Climate in Perth — Annual Weather Overview
Perth has a mediterranean climate — hot dry summers and mild wet winters. The hottest month is February (average high 30.4°C) and the coolest is July (17.6°C). There is a noticeable seasonal temperature shift of 12.8°C between February and July. Annual rainfall totals around 711mm. July is the wettest month at 125.2mm, while January averages just 1.7mm. Average daily sunshine is 10.8 hours.
**Spring (September, October, November):** average highs 21.8°C, 140mm rain. **Summer (December, January, February):** average highs 29.8°C, 31mm rain. **Autumn (March, April, May):** average highs 24.6°C, 208mm rain. **Winter (June, July, August):** average highs 17.8°C, 332mm rain.
Perth — Monthly Temperatures
Perth — Monthly Rainfall
✅ Best months to visit
All year
ℹ️ No months to avoid
Weather in Perth stays reasonable all year.
Perth weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 30.2°C | 19.2°C | 1.7mm | 13.1h | 0 | 10/10 |
| February | 30.4°C | 19.3°C | 23.2mm | 12.3h | 2 | 10/10 |
| March | 28.4°C | 18.3°C | 57.2mm | 10.8h | 6 | 10/10 |
| April | 24.4°C | 14.8°C | 45.4mm | 9.8h | 7 | 10/10 |
| May | 20.9°C | 12.2°C | 105.5mm | 8.7h | 10 | 9/10 |
| June | 18.0°C | 10.5°C | 117.4mm | 8.4h | 14 | 9/10 |
| July | 17.6°C | 10.8°C | 125.2mm | 8.2h | 16 | 9/10 |
| August | 17.8°C | 9.4°C | 89.9mm | 9.6h | 10 | 10/10 |
| September | 19.5°C | 11.3°C | 57.2mm | 10.6h | 9 | 10/10 |
| October | 21.6°C | 12.1°C | 45.4mm | 11.3h | 6 | 10/10 |
| November | 24.4°C | 14.7°C | 37.0mm | 12.7h | 4 | 10/10 |
| December | 28.7°C | 17.9°C | 6.0mm | 13.5h | 1 | 10/10 |
For the full verdict on when to go, see the best time to visit Perth. Seasonal breakdowns: spring, summer, autumn and winter.
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Frequently Asked Questions
What type of climate does Perth have?
Perth has a mediterranean climate — hot dry summers and mild wet winters. Average highs range from 17.6°C in July to 30.4°C in February.
What is the hottest month in Perth?
February is the hottest month in Perth, with average highs of 30.4°C and lows of 19.3°C.
What is the coldest month in Perth?
July is the coolest month, with average highs of 17.6°C and lows of 9.4°C.
What is the wettest month in Perth?
July is the wettest month, averaging 125.2mm of rainfall over around 16 rainy days.
How much rain does Perth get per year?
Perth receives around 711mm of rain per year. The driest month is January (1.7mm).
When is the best time to visit Perth?
The best time to visit Perth is All year. See the full month-by-month guide →
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Trip essentials for Perth
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More Perth travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.