Planning a trip to Perth in September? You are in luck! The weather is generally good, with an average maximum temperature of +66°F and approximately 10 sunny days. Just be prepared for some rain, as there are usually around 6 rainy days and 62 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+66°F
Avg. max. temperature
+36°F
Min.
+93°F
Max.
62 mm
Total precipitation
71%
Avg. humidity
3 m/s
Avg. wind
10 ☀️
Sunny Days
14 ⛅️
Cloudy
6 🌦
Rainy
Our opinion: Perth has good weather in September.
Average temperature in Perth in September
Here are the expected maximum, average and minimum temperatures in Perth for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +82°F during the day to a minimum of +41°F during the night, the temperature in September averages around +70°F.
The average maximum temperature goes up 26% by the end of the month, compared with the beginning of the month, from +72°F to +82°F.
Is Perth warm or cold in September?
Perth is typically mild in September.
Maximum temperatures go up compared to the previous month from +64°F to +66°F. The minimum temperature also goes up from +48°F to +50°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Perth:
Climate in Perth in September
Perth weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+64°F
+66°F
+72°F
Min. temperature
+34°F
+36°F
+37°F
Max. temperature
+84°F
+93°F
+97°F
Rainfall
103 mm
62 mm
33 mm
Wind
3 m/s
3 m/s
4 m/s
Humidity
73%
71%
65%
Air pressure
1018 HPa
1017 HPa
1016 HPa
Sunny days
10
10
14
Cloudy days
12
14
14
Rainy days
9
6
3
Snowy days
0
0
0
September weather is still as good as in August.It’s getting warmer as September arrives. The average maximum temperature goes up from +64°F to +66°F during the day.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 103 mm to 62 mm.It feels drier, as humidity decreases from 73% to 71%.The average wind speed doesn’t change much during September, staying around 3 m/s.The amount of sunny days stay about the same, averaging 10 sunny days during the month.
October brings much the same weather, it remains good.
Wind speed in Perth in September based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Perth is gradually decreasing during September, going from 6 m/s to 5 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Perth based on historical data.
Last Year
Historical Data
Typically, there is a 47% chance of rain on an average day in September, with total rainfall of approximately 103 mm. The maximum amount of rainfall per day is around 23 mm, which is considered light rain.September is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Perth wettest month is July, where a typical day has a 32% chance of precipitation and 121 mm of rainfall per day. December, on the other hand, is the driest month with a mere 3% chance of precipitation and 10 mm of rainfall per day.
How was the weather last September in Perth?
This is the weather in Perth in September 2023:
1 September
☀️
+71°F
2 September
☀️
+68°F
3 September
☁️
+60°F
4 September
☁️
+69°F
5 September
🌧️
+65°F
6 September
☀️
+62°F
7 September
☁️
+66°F
8 September
☁️
+66°F
9 September
☀️
+71°F
10 September
☀️
+72°F
11 September
☀️
+74°F
12 September
🌧️
+74°F
13 September
☁️
+63°F
14 September
☁️
+64°F
15 September
☁️
+65°F
16 September
☁️
+68°F
17 September
☁️
+68°F
18 September
☁️
+68°F
19 September
☁️
+63°F
20 September
☀️
+66°F
21 September
☁️
+69°F
22 September
☀️
+66°F
23 September
☁️
+67°F
24 September
☀️
+64°F
25 September
☀️
+66°F
26 September
☀️
+72°F
27 September
☀️
+77°F
28 September
☀️
+81°F
29 September
☀️
+82°F
30 September
☀️
+82°F
In September 2023 Perth had 15 sunny days, 13 cloudy days, and 2 rainy days. The average maximum temperature was +70°F, with an absolute maximum of +82°F and a minimum of +59°F. The average humidity was 71%, with a maximum of 98% and a minimum of 21%. The average wind speed was 4 m/s, with a maximum of 14 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Perth climate has changed over the last 43 years.
The climate in Perth in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1992 (+63°F) and the highest in 2019 (+75°F). The driest year was 2010 with only 13 mm of rainfall, and the wettest year was 2012 with 297 mm.
FAQ
Frequently asked questions about the weather in Perth in September:
Is September a good time to visit Perth?
September is a really good time to go to Perth. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Perth.
Can you sunbathe in Perth in September?
September has mild temperatures in Perth. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Is Perth rainy in September?
Perth is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Perth in September?
The amount of sunny days in Perth during September varies; prepare for a mix of clouds and sun.
Other cities in Australia
Check out the weather for other cities in Australia.
For this page, we’ve looked at the typical weather in Perth, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.