December weather forecast
Auckland, New Zealand

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

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

With the start of December, Auckland measures an average high-temperature of a pleasant 20.3°C (68.5°F), not significantly differing from November's 18.2°C (64.8°F). An average low-temperature of 15.5°C (59.9°F), slightly less than the daytime peak, marks the month of December.

Humidity

In Auckland, the average relative humidity in December is 78%.

Rainfall

In Auckland, in December, during 14.5 rainfall days, 57mm (2.24") of precipitation is typically accumulated. In Auckland, during the entire year, the rain falls for 186.5 days and collects up to 625mm (24.61") of precipitation.

Sea temperature

In Auckland, the average seawater temperature in December is 18.4°C (65.1°F).
Note: In water with a temperature of 18.4°C (65.1°F), swimming is not a joy for most people. The challenge of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°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, in Auckland, 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 in Auckland.

UV index

The months with the highest UV index in Auckland, New Zealand, are January through April and December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 5 during December leads to these advisories:
Adopt protective measures - It is advised to guard against sun damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What is the temperature in December in Auckland?

An average high-temperature, in December, in Auckland, is 20.3°C (68.5°F) and the average low-temperature is 15.5°C (59.9°F).

What is the average humidity in December in Auckland?

The average relative humidity in December in Auckland is 78%.

How many days does it rain in December in Auckland?

In December, in Auckland, the rain falls for 14.5 days. Throughout December, 57mm (2.24") of precipitation is accumulated.

How cold is the water in December in Auckland?

In Auckland, New Zealand, the average seawater temperature in December is 18.4°C (65.1°F). For most, swimming in 18.4°C (65.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

When are the longest days in Auckland?

December has the longest days of the year in Auckland, New Zealand, with an average of 14h and 36min of daylight.

How many hours of daylight does Auckland have in December?

The average day length in December in Auckland is 14h and 38min.

When is the sunrise / sunset in December in Auckland?

In December, on the first day of the month, sunrise is at 5:55 am and sunset at 8:24 pm. On the last day of the month, in Auckland, New Zealand, sunrise is at 6:04 am and sunset at 8:43 pm NZDT.

What month has the most sunshine in Auckland?

The month with the most sunshine in Auckland is December, with an average of 8.3h of sunshine.

How long on average sun shines in December in Auckland?

The average sunshine duration in December is 8.3h.

What is the month with the highest UV index in Auckland?

January through April and December, with an average maximum UV index of 5, are months with the highest UV index.

How high is the UV index in December in Auckland?

In December, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.

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).

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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).

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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).

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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%).

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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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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Auckland, New Zealand

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