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Weather in Perth for September 2025

Your guide to Perth weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Perth has been nearly identical to the historical average, with a temperature of 15.5 °C (showing only a slight deviation of -0.4 °C).

  • Expect cooler weather in the next days in Perth with the forecast suggesting a temperature of 13.6 °C, lower than the historical average.

  • In general, the average temperature in Perth at the beginning of September is 17.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Perth in September is notably wet, with an average of 11 rainy days, and a total of 62.7 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/7°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Perth Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
15°
2
Moderate rain
16°
3
Patchy rain possible
15°
4
Light rain
15°
5
Overcast
18°
6
Sunny
20°
7
Sunny
21°
8
Partly cloudy
19°
9
Patchy rain possible
16°
10
Patchy rain possible
14°
11
Patchy rain possible
13°
12
Patchy rain possible
13°
13
Patchy rain possible
13°
14
Patchy rain possible
14°
15
Patchy rain possible
16°
16
Patchy rain possible
17°
17
Patchy rain possible
14°
18
Patchy rain possible
17°
19
Moderate rain
15°
20
Moderate rain
15°
21
Patchy rain possible
12°
22
Partly cloudy
12°
23
Patchy rain possible
13°
24
Partly cloudy
15°
25
Partly cloudy
15°
26
Partly cloudy
13°
27
Patchy rain possible
11°
28
Patchy rain possible
11°
29
Patchy rain possible
11°
30
Light rain shower
10°

Temperatures trend during September in Perth

See the weather trend as well as the moving average line

September weather in Perth day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 4.8 mm 4
2 Sept. Moderate rain
Moderate rain
 16° /10° 9.9 mm 4
3 Sept. Patchy rain possible
Patchy rain possible
 15° /7° 7.1 mm 4
4 Sept. Light rain
Light rain
 15° /7° 1.2 mm 4
5 Sept. Overcast
Overcast
 18° /8° 0 mm 4
6 Sept. Sunny
Sunny
 20° /10° 0 mm 5
7 Sept. Sunny
Sunny
 21° /11° 3.5 mm 5
8 Sept. Partly cloudy
Partly cloudy
 19° /10° 1.2 mm 5
9 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 2.1 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 14° /7° 6.8 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 0.5 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 0.5 mm 3
13 Sept. Patchy rain possible
Patchy rain possible
 13° /3° 3.4 mm 3
14 Sept. Patchy rain possible
Patchy rain possible
 14° /5° 10.7 mm 3
15 Sept. Patchy rain possible
Patchy rain possible
 16° /7° 0.1 mm 4
16 Sept. Patchy rain possible
Patchy rain possible
 17° /8° 1.8 mm 0.7
17 Sept. Patchy rain possible
Patchy rain possible
 14° /9° 1.9 mm 0.1
18 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 0.4 mm 0.7
19 Sept. Moderate rain
Moderate rain
 15° /12° 9.4 mm 0.4
20 Sept. Moderate rain
Moderate rain
 15° /11° 19 mm 0.3
21 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 2.6 mm 2
22 Sept. Partly cloudy
Partly cloudy
 12° /5° 0.1 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 0.2 mm 2
24 Sept. Partly cloudy
Partly cloudy
 15° /5° 0 mm 3
25 Sept. Partly cloudy
Partly cloudy
 15° /5° 0 mm 3
26 Sept. Partly cloudy
Partly cloudy
 13° /7° 0.1 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 11° /8° 0.2 mm 2
28 Sept. Patchy rain possible
Patchy rain possible
 11° /8° 0.5 mm 2
29 Sept. Patchy rain possible
Patchy rain possible
 11° /8° 0.8 mm 2
30 Sept. Light rain shower
Light rain shower
 10° /7° 1.5 mm 3
Next
Important Notice
Our weather forecast for Perth in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Perth forecast closer to your planned date for the most up-to-date weather information.
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Perth in September - FAQ

What are the expected maximum and minimum temperatures in Perth during September?
During September, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Perth during September?
Moderate rainfall is anticipated in Perth during September, with a total of 62.7 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Perth during September?
The average wind speed in Perth during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Perth

Explore the daily rainfall trends and prepare for Perths September weather 💧

UV exposure in Perth during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Perth?

Get accurate weather forecasts for Perth, located at latitude 56.395 and longitude -3.431. Stay updated with localized weather information tailored for Perth.

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