September weather forecastWest Perth, Australia

September

Weather in September

Sea temperature

September and October, with an average sea temperature of 19°C (66.2°F), are months with the coldest seawater in West Perth, Australia.
Note: Swimming is not enjoyable for most people in water that is 19°C (66.2°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.

Daylight

In September, the average length of the day in West Perth is 11h and 54min.
On the first day of the month, sunrise is at 6:32 am and sunset at 6:00 pm. On the last day of September, sunrise is at 5:55 am and sunset at 6:18 pm AWST.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

September and October, with an average sea temperature of 19°C (66.2°F), are months with the coldest seawater.

In West Perth, Australia, the average seawater temperature in September is 19°C (66.2°F). For most, swimming in 19°C (66.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

In West Perth, the average day length in September is 11h and 54min.

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 6:00 pm. On the last day of the month, in West Perth, sunrise is at 5:55 am and sunset at 6:18 pm AWST.

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Average sea temperature

Average daylight

Average sea temperature in September
West Perth, Australia

Average sea temperature in September: 19°C

The best month for swimming (with the highest average sea temperature) is March (23.4°C).
The coldest months (with the lowest average sea temperature) are September and October (19°C).

Average daylight in September
West Perth, Australia

Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).