Melbourne in September
In September, Melbourne has 67.4 mm (2.65 in) of rain, a daily high of 17.4 °C (63.3 °F) and a daily low of 7.9 °C (46.2 °F), as 1991-2020 model estimates; figures in brackets are converted. The daily high is a model estimate, adjusted against station records.
Last updated : first sourced version.
Best time to visit Melbourne: September is a near miss for our rule: nights are 0.1 °C under our 8 °C (model estimates). Expect 9.1 rain days (model estimate) and days that grow by 1 h 09 min.
What September is like in Melbourne
- In spring, the Royal Botanic Gardens are at their peak, with magnolias and peonies in flower. People float past on the lake. Source: What’s On Melbourne (City of Melbourne), checked .
- In spring, daffodils bloom in the formal flowerbeds of Carlton Gardens, near the Hochgurtel Fountain and the round French Fountain. The beds change with each season. Source: What’s On Melbourne (City of Melbourne), checked .
- In spring, Fitzroy Gardens are awash with colour. In the southern part, a stream runs between ferns and rainforest plants. Source: What’s On Melbourne (City of Melbourne), checked .
Key figures
Weather in September, 1991-2020 model estimates
- Daily high
- 17.4 °C (63.3 °F)
- Daily low
- 7.9 °C (46.2 °F)
- Rain
- 67.4 mm (2.65 in) in the month
- Sunshine
- no data
Model estimate 1991-2020, not a weather station: ERA5-Land model estimates (Copernicus), computed by City by Month for the grid cell nearest the city. Daily high and Days with rain: model estimate, adjusted against station records. Licence: CC BY 4.0. Checked . How we make and test model estimates
Model estimate for the ERA5-Land grid cell at 37.8° S, 145.0° E, 4 km from the city centre point.
How we define and convert these figures
Notes. Sunshine: Not in our ERA5-Land estimates.
Daylight on 15 September 2026
- Sunrise
- 06:21 local time
- Sunset
- 18:10 local time
- Day length
- 11 h 49 min
Day length 1-30 September: 11 h 16 min to 12 h 25 min, +1 h 09 min.
Source: NOAA Solar Calculator equations, checked .
Month by month
Each month: daily high in °C, then rain in mm, 1991-2020 model estimates.
ERA5-Land model estimates 1991-2020, as above, checked .
This month against the year
| Measure | September | Rank |
|---|---|---|
| Daily high | 17.4 °C | 4th coldest |
| Daily low | 7.9 °C | 4th coldest |
| Rain | 67.4 mm | wettest |
| Sunshine | no data | no data |
| Day length | 11 h 49 min | 6th shortest |
Equal values share a rank. How we rank months
Melbourne in September, on average: 9.1 rain days (1 mm or more). Model estimate, adjusted against station records.
ERA5-Land model estimates 1991-2020, as above, checked .
Day length: NOAA solar equations, checked .
Public holidays this month
| Date | Holiday | Scope |
|---|---|---|
| Friday | Friday before the AFL Grand Final | regional |
Checked against the official list, .
September 2027: no data. 1 date not yet set officially (Friday before the AFL Grand Final). Official list
Regional holidays are for AU-VIC. How we check holidays
Source: holidays Python library, checked . Library: holidays 0.105.
Same month in 8 model-estimate cities
Melbourne is the coolest of our 8 model-estimate cities in September by mean daily high. How we rank cities
Closest high and low in September: Sydney (3.9 °C apart), Porto (8.1), Istanbul (9.1).
| City | Gap from Melbourne, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Melbourne (this page) | — | 17.4 | 7.9 | 67.4 | no data |
| Sydney (closest) | 3.9 | 21.1 | 11.9 | 49.1 | no data |
| Porto (closest) | 8.1 | 25.6 | 15.9 | 59.5 | no data |
| Istanbul (closest) | 9.1 | 25.2 | 18.2 | 49.0 | no data |
| Lisbon | 9.5 | 26.1 | 18.2 | 31.2 | no data |
| Mumbai | 14.7 | 29.8 | 24.9 | no data | no data |
| Bangkok | 16.0 | 32.1 | 25.2 | no data | no data |
| Delhi | 16.3 | 33.7 | 24.2 | no data | no data |
Sources (1991-2020): ERA5-Land model estimates, checked . Each city's page names its grid cell. All sources in full on Methodology.
Sources
- Attribution: Copernicus Climate Change Service (2025): ERA5 Land hourly time-series data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). DOI: 10.24381/ee82e357. Accessed on the check date shown. Generated using or contains modified Copernicus Climate Change Service information 2025. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Licence: CC BY 4.0. Checked .
- NOAA Solar Calculator equations, computed locally, NOAA Global Monitoring Laboratory (method); City by Month (computation). Attribution: Computed with the NOAA Solar Calculator method (no NOAA endorsement implied). Licence: Method, not data. Checked .
- holidays Python library, run locally. Attribution: holidays library, Vacanza team. Licence: MIT. Checked .
Cite this page: City by Month. "Melbourne in September: weather, daylight, holidays". https://citybymonth.com/cities/australia/melbourne/september/. Last updated 8 November 2026.