Climate averages 1991–2020
Adelaide Hills 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 Adelaide Hills: daytime highs average 15.1°C and nights cool to about 7.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 55 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 51 min on an average September day.
The nearest other city in this atlas is Adelaide (10 km away). In September its highs average 17.0°C, 1.8°C warmer than Adelaide Hills, with 53 mm of rain.
Among the 32 cities listed in Australia, Adelaide Hills ranks 26th of 32 for the warmest September highs and joint 24th of 32 for the driest September (rainfall, lowest first). The mean September high of those 32 cities is 20.0°C; Adelaide Hills is 4.9°C cooler than that mean.
From September to October, average highs rise by 3.3°C to 18.4°C, and monthly rainfall falls from 55 mm to 36 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
Adelaide Hills climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.4°C14.3°C | 14.3°C | 21 | 3.5 | 14.214 h |
| February | 26.1°C14.5°C | 14.5°C | 19 | 2.9 | 13.413 h |
| March | 23.2°C12.8°C | 12.8°C | 18 | 3.4 | 12.312 h |
| April | 19.4°C10.7°C | 10.7°C | 33 | 5.2 | 11.211 h |
| May | 15.3°C8.5°C | 8.5°C | 44 | 8.3 | 10.310 h |
| June | 12.4°C6.5°C | 6.5°C | 51 | 9.2 | 9.810 h |
| July | 11.7°C5.7°C | 5.7°C | 56 | 10.3 | 10.010 h |
| August | 12.6°C5.9°C | 5.9°C | 56 | 10.8 | 10.811 h |
| September, selected | 15.1°C7.2°C | 7.2°C | 55 | 9.8 | 11.812 h |
| October | 18.4°C8.8°C | 8.8°C | 36 | 6.8 | 12.913 h |
| November | 21.6°C10.9°C | 10.9°C | 34 | 5.9 | 13.914 h |
| December | 23.9°C12.6°C | 12.6°C | 28 | 5.4 | 14.414 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
- Adelaide in SeptemberAustralia · 10 kmHigh 17.0°C · Low 9.7°C · 53 mm rain
- Bendigo in SeptemberAustralia · 543 kmHigh 15.5°C · Low 6.6°C · 52 mm rain
- Ballarat in SeptemberAustralia · 547 kmHigh 13.4°C · Low 5.4°C · 69 mm rain
- Geelong in SeptemberAustralia · 620 kmHigh 15.7°C · Low 8.2°C · 49 mm rain
- Melbourne in SeptemberAustralia · 646 kmHigh 16.1°C · Low 7.9°C · 60 mm rain
- Canberra in SeptemberAustralia · 949 kmHigh 14.9°C · Low 4.0°C · 51 mm rain
- Sydney in SeptemberAustralia · 1152 kmHigh 19.4°C · Low 11.5°C · 50 mm rain
- Newcastle, Australia in SeptemberAustralia · 1225 kmHigh 20.0°C · Low 12.8°C · 53 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 Adelaide Hills) is explained once on the Adelaide Hills year overview and on the Sources, method and limits page.