Melbourne weather in September
September in Melbourne: cool, a little rain, with clean air — an excellent time to visit.
#8 of 12 months in Melbourne · #287 of 604 destinations to visit in September · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Melbourne climate normals — September
| Daytime high | 17°C / 62°F | 🙂 cool |
|---|---|---|
| Nighttime low | 9°C / 48°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 70 mm / 2.8 in | 🌦 some rain |
| Rainy days | 12 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 9.1 h/day | |
| Daylight | 11.9 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Melbourne in September — FAQ
- Is September a good time to visit Melbourne?
- September in Melbourne: cool, a little rain, with clean air — an excellent time to visit. It ranks #8 of 12 months for Melbourne on SeasonMap's comfort score (81/100).
- What is the weather like in Melbourne in September?
- In September, Melbourne averages a daily high of 16.6°C and a low of 9°C, with about 70.1 mm of rain over roughly 12 rainy days.
- What is the air quality in Melbourne in September?
- Melbourne has a mean US Air Quality Index of about 31 in September.