Climate averages 1991–2020
Dunedin weather
in September.
A cool, moderately wet month: the 8th warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a cool month in Dunedin: daytime highs average 11.6°C and nights cool to about 4.4°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 50 mm of rain on roughly 11 days, which makes September a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 44 min on an average September day.
The nearest other city in this atlas is Christchurch (310 km away). In September its highs average 13.4°C, 1.9°C warmer than Dunedin, with 43 mm of rain.
Among the 11 cities listed in New Zealand, Dunedin ranks 11th of 11 for the warmest September highs and 2nd of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 13.8°C; Dunedin is 2.2°C cooler than that mean.
From September to October, average highs rise by 1.5°C to 13.1°C, and monthly rainfall rises from 50 mm to 74 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
Dunedin climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.4°C10.9°C | 10.9°C | 89 | 12.9 | 15.315 h |
| February | 17.4°C10.9°C | 10.9°C | 74 | 10.5 | 14.014 h |
| March | 16.1°C9.6°C | 9.6°C | 59 | 9.5 | 12.412 h |
| April | 13.9°C7.6°C | 7.6°C | 54 | 9.3 | 10.811 h |
| May | 11.5°C5.5°C | 5.5°C | 50 | 9.7 | 9.49 h |
| June | 8.9°C3.2°C | 3.2°C | 46 | 9.2 | 8.79 h |
| July | 8.4°C2.3°C | 2.3°C | 39 | 8.0 | 9.09 h |
| August | 9.7°C3.1°C | 3.1°C | 41 | 9.4 | 10.210 h |
| September, selected | 11.6°C4.4°C | 4.4°C | 50 | 10.6 | 11.712 h |
| October | 13.1°C6.1°C | 6.1°C | 74 | 13.5 | 13.413 h |
| November | 14.3°C7.6°C | 7.6°C | 77 | 13.6 | 14.815 h |
| December | 16.0°C9.6°C | 9.6°C | 96 | 14.4 | 15.616 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
- Christchurch in SeptemberNew Zealand · 310 kmHigh 13.4°C · Low 4.8°C · 43 mm rain
- Wellington in SeptemberNew Zealand · 615 kmHigh 12.3°C · Low 9.4°C · 74 mm rain
- Lower Hutt in SeptemberNew Zealand · 628 kmHigh 13.0°C · Low 8.8°C · 76 mm rain
- Palmerston North in SeptemberNew Zealand · 740 kmHigh 13.5°C · Low 6.5°C · 94 mm rain
- Hamilton, New Zealand in SeptemberNew Zealand · 982 kmHigh 14.8°C · Low 7.1°C · 114 mm rain
- Tauranga in SeptemberNew Zealand · 1024 kmHigh 14.8°C · Low 8.8°C · 112 mm rain
- Manukau City in SeptemberNew Zealand · 1052 kmHigh 15.0°C · Low 9.5°C · 86 mm rain
- Auckland in SeptemberNew Zealand · 1064 kmHigh 15.0°C · Low 10.0°C · 93 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 Dunedin) is explained once on the Dunedin year overview and on the Sources, method and limits page.