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Perth Weather in September, Australia

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  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    14°C
    58°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    19°C
    66°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    10°C
    50°F
  • What is Average Day Temperature?
    The average temperature recorded between sunrise and sunset

    Day Temperature

    16°C
    61°F
  • What is Average Night Temperature?
    The average temperature recorded between sunset and sunrise

    Night Temperature

    13°C
    56°F
  • What is Average Sea Temperature?
    Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface

    Sea Temperature

    18°C
    64°F
  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    7 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    15 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    80 mm

September, 2025

Sun
Mon
1 Avg 13º 55º
Tue
2 Avg 14º 57º
Wed
3 Avg 14º 57º
Thu
4 Avg 13º 55º
Fri
5 Avg 14º 57º
Sat
6 Avg 13º 55º
7 Avg 13º 55º
8 Avg 13º 55º
9 Avg 14º 57º
10 Avg 14º 57º
11 Avg 14º 57º
12 Avg 14º 57º
13 Avg 14º 57º
14 Avg 14º 57º
15 Avg 14º 57º
16 Avg 14º 57º
17 Avg 15º 59º
18 Avg 14º 57º
19 Avg 15º 59º
20 Avg 16º 61º
21 Avg 15º 59º
22 Avg 13º 55º
23 Avg 14º 57º
24 Avg 15º 59º
25 Avg 14º 57º
26 Avg 15º 59º
27 Avg 15º 59º
28 Avg 15º 59º
29 Avg 15º 59º
30 Avg 15º 59º
Forecast
Avg Historical Daily Average
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Perth Events September

Festival


1 Sep 2026
30 Sep 2026

Kings Park Festival – Kings Park 🎡

The Kings Park Festival celebrates Western Australia’s wildflower season with outdoor exhibitions, guided walks, native plant displays and conservation workshops. Visitors attend talks by botanists, photography sessions and children’s nature programmes. Flower trails highlight regional species across the Botanic Garden.


Agricultural Fair


26 Sep 2026
30 Sep 2026

Perth Royal Show – Claremont Showground 🗓

The Royal Show presents agricultural competitions, livestock exhibits, entertainment arenas, sideshow rides and food pavilions. Visitors watch equestrian events, woodchopping, demonstrations and fireworks. Showbags, market stalls and interactive farm zones attract families throughout the week-long event.


Music Festival


27 Sep 2026
28 Sep 2026

Perth Guitar Festival – Perth Cultural Centre 🎙

The festival hosts performances by classical, acoustic and contemporary guitarists across stages in the Cultural Centre and surrounding laneways. Workshops, masterclasses and exhibitions accompany scheduled concerts. Visitors move between indoor halls and outdoor stages throughout both event days.