Hottest (avg)
#9 / 12
Perth in September
September weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 12h
What to expect
September marks a typically mild period of spring, where the weather is warming up. Daytime highs average 19°C / 66°F, dropping to 11°C / 51°F at night.
Skies are often changeable, and you should be prepared for regular rainfall (approx. 11 wet days).
September in context
How it compares to the rest of the year in Perth.
Wettest (avg)
#5 / 12
Daylight Hours
#7 / 12
Windiest (avg)
#7 / 12
Highest UV
#7 / 12
Most Humid
#4 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 11.9 hours
- UV index (max)
- 7
- Typical sun hours
- 06:14 – 18:08
Rain & Snow
- Total
-
- Rainy days
- 11
- Cloud cover
- 43%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 73%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is September a good time to visit Perth?
Typical September days in Perth reach highs of 19°C (66°F) with nights around 11°C (52°F). It usually feels mild by day and cool after dark. Overall, September sits in the middle of the Perth climate range.
What are temperatures like in September?
Daytime temperatures in September typically peak near 19°C (66°F), while nights drop to around 11°C (52°F). Expect mild afternoons and cool evenings.
How much does it rain in September?
Rainfall in September averages 55 mm (2.2 in) across roughly 11 days. Overall it is a quite rainy time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 06:14 and sunset near 18:08. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in September?
UV levels are often high (around 7). Regular sunscreen and a hat are recommended.
Is it windy in September?
In September, average wind speeds are around 17 km/h (11 mph), with gusts on the windiest days reaching about 65 km/h (40 mph). On the ground, it is it is a notably windy place, and strong gusts are fairly common.