Perth Weather in September
In September, Perth averages a high of 20°C (68°F) and a low of 11°C (52°F), based on 21 years of historical weather data from PERTH REGIONAL OFFICE.
20°C
Average high
68°F
11°C
Average low
52°F
32°C
Record high
90°F · 1988
4°C
Record low
39°F · 1977
What to Expect in Perth in September
Typical September days in Perth reach 20°C (68°F) during the afternoon and cool to around 11°C (52°F) overnight. On average, measurable rain falls on about 46% of days this month. Over the past 21 years, September temperatures in Perth have ranged from a record high of 32°C (1988) down to a record low of 4°C (1977).
For a day-by-day look or other months, see the full Perth weather history.