Catherine Bay Weather Forecast
- 10
- 16
Showers. Wind easing
- 12
- 17
Showers
- 13
- 17
Showers. Possible storm
- 9
- 14
Showers. Wind easing
- 9
- 15
Cloudy
- 10
- 16
Shower or two
- 11
- 17
Showers. Windy
Today 21 Jul Lower West
Partly cloudy. High chance of showers near the coast, medium chance elsewhere. Patches of frost inland in the early morning. Winds southeast to southwesterly 15 to 20 km/h tending west to southwesterly in the morning then becoming light in the early afternoon. Overnight temperatures falling to between 2 and 5 with daytime temperatures reaching between 12 and 15.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Southerly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds tending east to southeasterly 10 to 15 knots in the early morning then tending south to southwesterly in the middle of the day.
- Seas
- 2 to 3 metres, decreasing to 1 metre during the morning.
- 1st Swell
- Southwesterly 2 to 3 metres.
- Weather
- Cloudy. 80% chance of showers. A thunderstorm likely in the early morning.
- Caution
- Large and powerful surf conditions in the morning are expected to be hazardous for coastal activities such as swimming, surfing and rock fishing.
Catherine Bay Temperature Statistics View More
July Temperature
Rottnest Island (1km)
Lowest 8 July, 2025
11.2 °CAverage July
15.7 °CHighest 6 July, 2025
21.7 °C
Climate (2020–Present)
Rottnest Island (1km)
Average Low 2020–2025
16.1 °CAverage 2020–2025
19 °CAverage High 2020–2025
22.8 °C