Climate Insights for Perth

The climate in Perth is warm and mild. The average annual temperature is 21°C and approximately 337 mm of precipitation falls per year. January is the wettest month, receiving around 67 mm of rainfall. Perth is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: December, January, November. The coldest months are July, June, August, when temperatures can drop to 4°C.The climate in Perth is warm and mild. The average annual temperature is 71°F and approximately 13.3 in of precipitation falls per year. January is the wettest month, receiving around 2.7 in of rainfall. Perth is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: December, January, November. The coldest months are July, June, August, when temperatures can drop to 40°F.

Temperatures in Perth vary considerably across the year, with a 30°C difference between the coldest and warmest months. The warmest month is December, when average highs reach 34°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 4°C and an average of 13°C. The average daily temperature swing is 16°C, meaning significant differences between daytime and nighttime temperatures. The sharpest temperature change occurs between August and September, with a 5°C shift in average temperatures.Temperatures in Perth vary considerably across the year, with a 54°F difference between the coldest and warmest months. The warmest month is December, when average highs reach 94°F and the mean temperature sits around 81°F. July is the coolest month, with minimum temperatures around 40°F and an average of 55°F. The average daily temperature swing is 29°F, meaning significant differences between daytime and nighttime temperatures. The sharpest temperature change occurs between August and September, with a 9°F shift in average temperatures.

Perth is a quite dry location, receiving approximately 337 mm of precipitation annually, which averages out to around 28 mm per month. The wettest month is January, averaging 67 mm of rainfall. February and April also tend to see above-average precipitation. The driest month is July, with just 1 mm. That's 66 mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Perth is a quite dry location, receiving approximately 13.3 in of precipitation annually, which averages out to around 1.1 in per month. The wettest month is January, averaging 2.6 in of rainfall. February and April also tend to see above-average precipitation. The driest month is July, with just 0 in. That's 2.6 in less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Perth is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.Perth is moderately windy, with an average annual wind speed of 10mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is October, averaging 11mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 9mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months.

The best time to visit Perth is during March, April, May, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 20 mm per month. By contrast, December can be uncomfortably hot with highs reaching 34°C, while July is the coldest period with lows dropping to 4°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Perth is during March, April, May, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 69°F with modest rainfall averaging 0.8 in per month. By contrast, December can be uncomfortably hot with highs reaching 94°F, while July is the coldest period with lows dropping to 40°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Perth based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Perth based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.