Weather in New Zealand for September 2025
Until now, September 2025 in New Zealand is slightly cooler than the historical average by -1.4 °C.
The forecast for the next days in New Zealand predicts temperatures to be around 14 °C, close to the historical average.
In general, the average temperature in New Zealand at the beginning of September is 14.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 13.9 °C by the end of September.
New Zealand experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 167.7 mm.
Temperatures
Rain 🌧️
New Zealand Weather September
What’s the Weather Like in New Zealand This September?
Temperatures trend during September in New Zealand
September weather in New Zealand day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 16° /4° | 0 mm | 5 | |
| 2 Sept. |  Overcast | 15° /5° | 0.6 mm | 4 | |
| 3 Sept. | Sunny | 14° /5° | 0.3 mm | 5 | |
| 4 Sept. | Sunny | 14° /5° | 0.4 mm | 5 | |
| 5 Sept. | Overcast | 13° /4° | 0.7 mm | 4 | |
| 6 Sept. | Sunny | 14° /4° | 0.7 mm | 4 | |
| 7 Sept. |  Patchy rain possible | 16° /5° | 0.4 mm | 5 | |
| 8 Sept. | Sunny | 11° /3° | 1.8 mm | 4 | |
| 9 Sept. |  Partly cloudy | 15° /3° | 0 mm | 5 | |
| 10 Sept. |  Heavy rain at times | 15° /5° | 5.5 mm | 5 | |
| 11 Sept. | Patchy rain possible | 13° /3° | 1.1 mm | 4 | |
| 12 Sept. | Overcast | 14° /3° | 0 mm | 4 | |
| 13 Sept. |  Moderate or heavy rain shower | 13° /4° | 4.2 mm | 4 | |
| 14 Sept. | Patchy rain possible | 11° /3° | 2.4 mm | 4 | |
| 15 Sept. | Sunny | 13° /3° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 11° /2° | 0.4 mm | 3 | |
| 17 Sept. | Partly cloudy | 19° /10° | 0 mm | 0.8 | |
| 18 Sept. | Patchy rain possible | 16° /6° | 4.1 mm | 0.9 | |
| 19 Sept. | Patchy rain possible | 10° /4° | 4.2 mm | 0.9 | |
| 20 Sept. | Sunny | 13° /2° | 0 mm | 0.9 | |
| 21 Sept. | Sunny | 18° /9° | 0 mm | 0 | |
| 22 Sept. | Sunny | 14° /6° | 0 mm | 4 | |
| 23 Sept. | Partly cloudy | 13° /7° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 9° /7° | 4 mm | 3 | |
| 25 Sept. | Patchy rain possible | 13° /6° | 0.7 mm | 3 | |
| 26 Sept. | Patchy rain possible | 15° /7° | 0.2 mm | 4 | |
| 27 Sept. | Sunny | 13° /3° | 0 mm | 4 | |
| 28 Sept. | Patchy rain possible | 14° /6° | 1.6 mm | 3 | |
| 29 Sept. | Sunny | 14° /5° | 0 mm | 4 | |
| 30 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| Next | |||||
Guide for New Zealand in September
In September, New Zealand experiences a transition from winter to spring, resulting in varied weather patterns across the country.
At the beginning of the month, the North Island typically enjoys mild temperatures with occasional showers, while the South Island may still experience cooler conditions with some snowfall in the alpine regions.
In the North Island, cities like Auckland and Wellington can expect temperatures around 15° at the start of the month, with increasing daylight hours and occasional gusty winds.
Meanwhile, the South Island's Christchurch and Queenstown may see temperatures around 10° with the possibility of frosty mornings and sunny afternoons.
As the month progresses, the weather in New Zealand generally becomes milder and more stable.
By the end of September, the North Island experiences pleasant spring weather with temperatures rising to around 18°, while the South Island sees a gradual increase in temperatures, reaching around 14° in Christchurch and Queenstown.
Rainfall becomes less frequent, and outdoor activities become more popular as the days become longer and the landscapes bloom with colorful blossoms and new foliage.
Overall, September marks the beginning of the delightful spring season in New Zealand, offering a mix of transitional weather and natural beauty.
New Zealand in September - FAQ
September rainfall patterns in New Zealand
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