Click on a day for an hourly weather forecast
The temperatures in Perth in May are comfortable with low of 14°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Perth during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Perth in May 2025.
If you’re planning to visit Perth in the near future, we highly recommend that you review the 14 day weather forecast for Perth before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 29° / 19° | 2 | 29 | 0 | 36 mm | Good | Perth in January |
| February | 30° / 20° | 1 | 27 | 0 | 27 mm | Good | Perth in February |
| March | 28° / 19° | 2 | 29 | 0 | 25 mm | Perfect | Perth in March |
| April | 25° / 17° | 2 | 28 | 0 | 42 mm | Perfect | Perth in April |
| May | 21° / 14° | 4 | 27 | 0 | 95 mm | Good | Perth in May |
| June | 18° / 12° | 6 | 24 | 0 | 129 mm | Good | Perth in June |
| July | 17° / 11° | 7 | 24 | 0 | 158 mm | Ok | Perth in July |
| August | 18° / 11° | 6 | 25 | 0 | 138 mm | Good | Perth in August |
| September | 19° / 11° | 4 | 26 | 0 | 82 mm | Good | Perth in September |
| October | 22° / 13° | 2 | 29 | 0 | 42 mm | Good | Perth in October |
| November | 25° / 15° | 2 | 28 | 0 | 44 mm | Perfect | Perth in November |
| December | 28° / 18° | 1 | 30 | 0 | 26 mm | Perfect | Perth in December |