre inshore, increasing to 1.5 to 2.5 metres offshore.
- Weather
- Partly cloudy.
- Weather Situation
- A ridge in the north has dissipated as a weak trough becomes established from the eastern Kimberley into the North Interior. A ridge over southern WA later in the week will push the trough to the Kimberley on Friday. Meanwhile, a patchy cloud band is developing across western Pilbara waters.
South West Twin Island Temperature Statistics View More
August Temperature
Onslow Airport (19km)
Lowest 10 August, 2026
9.5 °CAverage August
20.9 °CHighest 1 August, 2026
30.4 °C
Climate (2021–2026)
Onslow Airport (19km)
Average Low 2021–2026
20.4 °CAverage 2021–2026
25.8 °CAverage High 2021–2026
32.8 °C