Weather in Perth in May
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for May in Perth.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youPerth in May is pleasantly mild — daytime temperatures average 20.9°C, dropping to 12.2°C at night. The month is fairly wet (10 rainy days on average), with roughly 8.7 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Perth — every month compared. Once you know when to go, find your Perth packing list at 247PackingList.
Get ready for Perth in May
Search flights to Perth
Compare 100+ airlines for May — one search, best price.
Search Flights →Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
Check Price →What to pack for Perth in May
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Compare all months in Perth
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 30.2°C | 1.7mm | 10/10 |
| February | 30.4°C | 23.2mm | 10/10 |
| March | 28.4°C | 57.2mm | 10/10 |
| April | 24.4°C | 45.4mm | 10/10 |
| May | 20.9°C | 105.5mm | 9/10 |
| June | 18.0°C | 117.4mm | 9/10 |
| July | 17.6°C | 125.2mm | 9/10 |
| August | 17.8°C | 89.9mm | 10/10 |
| September | 19.5°C | 57.2mm | 10/10 |
| October | 21.6°C | 45.4mm | 10/10 |
| November | 24.4°C | 37.0mm | 10/10 |
| December | 28.7°C | 6.0mm | 10/10 |
Full month-by-month guide: best time to visit Perth →
For facts about Australia — currency, language and dialling code — see our Australia country guide at 247CountryInfo. Travellers also find it useful to keep a Perth travel guide to hand. Check clothing sizes in Australia before you shop.
Frequently Asked Questions
Is May a good time to visit Perth?
May rates 9/10 for visiting Perth — excellent time to visit. Expect average highs of 20.9°C, 105.5mm of rain across the month and about 8.7 hours of daily sunshine.
What is the temperature in Perth in May?
In May, Perth has average highs of 20.9°C (69.6°F) and average lows of 12.2°C (54.0°F).
Does it rain in Perth in May?
Some rain is likely. Perth averages 105.5mm across about 10 rainy days in May, so a light waterproof layer is worth packing.
What should I wear in Perth in May?
For Perth in May (20.9°C highs / 12.2°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts, compact travel umbrella.
More essentials for Perth in May
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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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.