Click on a day for an hourly weather forecast
The temperatures in Perth in August are usually low and can range between 11°C and 18°C.
You can expect about 3 to 8 days of rain in Perth during the month of August. 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 August 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 |