Climate averages 1991–2020
Manukau City weather
in September.
A mild, moderately wet month: the 9th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Manukau City: daytime highs average 15.0°C and nights cool to about 9.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 86 mm of rain on roughly 13 days, which makes September a moderately wet month (the 7th 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 Auckland (19 km away). In September its highs average 15.0°C, about as warm as Manukau City, with 93 mm of rain.
Among the 11 cities listed in New Zealand, Manukau City ranks joint 1st of 11 for the warmest September highs and 6th of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 13.8°C; Manukau City is 1.2°C warmer than that mean.
From September to October, average highs rise by 1.4°C to 16.4°C, and monthly rainfall falls from 86 mm to 76 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
Manukau City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.2°C16.0°C | 16.0°C | 65 | 8.4 | 14.414 h |
| February | 22.8°C16.7°C | 16.7°C | 64 | 8.1 | 13.513 h |
| March | 21.2°C15.3°C | 15.3°C | 67 | 7.7 | 12.312 h |
| April | 18.9°C13.4°C | 13.4°C | 78 | 9.2 | 11.211 h |
| May | 16.4°C11.5°C | 11.5°C | 92 | 10.5 | 10.210 h |
| June | 14.3°C9.6°C | 9.6°C | 100 | 11.2 | 9.710 h |
| July | 13.5°C8.4°C | 8.4°C | 112 | 12.9 | 9.910 h |
| August | 13.8°C8.5°C | 8.5°C | 97 | 13.7 | 10.711 h |
| September, selected | 15.0°C9.5°C | 9.5°C | 86 | 12.9 | 11.812 h |
| October | 16.4°C10.9°C | 10.9°C | 76 | 11.4 | 13.013 h |
| November | 18.1°C12.4°C | 12.4°C | 71 | 10.2 | 14.114 h |
| December | 20.3°C14.6°C | 14.6°C | 87 | 10.9 | 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
- Auckland in SeptemberNew Zealand · 19 kmHigh 15.0°C · Low 10.0°C · 93 mm rain
- Hamilton, New Zealand in SeptemberNew Zealand · 95 kmHigh 14.8°C · Low 7.1°C · 114 mm rain
- Tauranga in SeptemberNew Zealand · 137 kmHigh 14.8°C · Low 8.8°C · 112 mm rain
- New Plymouth in SeptemberNew Zealand · 241 kmHigh 13.4°C · Low 8.3°C · 173 mm rain
- Hastings, New Zealand in SeptemberNew Zealand · 341 kmHigh 14.9°C · Low 6.9°C · 60 mm rain
- Palmerston North in SeptemberNew Zealand · 379 kmHigh 13.5°C · Low 6.5°C · 94 mm rain
- Lower Hutt in SeptemberNew Zealand · 470 kmHigh 13.0°C · Low 8.8°C · 76 mm rain
- Wellington in SeptemberNew Zealand · 478 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 Manukau City) is explained once on the Manukau City year overview and on the Sources, method and limits page.