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Australia weather

Weather in Adelaide for September 2026

Your guide to Adelaide weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Adelaide is slightly cooler than the historical average by 0.6 °C.

  • The forecast for the upcoming days in Adelaide predicts a temperature of 17.5 °C, which is slightly above the historical average.

  • In general, the average temperature in Adelaide at the beginning of September is 16 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Adelaide in September is notably wet, with an average of 15 rainy days, and a total of 50.6 mm of precipitation.

    • More

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

Average dry days
15
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/9°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Adelaide Weather September

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

Temperatures trend during September in Adelaide

See the weather trend as well as the moving average line

September weather in Adelaide day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 16° /9° 0.3 mm 4
2 Sept. Cloudy
Cloudy
 16° /9° 0.1 mm 5
3 Sept. Sunny
Sunny
 15° /8° 0.7 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 1.9 mm 4
5 Sept. Overcast
Overcast
 15° /9° 1 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 1.8 mm 5
7 Sept. Cloudy
Cloudy
 16° /9° 8.2 mm 5
8 Sept. Light rain shower
Light rain shower
 15° /8° 4.8 mm 4
9 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 3.9 mm 4
10 Sept. Sunny
Sunny
 16° /7° 0.9 mm 5
11 Sept. Overcast
Overcast
 15° /7° 0.5 mm 4
12 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 1.2 mm 4
13 Sept. Overcast
Overcast
 17° /8° 1 mm 5
14 Sept. Sunny
Sunny
 17° /9° 1.3 mm 5
15 Sept. Partly cloudy
Partly cloudy
 16° /7° 2.6 mm 5
16 Sept. Sunny
Sunny
 15° /8° 0 mm 7
17 Sept. Sunny
Sunny
 13° /7° 0 mm 7.4
18 Sept. Sunny
Sunny
 18° /10° 0 mm 6
19 Sept. Sunny
Sunny
 21° /13° 0 mm 7
20 Sept. Sunny
Sunny
 18° /13° 0 mm 6
21 Sept. Sunny
Sunny
 15° /10° 0 mm 5
22 Sept. Sunny
Sunny
 16° /8° 0 mm 6
23 Sept. Overcast
Overcast
 18° /14° 5.7 mm 5
24 Sept. Sunny
Sunny
 20° /14° 2.4 mm 6
25 Sept. Sunny
Sunny
 17° /14° 0 mm 6
26 Sept. Overcast
Overcast
 27° /16° 0 mm 8
27 Sept. Overcast
Overcast
 18° /14° 1.7 mm 5
28 Sept. Sunny
Sunny
 15° /10° 0.5 mm 6
29 Sept. Sunny
Sunny
 14° /8° 0 mm 5
30 Sept. Moderate rain at times
Moderate rain at times
 17° /10° 2.2 mm 5
Next
Important Notice
Our weather forecast for Adelaide 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 Adelaide forecast closer to your planned date for the most up-to-date weather information.
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Adelaide in September - FAQ

What are the expected maximum and minimum temperatures in Adelaide during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Adelaide during September?
Moderate rainfall is anticipated in Adelaide during September, with a total of 50.6 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Adelaide during September?
The average wind speed in Adelaide during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Adelaide

Explore the daily rainfall trends and prepare for Adelaides September weather 💧
Typically, Adelaide has 15 rainy days in September with a total of 50.6 mm of rainfall.

UV exposure in Adelaide during September

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

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Get accurate weather forecasts for Adelaide, located at latitude -34.929 and longitude 138.599. Stay updated with localized weather information tailored for Adelaide.

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