Weather in Melbourne in September 2025
Average weather
Average temperature in Melbourne in September
The temperature in September is +20°C on average, with a range between a maximum of +30°C during the day and a minimum of +4°C at night.
The average maximum temperature goes up 58% by the end of the month, compared with the beginning of the month, from +15°C to +30°C.
Is Melbourne warm or cold in September?
Melbourne is typically mild in September.
Maximum temperatures go up compared to the previous month from +14°C to +16°C. The minimum temperature also goes up from +8°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Melbourne:
Water temperature in Melbourne in September
Water in Melbourne in September is Cold. It varies from +14°C to +15°C, with an average of +15°C. This is almost similar to the air temperature, which averages +16°C.
The water temperature in September is one of the coldest of the entire year:
Can you swim in Melbourne in September?
Climate in Melbourne in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +14°C | +16°C | +19°C | ||||
| Min. temperature | ||||||
| -1°C | 0°C | +3°C | ||||
| Max. temperature | ||||||
| +24°C | +30°C | +36°C | ||||
| Rainfall | ||||||
| 52 mm | 57 mm | 65 mm | ||||
| Wind | ||||||
| 5 m/s | 5 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +15°C | +15°C | +15°C | ||||
| Humidity | ||||||
| 73% | 70% | 67% | ||||
| Air pressure | ||||||
| 1017 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 4 | 5 | 6 | ||||
| Cloudy days | ||||||
| 10 | 8 | 9 | ||||
| Rainy days | ||||||
| 17 | 17 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +14°C to +16°C during the day. Prepare for more rain. Average rainfall goes from 52 mm to 57 mm. It feels drier, as humidity decreases from 73% to 70%. The average wind speed doesn’t change much during September, staying around 5 m/s. The good news is there are likely to be more sunny days in September, from 4 to 5.
October brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Melbourne is gradually increasing during September, going from 3 m/s to 7 m/s over the course of the month.
Rain
How was the weather last September in Melbourne?
Climate Change over Years
The climate in Melbourne in September has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+17°C) and the highest in 2014 (+21°C). The driest year was 2006 with only 349 mm of rainfall, and the wettest year was 2022 with 1214 mm.
FAQ
Is September a good time to visit Melbourne?
Can you sunbathe in Melbourne in September?
Can you swim in Melbourne in September?
Is Melbourne rainy in September?
Is it sunny in Melbourne in September?
Other cities in Australia
Monthly weather in Melbourne
Source of the data
For this page, we’ve looked at the typical weather in Melbourne, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.