Postans Weather Forecast

Today 9 Sep
- 8
- 16
Partly cloudy
Wed 10 Sep
- 9
- 18
Mostly sunny
Thu 11 Sep
- 10
- 21
Sunny
Fri 12 Sep
- 13
- 22
Mostly sunny
Sat 13 Sep
- 16
- 20
Showers
Sun 14 Sep
- 15
- 18
Showers. Windy
Mon 15 Sep
- 12
- 17
Shower or two. Wind easing

Today 9 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Wed 10 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Thu 11 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Fri 12 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sat 13 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sun 14 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Mon 15 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm

Today 9 Sep Perth

Partly cloudy. Winds southeasterly 15 to 20 km/h becoming light in the late evening.

Postans Temperature Statistics View More

September Temperature

Garden Island (12km)

Lowest 21 July, 2025
5.7 °C
Average 2025
19 °C
Highest 20 January, 2025
41.2 °C
Lowest 28 August, 2025
6.8 °C
Average August
14.4 °C
Highest 13 August, 2025
23.7 °C
Lowest 1 September, 2025
7.5 °C
Average September
13.7 °C
Highest 1 September, 2025
19.7 °C

Climate (2020–Present)

Garden Island (12km)

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Average Low 2020–2025
15.2 °C
Average 2020–2025
18.9 °C
Average High 2020–2025
23.3 °C

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