Monthly weather forecast and climate
Perth, Australia

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

Weather in January

January in Perth, Australia, is a tropical summer month, with average temperature varying between 31.3°C (88.3°F) and 18.2°C (64.8°F). In January, the average high-temperature is almost the same as in December - a hot 31.3°C (88.3°F). Weather in January »

Weather in February

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

Weather in March

The first month of the autumn, March, is still a warm month in Perth, Australia, with average temperature varying between 16.6°C (61.9°F) and 29.6°C (85.3°F). In March, the average high-temperature is relatively the same as in February - a moderately hot 29.6°C (85.3°F). Weather in March »

Weather in April

April, like March, in Perth, Australia, is a moderately hot autumn month, with average temperature varying between 25.9°C (78.6°F) and 13.8°C (56.8°F). In Perth, the average high-temperature marginally drops, from a moderately hot 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 another pleasant month, with temperature in the range of an average high of 22.3°C (72.1°F) and an average low of 10.5°C (50.9°F). In May, the average high-temperature slightly decreases, from a warm 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 still a comfortable month in Perth, Australia, with average temperature varying between 19.4°C (66.9°F) and 8.6°C (47.5°F). In Perth, the average high-temperature in June is relatively the same as in May - a comfortable 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 average temperature fluctuating between 7.7°C (45.9°F) and 18.4°C (65.1°F). The coldest month is July, with an average high-temperature of 18.4°C (65.1°F) and an average low-temperature of 7.7°C (45.9°F). Weather in July »

Weather in August

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

Weather in September

September, the first month of the spring, in Perth, is an agreeable month, with average temperature varying between 9.6°C (49.3°F) and 20.4°C (68.7°F). In Perth, the average high-temperature is practically the same as in August - an agreeable 20.4°C (68.7°F). Weather in September »

Weather in October

October in Perth, Australia, is a warm spring month, with average temperature fluctuating between 11.5°C (52.7°F) and 23.4°C (74.1°F). In Perth, the average high-temperature in October 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 also a moderately hot month in Perth, Australia, with average temperature varying between 14.3°C (57.7°F) and 26.6°C (79.9°F). In Perth, Australia, the average high-temperature marginally rises, from a warm 23.4°C (74.1°F) in October, to a still moderately hot 26.6°C (79.9°F). Weather in November »

Weather in December

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

How many days does it rain in Perth?

In Perth, Australia, during the entire year, the rain falls for 108.4 days and collects up to 725.4mm (28.56") of precipitation.

What are the months with the most sunshine in Perth?

Months with the most sunshine are January and December, with an average of 11.5h of sunshine.

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

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

What is the warmest month in Perth?

The warmest month is February, 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 in Perth, Australia, is February when the rain falls for 2.1 days and typically collects 8.8mm (0.35") of precipitation.

What month 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, with an average of 10.1h of daylight.

What is the month with the least sunshine in Perth?

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

When is the lowest UV index in Perth?

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

What is the coldest month in Perth?

The coldest month in Perth is July, 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?

July is the most humid month in Perth, Australia, with an average relative humidity of 57%.

What is the wettest month in Perth?

The month with the most rainfall is July when the rain falls for 16.9 days and typically aggregates up to 144.7mm (5.7") of precipitation.

What are the months with the coldest sea water 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?

December has the longest days of the year in Perth, with an average of 14.2h of daylight.

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: 14.2h).
The month with the shortest days is June (Average daylight: 10.1h).

Months with the most sunshine are January and December (Average sunshine: 11.5h).
The month with the least sunshine is June (Average sunshine: 5.9h).

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