Perth
Australia
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Perth, Australia

The central business district of Perth, Australia, with partially cloudy noon sky above
The central business district of Perth, Australia, with partially cloudy noon sky above
January is a tropical summer month in Perth, Australia, with average temperature ranging between min 18.2°C (64.8°F) and max 31.3°C (88.3°F). In January, the average high-temperature is relatively the same as in December - a hot 31.3°C (88.3°F). Weather in January »

The last month of the summer, February, is another hot month in Perth, Australia, with 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). With an average relative humidity of 38%, February is the least humid month in Perth. Weather in February »

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

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

The last month of the autumn, May, is also an agreeable month in Perth, Australia, with average temperature varying between 22.3°C (72.1°F) and 10.5°C (50.9°F). In May, the average high-temperature marginally drops, from a warm 25.9°C (78.6°F) in April, to an agreeable 22.3°C (72.1°F). Weather in May »

June, the first month of the winter, in Perth, is also an enjoyable month, with temperature in the range of an average low of 8.6°C (47.5°F) and an average high of 19.4°C (66.9°F). In Perth, the average high-temperature in June is essentially the same as in May - a comfortable 19.4°C (66.9°F). Weather in June »

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). 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 »

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

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

October in Perth, Australia, is a moderately hot spring month, with temperature in the range of an average low of 11.5°C (52.7°F) and an average high of 23.4°C (74.1°F). In Perth, the average high-temperature in October slightly increases, from a pleasant 20.4°C (68.7°F) in September, to a warm 23.4°C (74.1°F). Weather in October »

The last month of the spring, November, is another warm month in Perth, Australia, with average temperature fluctuating between 14.3°C (57.7°F) and 26.6°C (79.9°F). In Perth, the average high-temperature in November slightly increases, 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 »

The first month of the summer, December, is also a moderately hot 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 Perth, Australia, the average high-temperature is almost the same as in November - a still moderately hot 29.1°C (84.4°F). Weather in December »

How much 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 (28.6") of precipitation.

What is the month with the most sunshine in Perth?

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

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

Months with the highest UV index in Perth 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?

February is the least humid month, with an average relative humidity of 38%.

What is the driest month in Perth?

February is the month with the least rainfall. Rain falls for 2.1 days and accumulates 8.8mm (0.3") of precipitation.

When is the sea warmest in Perth?

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

What is the month with the shortest days in Perth?

The month with the shortest days is June, with an average of 10.1h of daylight.

What is the month with the least sunshine in Perth?

The month with the least sunshine in Perth, Australia, is June, with an average of 5.9h of sunshine.

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

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?

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?

The most humid month is July, with an average relative humidity of 57%.

What is the wettest month in Perth?

The month with the most rainfall in Perth 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, with an average of 14.2h of daylight.
Average temperature - Perth, Australia
Average rainfall - Perth, Australia

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

Average rainfall days - Perth, Australia

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

Average sea temperature - Perth, Australia

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

Average daylight / Average sunshine - Perth, Australia

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

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