Climate and monthly weather forecast
Perth, Australia

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

Weather in January

January is a tropical summer month in Perth, Australia, with temperature in the range of an average low of 18.2°C (64.8°F) and an average high of 31.3°C (88.3°F). In January, the average high-temperature is practically the same as in December - a tropical 31.3°C (88.3°F). Weather in January »

Weather in February

The last month of the summer, February, is also a hot month in Perth, Australia, with an average temperature varying between 18.4°C (65.1°F) and 31.7°C (89.1°F). February is the warmest month, with an average high-temperature of 31.7°C (89.1°F) and an average low-temperature of 18.4°C (65.1°F). February is the least humid month, with an average relative humidity of 38%. Weather in February »

Weather in March

March, the first month of the autumn in Perth, is still a warm month, with temperature in the range of an average low of 16.6°C (61.9°F) and an average high of 29.6°C (85.3°F). In Perth, the average high-temperature in March is practically the same as in February - a warm 29.6°C (85.3°F). Weather in March »

Weather in April

April, the same as March, is a moderately hot autumn month in Perth, Australia, with an average temperature varying between 13.8°C (56.8°F) and 25.9°C (78.6°F). In Perth, Australia, the average high-temperature in April slightly decreases from 29.6°C (85.3°F) in March to a still warm 25.9°C (78.6°F). Weather in April »

Weather in May

May, the last month of the autumn in Perth, is also an agreeable month, with an average temperature ranging between min 10.5°C (50.9°F) and max 22.3°C (72.1°F). In May, the average high-temperature slightly decreases from a moderately hot 25.9°C (78.6°F) in April to an agreeable 22.3°C (72.1°F). Weather in May »

Weather in June

The first month of the winter, June, is also an enjoyable month in Perth, Australia, with an average temperature ranging between min 8.6°C (47.5°F) and max 19.4°C (66.9°F). In Perth, Australia, the average high-temperature in June is relatively the same as in May - an enjoyable 19.4°C (66.9°F). Weather in June »

Weather in July

July, the same as June, is another enjoyable winter month in Perth, Australia, with an average temperature fluctuating between 18.4°C (65.1°F) and 7.7°C (45.9°F). With an average high-temperature of 18.4°C (65.1°F) and an average low-temperature of 7.7°C (45.9°F), July is the coldest month. Weather in July »

Weather in August

The last month of the winter, August, is another comfortable month in Perth, Australia, with an average temperature varying between 19.1°C (66.4°F) and 8.3°C (46.9°F). In Perth, the average high-temperature in August is essentially the same as in July - a still enjoyable 19.1°C (66.4°F). Weather in August »

Weather in September

The first month of the spring, September, is a pleasant month in Perth, Australia, with temperature in the range of an average low of 9.6°C (49.3°F) and an average high of 20.4°C (68.7°F). In Perth, the average high-temperature in September is essentially the same as in August - an agreeable 20.4°C (68.7°F). Weather in September »

Weather in October

October is a warm spring month in Perth, Australia, with an average temperature fluctuating between 11.5°C (52.7°F) and 23.4°C (74.1°F). In October, the average high-temperature marginally rises from an agreeable 20.4°C (68.7°F) in September to a moderately hot 23.4°C (74.1°F). Weather in October »

Weather in November

The last month of the spring, November, is another warm month in Perth, Australia, with an average temperature ranging between max 26.6°C (79.9°F) and min 14.3°C (57.7°F). In November, the average high-temperature slightly increases from a moderately hot 23.4°C (74.1°F) in October to a still warm 26.6°C (79.9°F). Weather in November »

Weather in December

December, the first month of the summer in Perth, is also a moderately hot month, with an average temperature fluctuating between 16.4°C (61.5°F) and 29.1°C (84.4°F). In Perth, Australia, the average high-temperature in December is practically the same as in November - a still moderately hot 29.1°C (84.4°F). Weather in December »
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FAQ

How much does it rain in Perth?

Throughout the year, there are 108.4 rainfall days, and 725mm (28.54") of precipitation is accumulated.

What is the month with the most sunshine in Perth?

The months with the most sunshine in Perth are January and December, with an average of 11.5h of sunshine.

What are the months with the highest UV index in Perth?

The months with the highest UV index in Perth, Australia, are January and December, with an average maximum UV index of 12.

What is the warmest month in Perth?

February is the warmest month in Perth, Australia, with an average high-temperature of 31.7°C (89.1°F) and an average low-temperature of 18.4°C (65.1°F).

What is the least humid month in Perth?

With an average relative humidity of 38%, February is the least humid month in Perth, Australia.

What is the driest month in Perth?

The month with the least rainfall is February, when the rain falls for 2.1 days and typically collects 9mm (0.35") of precipitation.

When is the sea warmest in Perth?

March is the month with the warmest seawater, with an average sea temperature of 23.4°C (74.1°F).

What is the month with the shortest days in Perth?

June has the shortest days of the year in Perth, Australia, with an average of 10h and 6min of daylight.

What is the month with the least sunshine in Perth?

June has the least sunshine of the year, with an average of 5.9h of sunshine.

What is the month with the lowest UV index in Perth?

The months with the lowest UV index in Perth, Australia, are June and July, with an average maximum UV index of 3.

What is the coldest month in Perth?

July is the coldest month, with an average high-temperature of 18.4°C (65.1°F) and an average low-temperature of 7.7°C (45.9°F).

What is the most humid month in Perth?

With an average relative humidity of 57%, July is the most humid month.

What is the wettest month in Perth?

The month with the most rainfall in Perth, Australia, is July, when the rain falls for 16.9 days and typically aggregates up to 145mm (5.71") of precipitation.

What months are the sea coldest in Perth?

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

When are the longest days in Perth?

With an average of 14h and 12min of daylight, December has the longest days of the year in Perth, Australia.

Is there Daylight Saving Time (DST) in Perth?

Perth, Australia, does not observe Daylight Saving Time (DST). AWST timezone is used throughout the entire year.

Average temperature
Perth, Australia

Average temperature - Perth, Australia

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).

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).

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Average rainfall
Perth, Australia

Average rainfall - Perth, Australia

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

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Average rainfall days
Perth, Australia

Average rainfall days - Perth, Australia

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).

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Average sea temperature
Perth, Australia

Average sea temperature - Perth, Australia

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).

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Average daylight / Average sunshine
Perth, Australia

Average daylight / Average sunshine - Perth, Australia

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).

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).

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Average UV index
Perth, Australia

Average UV index - Perth, Australia

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).

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