South West Twin Island Weather Forecast
- 18
- 32
Sunny
- 17
- 31
Sunny
- 18
- 30
Mostly sunny
- 18
- 32
Sunny
- 19
- 34
Sunny
- 22
- 34
Mostly sunny
- 20
- 32
Sunny
Today 18 Sep Pilbara
Sunny. Winds southeast to southwesterly 20 to 30 km/h tending northwesterly 15 to 25 km/h in the morning. Daytime maximum temperatures in the low to mid 30s.
Pilbara West Coastal Waters
Cape Preston to North West Cape- Wind
- Southerly 10 to 15 knots, reaching up to 20 knots offshore west of Onslow during the morning. Winds shifting northwesterly during the afternoon and evening.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre around midday.
- 1st Swell
- West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres about offshore western waters.
- Weather
- Sunny.
- Weather Situation
- Generally light winds, apart from the far western Pilbara waters where winds are fresh southerly until Saturday. A ridge developing during today will increase southeasterly winds through the remainder of the Pilbara and southwest Kimberley waters over the weekend into next week.
South West Twin Island Temperature Statistics View More
September Temperature
Onslow Airport (19km)
Lowest 7 September, 2025
14.1 °CAverage September
21.9 °CHighest 13 September, 2025
32.4 °C
Climate (2020–Present)
Onslow Airport (19km)
Average Low 2020–2025
20.5 °CAverage 2020–2025
25.7 °CAverage High 2020–2025
32.8 °C