Third Rocks Weather Forecast
- 11
- 14
Showers. Windy
- 9
- 16
Showers increasing
- 13
- 17
Showers. Becoming windy
- 7
- 16
Partly cloudy
- 7
- 17
Mostly sunny
- 7
- 17
Cloud clearing
- 8
- 19
Sunny
Today 8 Aug Perth
Cloudy. Very high chance of showers, becoming less likely in the late afternoon and evening. The chance of a thunderstorm in the morning. Possible small hail in the morning and afternoon. Winds southwesterly 25 to 40 km/h tending southerly 15 to 20 km/h in the evening then becoming light in the late evening.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- West to southwesterly 25 to 30 knots, reaching up to 35 knots early in the morning. Winds turning southerly 20 to 30 knots in the late afternoon.
- Seas
- 2.5 to 3 metres.
- 1st Swell
- West to southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres during the morning, then tending southwesterly 3 to 5 metres during the afternoon.
- Weather
- Cloudy. Near 100% chance of showers. The chance of a thunderstorm this morning. Possible small hail during the morning and afternoon.
- Caution
- Large and powerful surf conditions from this morning are expected to be hazardous for coastal activities such as swimming, surfing and rock fishing.
- Weather Situation
- A cold front has moved through the local waters, leaving a vigorous southwesterly flow in it's wake. Winds will ease tonight and on Sunday under the influence of a high pressure ridge to the north. Another cold front arrives on Monday.
Third Rocks Temperature Statistics View More
August Temperature
Garden Island (8km)
Lowest 2 August, 2026
9.2 °CAverage August
15.2 °CHighest 3 August, 2026
21.2 °C
Climate (2021–2026)
Garden Island (8km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
23.3 °C