Cathedral Rocks Weather Forecast

    • 16
    • 21

    Windy. Possible storm

    • 15
    • 19

    Showers easing. Very windy

    • 16
    • 19

    Showers

    • 14
    • 19

    Showers

    • 15
    • 19

    Shower or two

    • 15
    • 19

    Possible shower

    • 16
    • 21

    Shower or two

Today 31 May Lower West

Cloudy. Very high chance of showers. The chance of a thunderstorm, possibly severe with heavy rain which may lead to flash flooding in the early morning. Damaging winds likely, particularly near the coast and possibly destructive with thunderstorms in the early morning and in the evening. Winds north to northwesterly 25 to 35 km/h tending west to northwesterly 40 to 60 km/h early in the morning. Overnight temperatures falling to between 12 and 15 with daytime temperatures reaching between 17 and 21.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northwesterly 25 to 30 knots turning westerly 30 to 45 knots in the early morning. Winds reaching up to 50 knots in the evening.
Seas
2.5 to 4 metres, increasing to 4 to 6 metres during the afternoon.
1st Swell
Southwesterly around 1 metre, tending westerly 2 to 3 metres during the morning, then increasing to 3 to 5 metres during the afternoon.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm during this evening.
Caution
Large and powerful surf conditions this afternoon and evening are expected to be hazardous for coastal activities such as swimming, surfing and rock fishing. Tides are likely to rise above the normal high tide mark.
Weather Situation
A weak ridge is over Local Waters. A cold front moves through early Sunday morning, followed by a deep low pressure system moving near the South West Capes Sunday evening. Strong to gale force winds are expected, easing Monday morning. Another weaker cold front moves through on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cathedral Rocks Temperature Statistics View More

May Temperature

Swanbourne (30km)

  • Lowest 24 May, 2026

    6.1 °C

  • Average May

    16.1 °C

  • Highest 11 May, 2026

    26.9 °C

Climate (2021–Present)

Swanbourne (30km)

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  • Average Low 2021–2026

    14.5 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    24.3 °C
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