December weather forecast
Auckland, New Zealand

The city of Auckland, New Zealand, viewed across the water early morning
The city of Auckland, New Zealand, viewed across the water early morning

December

Weather in December

December marks the beginning of summer in Auckland with warmer temperatures and increased daylight hours. Sea temperatures rise to 18.4°C (65.1°F), creating ideal conditions for a variety of water-based activities. Auckland experiences a slight increase in rainfall, but it does not dampen the holiday spirits. The winds mellow out to a gentle breeze, providing a perfect balance to the warm temperatures. With long and sunny days, December illuminates Auckland with the festive glow of the holiday season.

Temperature

As Auckland welcomes December, the average high-temperature is noted at a pleasant 20.3°C (68.5°F), closely aligning with the preceding month. December nighttime temperatures hover close to the daytime peak with an average of 15.5°C (59.9°F).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In December, the rain falls for 14.5 days. Throughout December, 57mm (2.24") of precipitation is accumulated. Throughout the year, in Auckland, there are 186.5 rainfall days, and 625mm (24.61") of precipitation is accumulated.

Sea temperature

In Auckland, New Zealand, the average seawater temperature in December is 18.4°C (65.1°F).
Note: For swimming, a surface water temperature of 18.4°C (65.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

With an average of 14h and 36min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 5:55 am and sunset at 8:24 pm. On the last day of December, sunrise is at 6:04 am and sunset at 8:43 pm NZDT.

Sunshine

With an average of 8.3h of sunshine, December has the most sunshine of the year.

UV index

January through April and December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in December transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Frequently asked questions

What is the usual temperature for Auckland in December?
In December, the average high-temperature and low-temperature are 20.3°C (68.5°F) and 15.5°C (59.9°F) respectively.
What is the average humidity in December?
In December, the average relative humidity is 78%.
How much does it rain in Auckland in December?
In Auckland, in December, it is raining for 14.5 days, with typically 57mm (2.24") of accumulated precipitation.
What is the sea water temperature in December in Auckland?
In Auckland, in December, the average water temperature is 18.4°C (65.1°F). For swimming, a surface water temperature of 18.4°C (65.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
When are the longest days?
December has the longest days of the year, with an average of 14h and 36min of daylight.
How many hours of daylight does Auckland have in December?
In December, the average day length is 14h and 38min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 5:55 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:43 pm NZDT.
What month has the most sunshine?
December has the most sunshine of the year, with an average of 8.3h of sunshine.
How many hours of sunshine does Auckland have in December?
In December, the average sunshine duration is 8.3h.
When is the highest UV index?
The months with the highest UV index are January through April and December, with an average maximum UV index of 5.
What is the UV index reading in December in Auckland?
The average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Auckland, New Zealand
Average temperature in December
Auckland, New Zealand
  • Average high temperature in December: 20.3°C

The warmest month (with the highest average high temperature) is February (22.6°C).
The month with the lowest average high temperature is July (13.8°C).

  • Average low temperature in December: 15.5°C

The month with the highest average low temperature is February (17.5°C).
The coldest month (with the lowest average low temperature) is July (10.4°C).

Average pressure in December - Auckland, New Zealand
Average pressure in December
Auckland, New Zealand
  • Average pressure in December: 1015.5mbar

The month with the highest atmospheric pressure is March (1018.3mbar).
The months with the lowest atmospheric pressure are January and September (1014.8mbar).

Average wind speed in December - Auckland, New Zealand
Average wind speed in December
Auckland, New Zealand
  • Average wind speed in December: 15.3km/h

The windiest month (with the highest average wind speed) is September (19km/h).
The calmest month (with the lowest average wind speed) is February (13.9km/h).

Average humidity in December - Auckland, New Zealand
Average humidity in December
Auckland, New Zealand
  • Average humidity in December: 78%

The months with the highest relative humidity are August and September (79%).
The months with the lowest relative humidity are January, February, March and November (77%).

Average rainfall in December - Auckland, New Zealand
Average rainfall in December
Auckland, New Zealand
  • Average rainfall in December: 57mm

The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is January (34mm).

Average rainfall days in December - Auckland, New Zealand
Average rainfall days in December
Auckland, New Zealand
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is January (11.1 days).

Average sea temperature in December - Auckland, New Zealand
Average sea temperature in December
Auckland, New Zealand
  • Average sea temperature in December: 18.4°C

The best month for swimming (with the highest average sea temperature) is February (21.3°C).
The coldest month (with the lowest average sea temperature) is August (14.7°C).

Average daylight in December / Average sunshine in December - Auckland, New Zealand
Average daylight in December /
Average sunshine in December
Auckland, New Zealand
  • Average daylight in December: 14h and 4min

The month with the longest days is December (Average daylight: 14h and 36min).
The month with the shortest days is June (Average daylight: 9h and 42min).

  • Average sunshine in December: 8h and 2min

The month with the most sunshine is December (Average sunshine: 8h and 18min).
The month with the least sunshine is August (Average sunshine: 6h and 24min).

Average sunshine days in December - Auckland, New Zealand
Average sunshine days in December
Auckland, New Zealand
  • Average sunshine days in December: 11.7 days

The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.7 days).

Average UV index in December - Auckland, New Zealand
Average UV index in December
Auckland, New Zealand
  • Average UV index in December: 5

The months with the highest UV index are January, February, March, April and December (UV index 5).
The month with the lowest UV index is June (UV index 3).

Average cloud cover in December - Auckland, New Zealand
Average cloud cover in December
Auckland, New Zealand
  • Average cloud cover in December: 43

The month with the most cloud cover is September (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 37).

Average visibility in December - Auckland, New Zealand
Average visibility in December
Auckland, New Zealand
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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