Climate averages 1991–2020
Mackay weather
in September.
A warm, fairly dry month: the 8th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Mackay: daytime highs average 23.8°C and nights cool to about 18.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 16 mm of rain on roughly 4 days, which makes September a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Rockhampton (283 km away). In September its highs average 26.6°C, 2.7°C warmer than Mackay, with 20 mm of rain.
Among the 32 cities listed in Australia, Mackay ranks 7th of 32 for the warmest September highs and joint 3rd of 32 for the driest September (rainfall, lowest first). The mean September high of those 32 cities is 20.0°C; Mackay is 3.9°C warmer than that mean.
From September to October, average highs rise by 1.6°C to 25.5°C, and monthly rainfall rises from 16 mm to 34 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
Mackay climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.2°C24.5°C | 24.5°C | 212 | 15.9 | 13.313 h |
| February | 28.1°C24.5°C | 24.5°C | 225 | 17.4 | 12.813 h |
| March | 27.3°C23.8°C | 23.8°C | 171 | 15.2 | 12.212 h |
| April | 25.7°C22.0°C | 22.0°C | 89 | 13.0 | 11.612 h |
| May | 23.7°C19.4°C | 19.4°C | 54 | 10.6 | 11.111 h |
| June | 21.7°C17.0°C | 17.0°C | 43 | 7.8 | 10.911 h |
| July | 21.1°C15.8°C | 15.8°C | 32 | 4.3 | 11.011 h |
| August | 21.8°C16.4°C | 16.4°C | 25 | 4.3 | 11.411 h |
| September, selected | 23.8°C18.8°C | 18.8°C | 16 | 3.5 | 12.012 h |
| October | 25.5°C21.1°C | 21.1°C | 34 | 5.9 | 12.613 h |
| November | 26.8°C22.8°C | 22.8°C | 64 | 8.3 | 13.113 h |
| December | 28.0°C24.1°C | 24.1°C | 117 | 11.6 | 13.413 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
- Rockhampton in SeptemberAustralia · 283 kmHigh 26.6°C · Low 15.4°C · 20 mm rain
- Townsville in SeptemberAustralia · 324 kmHigh 27.3°C · Low 18.9°C · 9.8 mm rain
- Bundaberg in SeptemberAustralia · 526 kmHigh 24.8°C · Low 15.7°C · 25 mm rain
- Cairns in SeptemberAustralia · 591 kmHigh 26.3°C · Low 20.2°C · 14 mm rain
- Sunshine Coast in SeptemberAustralia · 730 kmHigh 23.1°C · Low 15.3°C · 39 mm rain
- Caloundra in SeptemberAustralia · 746 kmHigh 22.9°C · Low 15.3°C · 39 mm rain
- Toowoomba in SeptemberAustralia · 766 kmHigh 21.9°C · Low 9.3°C · 29 mm rain
- Sydney in SeptemberAustralia · 1428 kmHigh 19.4°C · Low 11.5°C · 50 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 Mackay) is explained once on the Mackay year overview and on the Sources, method and limits page.