August weather forecast
Perth, Australia

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The central business district of Perth, Australia
The central business district of Perth, Australia

Weather in August

August in Perth provides a glimpse of departure from the colder months, acting as a curtain-closer for winter. It holds onto the winter's vestiges, while introducing early signs of spring. As August advances, rainfall decreases, acting as a herald to sunnier days. The sea temperature sees a gradual increase, indicating a gradual return to warmer months. Magical sunsets and abundant wildflowers across the city start to set the mood for the upcoming seasonal change.

Temperature

During August, Perth records an average high-temperature of a still comfortable 19.1°C (66.4°F), marking a slight divergence from July's 18.4°C (65.1°F). In the month of August, an average of 8.3°C (46.9°F) marks the low-temperature.

Humidity

The average relative humidity in August is 54%.

Rainfall

In Perth, in August, during 15.7 rainfall days, 122mm (4.8") of precipitation is typically accumulated. Throughout the year, there are 108.4 rainfall days, and 725mm (28.54") of precipitation is accumulated.

Sea temperature

In August, the average sea temperature in Perth is 19.4°C (66.9°F).
Note: A surface water temperature of 19.4°C (66.9°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).

Daylight

The average length of the day in August in Perth is 10h and 59min.
On the first day of the month, sunrise is at 7:05 am and sunset at 5:40 pm. On the last day of August, sunrise is at 6:34 am and sunset at 5:59 pm AWST.

Sunshine

The average sunshine in August in Perth is 7.2h.

UV index

In August, the average daily maximum UV index in Perth is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A typical high UV index of 4 in August suggests the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

What are August temperatures in Perth?

In Perth, in August, the average high-temperature is 19.1°C (66.4°F), and the average low-temperature is 8.3°C (46.9°F).

What is the average humidity in August in Perth?

In August, the average relative humidity in Perth, Australia, is 54%.

How much does it rain in Perth in August?

In Perth, in August, during 15.7 rainfall days, 122mm (4.8") of precipitation is typically accumulated.

What is the sea temperature in August in Perth?

In Perth, Australia, in August, the average water temperature is 19.4°C (66.9°F). For swimming, a surface water temperature of 19.4°C (66.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Perth have in August?

In August, the average day length in Perth, Australia, is 10h and 59min.

When are sunrise and sunset in August in Perth?

In August, on the first day of the month, sunrise is at 7:05 am and sunset at 5:40 pm. On the last day of the month, in Perth, sunrise is at 6:34 am and sunset at 5:59 pm AWST.

How long on average sun shines in August in Perth?

In August, the average sunshine duration in Perth, Australia, is 7.2h.

How high is the UV index in August in Perth?

In Perth, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Perth, Australia

Average temperature in August - Perth, Australia
  • Average high temperature in August: 19.1°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 August: 8.3°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 August
Perth, Australia

Average humidity in August - Perth, Australia
  • Average humidity in August: 54%

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

Average rainfall in August
Perth, Australia

Average rainfall in August - Perth, Australia
  • Average rainfall in August: 122.4mm

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 August
Perth, Australia

Average rainfall days in August - Perth, Australia
  • Average rainfall days in August: 15.7 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 August
Perth, Australia

Average sea temperature in August - Perth, Australia
  • Average sea temperature in August: 19.4°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 August /
Average sunshine in August
Perth, Australia

Average daylight in August / Average sunshine in August - Perth, Australia
  • Average daylight in August: 11h and 0min

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 August: 7h and 1min

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).

Average UV index in August
Perth, Australia

Average UV index in August - Perth, Australia
  • Average UV index in August: 4

The months with the highest UV index are January and December (UV index 12).
The months with the lowest UV index are June and July (UV index 3).

Perth, Australia

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