Climate averages 1991–2020
Geelong weather
in September.
A mild, moderately wet month: the 9th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Geelong: daytime highs average 15.7°C and nights cool to about 8.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 49 mm of rain on roughly 10 days, which makes September a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 49 min on an average September day.
The nearest other city in this atlas is Melbourne (65 km away). In September its highs average 16.1°C, about as warm as Geelong, with 60 mm of rain.
Among the 32 cities listed in Australia, Geelong ranks 24th of 32 for the warmest September highs and 15th of 32 for the driest September (rainfall, lowest first). The mean September high of those 32 cities is 20.0°C; Geelong is 4.3°C cooler than that mean.
From September to October, average highs rise by 2.3°C to 18.0°C, and monthly rainfall rises from 49 mm to 50 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Geelong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.0°C14.8°C | 14.8°C | 37 | 5.6 | 14.514 h |
| February | 23.8°C15.1°C | 15.1°C | 34 | 4.6 | 13.514 h |
| March | 22.2°C13.9°C | 13.9°C | 26 | 4.6 | 12.412 h |
| April | 19.2°C11.4°C | 11.4°C | 33 | 5.7 | 11.111 h |
| May | 16.1°C9.6°C | 9.6°C | 32 | 7.1 | 10.110 h |
| June | 13.7°C7.9°C | 7.9°C | 39 | 8.6 | 9.610 h |
| July | 13.0°C7.1°C | 7.1°C | 37 | 9.1 | 9.810 h |
| August | 13.8°C7.2°C | 7.2°C | 40 | 9.6 | 10.711 h |
| September, selected | 15.7°C8.2°C | 8.2°C | 49 | 10.2 | 11.812 h |
| October | 18.0°C9.6°C | 9.6°C | 50 | 9.0 | 13.013 h |
| November | 19.9°C11.4°C | 11.4°C | 55 | 8.3 | 14.214 h |
| December | 21.9°C12.9°C | 12.9°C | 42 | 6.9 | 14.815 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Melbourne in SeptemberAustralia · 65 kmHigh 16.1°C · Low 7.9°C · 60 mm rain
- Ballarat in SeptemberAustralia · 79 kmHigh 13.4°C · Low 5.4°C · 69 mm rain
- Bendigo in SeptemberAustralia · 155 kmHigh 15.5°C · Low 6.6°C · 52 mm rain
- Launceston in SeptemberAustralia · 436 kmHigh 14.0°C · Low 4.8°C · 76 mm rain
- Tuggeranong in SeptemberAustralia · 518 kmHigh 14.9°C · Low 4.0°C · 67 mm rain
- Canberra in SeptemberAustralia · 531 kmHigh 14.9°C · Low 4.0°C · 51 mm rain
- Hobart in SeptemberAustralia · 583 kmHigh 14.1°C · Low 6.1°C · 53 mm rain
- Adelaide Hills in SeptemberAustralia · 620 kmHigh 15.1°C · Low 7.2°C · 55 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Geelong) is explained once on the Geelong year overview and on the Sources, method and limits page.