October weather forecastPerth, Australia

The central business district of Perth, Australia

October

Weather in October

In Perth, October weather offers warmth and serenity, characteristic of spring. Warmer temperatures from 23.4°C (74.1°F) accompany the city residents as they enjoy golden sunlight during the day. October sees a sharp reduction in rainfall, paving the way for sunnier days and cooler nights. The near perfect weather mirrors the city's burgeoning activity as residents and visitors alike flock to outdoor events and festivities. Perth's beaches and parks find their popularity soaring as people respond to nature's grand invitation.

Temperature

October's arrival in Perth signals a modest temperature shift, moving from a pleasant 20.4°C (68.7°F) in September to a warm 23.4°C (74.1°F). In the month of October, the average temperature in Perth dips to a fresh 11.5°C (52.7°F) during the night.

Humidity

In Perth, the average relative humidity in October is 46%.

Rainfall

In Perth, during October, the rain falls for 8.7 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, in Perth, there are 108.4 rainfall days, and 725mm (28.54") of precipitation is accumulated.

Sea temperature

The months with the coldest seawater are September and October, with an average sea temperature of 19°C (66.2°F).
Note: The enjoyment of swimming decreases for most when the surface water temperature is 19°C (66.2°F). Breathing control becomes increasingly challenging as temperatures descend below 21°C (69.8°F).

Daylight

In Perth, Australia, the average length of the day in October is 12h and 53min.
On the first day of October, sunrise is at 5:53 am and sunset at 6:18 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 6:40 pm AWST.

Sunshine

In Perth, the average sunshine in October is 9.6h.

UV index

In October, the average daily maximum UV index in Perth is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 8 in October translates into the following instructions:
Immediate precautions are necessary; otherwise, skin and eyes might get damaged quickly. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

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

Frequently asked questions

In October, the average high-temperature and low-temperature in Perth, Australia, are 23.4°C (74.1°F) and 11.5°C (52.7°F) respectively.

In Perth, Australia, the average relative humidity in October is 46%.

In Perth, in October, it is raining for 8.7 days, with typically 39mm (1.54") of accumulated precipitation.

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

In Perth, Australia, the average seawater temperature in October is 19°C (66.2°F). Swimming in 19°C (66.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

In October, the average day length in Perth, Australia, is 12h and 53min.

In October, on the first day of the month, sunrise is at 5:53 am and sunset at 6:18 pm. On the last day of the month, in Perth, Australia, sunrise is at 5:19 am and sunset at 6:40 pm AWST.

In October, the average sunshine duration in Perth, Australia, is 9.6h.

In October, the average daily maximum UV index in Perth, Australia, is 8. A UV Index reading of 8 to 10 represents a very high health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S October N D

Sep

October

Nov

Average high temperature

20.4°C

23.4°C

26.6°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

15.3

8.7

6.3

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in October
Perth, Australia

Average high temperature in October: 23.4°C

The warmest month (with the highest average high temperature) is February (31.7°C).
The month with the lowest average high temperature is July (18.4°C).

Average low temperature in October: 11.5°C

The month with the highest average low temperature is February (18.4°C).
The coldest month (with the lowest average low temperature) is July (7.7°C).

Average humidity in October
Perth, Australia

Average humidity in October: 46%

The month with the highest relative humidity is July (57%).
The month with the lowest relative humidity is February (38%).

Average rainfall in October
Perth, Australia

Average rainfall in October: 38.6mm

The wettest month (with the highest rainfall) is July (144.7mm).
The driest month (with the least rainfall) is February (8.8mm).

Average rainfall days in October
Perth, Australia

Average rainfall days in October: 8.7 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is February (2.1 days).

Average sea temperature in October
Perth, Australia

Average sea temperature in October: 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 October /
Average sunshine in October
Perth, Australia

Average daylight in October: 12h 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).

Average sunshine in October: 9h and 36min

The months with the most sunshine are January and December (Average sunshine: 11h and 30min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).