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The temperatures in Western Australia in September are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Western Australia during the month of September. 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 Western Australia in September 2025.
If you’re planning to visit Western Australia in the near future, we highly recommend that you review the 14 day weather forecast for Western Australia before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 29° / 19° | 2 | 29 | 0 | 36 mm | Good | Western Australia in January |
| February | 30° / 20° | 1 | 27 | 0 | 27 mm | Good | Western Australia in February |
| March | 28° / 19° | 2 | 29 | 0 | 25 mm | Perfect | Western Australia in March |
| April | 25° / 17° | 2 | 28 | 0 | 42 mm | Perfect | Western Australia in April |
| May | 21° / 14° | 4 | 27 | 0 | 95 mm | Good | Western Australia in May |
| June | 18° / 12° | 6 | 24 | 0 | 129 mm | Good | Western Australia in June |
| July | 17° / 11° | 7 | 24 | 0 | 158 mm | Ok | Western Australia in July |
| August | 18° / 11° | 6 | 25 | 0 | 138 mm | Good | Western Australia in August |
| September | 19° / 11° | 4 | 26 | 0 | 82 mm | Good | Western Australia in September |
| October | 22° / 13° | 2 | 29 | 0 | 42 mm | Good | Western Australia in October |
| November | 25° / 15° | 2 | 28 | 0 | 44 mm | Perfect | Western Australia in November |
| December | 28° / 18° | 1 | 30 | 0 | 26 mm | Perfect | Western Australia in December |
For a more accurate weather forecast please select a city