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The climate in Australia is typically generally arid to semiarid; temperate in south and east; tropical in north. The terrain: mostly low plateau with deserts; fertile plain in southeast. For Canberra in January the daily average maximum temperatures is 30°C with the average minimum 17°C, while in June the average maximum is 18°C with a minimum of 5°C. The wettest month for Canberra is February with an average of 109.1mm of precipitation falling while the driest month is July with 29.5mm falling.
The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Margaret River.
Throughout the month of September daytime temperatures will generally reach highs of around 17°C that's about 63°F. At night the average minimum temperature drops down to around 8°C, that's 46°F.
In recent times the highest recorded temperature in September has been 25°C that's 76°F, with the lowest recorded temperature 1°C, about 34°F.
The average daily relative humidity for September is around 75%.
The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. From this a comfort level is calculated providing categories on how heat conditions might adversely affect someone.
Comfort Levels: Given average maximum temperatures and humidity levels generally you should not anticipate any discomfort from heat (see heat index for more information).
The average monthly amount of precipitation has been recorded at around 107 mm, that's 4 inches. Throughout the month you can expect to see rain or drizzle falling on 16 days of the month.
The average daily wind speed in September has been around 15 km/h, that’s the equivalent to about 9 mph, or 8 knots. In recent years the maximum sustained wind speed has reached 69 km/h, that’s the equivalent of around 43 mph, or 37 knots.
On average the month of September is not affected by foggy conditions.
The following charts show yearly weather trends with information on monthly weather averages and extremes.
The chart below plots the average high and low temperature for each month of the year. It also shows the maximum and minimum recorded temperatures.
The chart below plots the average monthly precipitation amount.
The chart below plots the average number of days in any month that you can expect to see rain falling.
The chart below plots the average daily wind speed you can expect for any month. It also shows the maximum recorded sustained wind speed for each month.