Perth, Western Australia Weather by Month and Climate Averages

How much rain does Perth get?

Perth gets 723 mm of precipitation in an average year, spread over about 108 days with measurable rain. That is more rainy days than 75% of Australia.

July is the wettest month, with 142 mm. December is the driest, with 10 mm. July has the most rainy days, about 17.

The longest dry spell in the last five years lasted 51 days, to March 2, 2023.

Perth weather by month

Perth weather in January

In January, Perth averages a high of 31°C and a low of 18°C. It gets 19 mm of precipitation over about 3 rainy days. The sun is out about 84% of daylight hours. The January record high is 44°C (2015) and the record low is 9°C (2001).

Perth weather in February

In February, Perth averages a high of 32°C and a low of 18°C. It gets 13 mm of precipitation over about 2 rainy days. The sun is out about 73% of daylight hours. The February record high is 44°C (1997) and the record low is 10°C (2016).

Perth weather in March

In March, Perth averages a high of 29°C and a low of 17°C. It gets 20 mm of precipitation over about 5 rainy days. The sun is out about 64% of daylight hours. The March record high is 42°C (2007) and the record low is 6°C (2007).

Perth weather in April

In April, Perth averages a high of 26°C and a low of 14°C. It gets 35 mm of precipitation over about 7 rainy days. The sun is out about 60% of daylight hours. The April record high is 39°C (2020) and the record low is 4°C (2000). April is one of the most comfortable months to visit.

Perth weather in May

In May, Perth averages a high of 22°C and a low of 11°C. It gets 88 mm of precipitation over about 11 rainy days. The sun is out about 54% of daylight hours. The May record high is 34°C (2002) and the record low is 1°C (2012). May is one of the most comfortable months to visit.

Perth weather in June

In June, Perth averages a high of 19°C and a low of 9°C. It gets 127 mm of precipitation over about 15 rainy days. The sun is out about 51% of daylight hours. The June record high is 26°C (2009) and the record low is -1°C (2006). June is one of the most comfortable months to visit.

Perth weather in July

In July, Perth averages a high of 18°C and a low of 8°C. It gets 142 mm of precipitation over about 17 rainy days. The sun is out about 49% of daylight hours. The July record high is 26°C (2026) and the record low is 0°C (2010).

Perth weather in August

In August, Perth averages a high of 19°C and a low of 8°C. It gets 124 mm of precipitation over about 16 rainy days. The sun is out about 51% of daylight hours. The August record high is 30°C (2019) and the record low is 1°C (2000). August is one of the most comfortable months to visit.

Perth weather in September

In September, Perth averages a high of 21°C and a low of 9°C. It gets 83 mm of precipitation over about 15 rainy days. The sun is out about 60% of daylight hours. The September record high is 34°C (2014) and the record low is 1°C (2008). September is one of the most comfortable months to visit.

Perth weather in October

In October, Perth averages a high of 23°C and a low of 12°C. It gets 37 mm of precipitation over about 9 rainy days. The sun is out about 60% of daylight hours. The October record high is 37°C (2013) and the record low is 2°C (1994). October is one of the most comfortable months to visit.

Perth weather in November

In November, Perth averages a high of 27°C and a low of 14°C. It gets 24 mm of precipitation over about 6 rainy days. The sun is out about 64% of daylight hours. The November record high is 41°C (2003) and the record low is 5°C (2004). November is one of the most comfortable months to visit.

Perth weather in December

In December, Perth averages a high of 29°C and a low of 17°C. It gets 10 mm of precipitation over about 4 rainy days. The sun is out about 77% of daylight hours. The December record high is 44°C (2007) and the record low is 7°C (2020).

Sunshine, humidity and wind in Perth

January is the sunniest month in Perth, with sunshine about 84% of daylight hours. July is the cloudiest, at 49%. Over the year the sun shines about 62% of daylight hours. Perth is sunnier than 77% of Australia.

Humidity peaks in June at 75% and is lowest in January at 50%.

Perth has about 51 days a year above 32°C. Perth is hotter than 60% of Australia.

Perth weather records

The hottest temperature on record at the Perth station is 44°C, on February 26, 1997. The coldest is -1°C, on June 17, 2006.

The wettest day on record brought 114 mm of rain, on February 10, 2017.

34 all-time records have been set at the station since 1993.

The annual mean temperature has changed by +0.4°C per decade since 1994.

The best time to visit Perth

The most comfortable time to visit is typically April to June and August to November, when daytime highs sit near 23°C.

Winter (June–August) is mild, with average highs around 19°C and lows near 8°C.

Spring (September–November) is warm, with average highs around 24°C and lows near 12°C.

Summer (December–February) is hot, with average highs around 31°C and lows near 18°C.

Autumn (March–May) is warm, with average highs around 26°C and lows near 14°C.

Perth climate questions

How much rain does Perth get?

Perth gets 723 mm of precipitation in an average year, over about 108 rainy days.

What is the wettest month in Perth?

July is the wettest month in Perth, with 142 mm. December is the driest, with 10 mm.

How many rainy days does Perth have a year?

Perth has about 108 days with measurable rain in an average year. July has the most, about 17.

What is the hottest month in Perth?

February is the warmest month in Perth, with an average high of 32°C.

What is the coldest month in Perth?

July is the coldest month in Perth, with an average low of 8°C.

What is the record high temperature in Perth?

The record high at the Perth station is 44°C, set on February 26, 1997. The record low is -1°C, on June 17, 2006.

What is the sunniest month in Perth?

January is the sunniest month in Perth, with sunshine about 84% of daylight hours. July is the cloudiest.

What is the best time to visit Perth?

The most comfortable time to visit is typically April to June and August to November, when daytime highs sit near 23°C.