Weather in New Zealand for December 2025
In general, the average temperature in New Zealand at the beginning of December is 18.7 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 19.1 °C by the end of December.
New Zealand experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 74.4 mm.
Temperatures
Rain 🌧️
New Zealand Weather December
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  17° | 3  23° | 4 21° | 5 20° | 6 17° | 7 16° |
| 8  19° | 9 22° | 10 20° | 11  20° | 12 17° | 13 18° | 14 21° |
| 15 20° | 16 20° | 17 19° | 18 18° | 19 20° | 20 20° | 21 20° |
| 22 22° | 23 20° | 24 20° | 25 20° | 26 19° | 27 17° | 28 17° |
| 29 23° | 30  19° | 31 19° |
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Temperatures trend during December in New Zealand
December weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Patchy rain possible | 17° /10° | 0.3 mm | 6 | |
| 2 Dec. | Overcast | 17° /9° | 1.7 mm | 6 | |
| 3 Dec. | Moderate rain at times | 23° /10° | 1.2 mm | 7 | |
| 4 Dec. | Patchy rain possible | 21° /11° | 1.2 mm | 7 | |
| 5 Dec. | Overcast | 20° /11° | 1.1 mm | 7 | |
| 6 Dec. | Patchy rain possible | 17° /9° | 1 mm | 6 | |
| 7 Dec. | Patchy rain possible | 16° /9° | 0.2 mm | 6 | |
| 8 Dec. | Partly cloudy | 19° /10° | 0.2 mm | 7 | |
| 9 Dec. | Partly cloudy | 22° /9° | 0.2 mm | 8 | |
| 10 Dec. | Partly cloudy | 20° /10° | 0.8 mm | 7 | |
| 11 Dec. | Sunny | 20° /9° | 2.8 mm | 7 | |
| 12 Dec. | Overcast | 17° /9° | 1.6 mm | 7 | |
| 13 Dec. | Overcast | 18° /9° | 0.2 mm | 7 | |
| 14 Dec. | Partly cloudy | 21° /10° | 0 mm | 8 | |
| 15 Dec. | Patchy rain possible | 20° /11° | 10.6 mm | 7 | |
| 16 Dec. | Partly cloudy | 20° /11° | 4.3 mm | 7 | |
| 17 Dec. | Patchy rain possible | 19° /11° | 1.9 mm | 7 | |
| 18 Dec. | Overcast | 18° /9° | 4.6 mm | 7 | |
| 19 Dec. | Sunny | 20° /10° | 1.9 mm | 7 | |
| 20 Dec. | Sunny | 20° /11° | 4.7 mm | 7 | |
| 21 Dec. | Patchy rain possible | 20° /11° | 1.8 mm | 7 | |
| 22 Dec. | Patchy rain possible | 22° /11° | 2 mm | 7 | |
| 23 Dec. | Patchy rain possible | 20° /12° | 3.4 mm | 6 | |
| 24 Dec. | Patchy rain possible | 20° /12° | 3 mm | 6 | |
| 25 Dec. | Patchy rain possible | 20° /12° | 0.8 mm | 6 | |
| 26 Dec. | Moderate or heavy rain shower | 19° /10° | 9.8 mm | 6 | |
| 27 Dec. | Patchy rain possible | 17° /10° | 1.8 mm | 6 | |
| 28 Dec. | Partly cloudy | 17° /10° | 4.8 mm | 6 | |
| 29 Dec. | Sunny | 23° /11° | 1.2 mm | 7 | |
| 30 Dec. | Cloudy | 19° /11° | 1.7 mm | 6 | |
| 31 Dec. | Cloudy | 19° /10° | 1 mm | 6 | |
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Guide for New Zealand in December
In December, New Zealand experiences a transition from spring to summer, 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 experiences cooler conditions with some areas still receiving snowfall in the alpine regions.
In the North Island, cities like Auckland and Wellington can expect temperatures around 20° during the day, while the South Island, including Christchurch and Queenstown, may see temperatures around 15° during the day.
As the month progresses, New Zealand's weather becomes increasingly warm and dry, especially in the central and northern regions.
By the end of December, the North Island experiences summer-like conditions with temperatures reaching 25° during the day, while the South Island sees a significant rise in temperatures, reaching around 20° during the day in major cities.
Overall, December in New Zealand offers a mix of spring and summer weather, making it an ideal time to explore the diverse landscapes and outdoor activities that the country has to offer.
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New Zealand in December - FAQ
December rainfall patterns in New Zealand
UV exposure in New Zealand during December
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