Climate averages 1991–2020
Auckland weather
in September.
A mild, wet month: the 9th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Auckland: daytime highs average 15.0°C and nights cool to about 10.0°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 93 mm of rain on roughly 14 days, which makes September a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 50 min on an average September day.
The nearest other city in this atlas is Manukau City (19 km away). In September its highs average 15.0°C, about as warm as Auckland, with 86 mm of rain.
Among the 11 cities listed in New Zealand, Auckland ranks joint 1st of 11 for the warmest September highs and 7th of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 13.8°C; Auckland is 1.2°C warmer than that mean.
From September to October, average highs rise by 1.3°C to 16.4°C, and monthly rainfall falls from 93 mm to 77 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
Auckland climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.0°C16.4°C | 16.4°C | 68 | 8.7 | 14.414 h |
| February | 22.6°C17.1°C | 17.1°C | 65 | 8.0 | 13.513 h |
| March | 21.1°C15.8°C | 15.8°C | 69 | 8.6 | 12.312 h |
| April | 18.9°C14.0°C | 14.0°C | 75 | 9.5 | 11.211 h |
| May | 16.5°C12.1°C | 12.1°C | 96 | 11.5 | 10.210 h |
| June | 14.4°C10.2°C | 10.2°C | 101 | 11.8 | 9.710 h |
| July | 13.6°C9.1°C | 9.1°C | 114 | 14.0 | 9.910 h |
| August | 13.8°C9.1°C | 9.1°C | 104 | 14.6 | 10.711 h |
| September, selected | 15.0°C10.0°C | 10.0°C | 93 | 13.6 | 11.812 h |
| October | 16.4°C11.3°C | 11.3°C | 77 | 11.9 | 13.013 h |
| November | 18.0°C12.8°C | 12.8°C | 74 | 10.8 | 14.114 h |
| December | 20.2°C15.0°C | 15.0°C | 92 | 11.0 | 14.615 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
- Manukau City in SeptemberNew Zealand · 19 kmHigh 15.0°C · Low 9.5°C · 86 mm rain
- Hamilton, New Zealand in SeptemberNew Zealand · 114 kmHigh 14.8°C · Low 7.1°C · 114 mm rain
- Tauranga in SeptemberNew Zealand · 155 kmHigh 14.8°C · Low 8.8°C · 112 mm rain
- New Plymouth in SeptemberNew Zealand · 254 kmHigh 13.4°C · Low 8.3°C · 173 mm rain
- Hastings, New Zealand in SeptemberNew Zealand · 360 kmHigh 14.9°C · Low 6.9°C · 60 mm rain
- Palmerston North in SeptemberNew Zealand · 397 kmHigh 13.5°C · Low 6.5°C · 94 mm rain
- Lower Hutt in SeptemberNew Zealand · 486 kmHigh 13.0°C · Low 8.8°C · 76 mm rain
- Wellington in SeptemberNew Zealand · 493 kmHigh 12.3°C · Low 9.4°C · 74 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 Auckland) is explained once on the Auckland year overview and on the Sources, method and limits page.