December weather forecast
Porirua, New Zealand

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Weather in December

As the festive month, December brings about the highest temperatures of the year, with an average high of 17.5°C (63.5°F). Rainfall increases to 42mm (1.65"), slightly higher than in November but the occurrence remains moderate. The long days filled with sunshine celebrate the arrival of summer. The favourable weather conditions cater to a myriad of outdoor social events around Porirua during the holidays.

Temperature

Porirua indicates an average high-temperature of a comfortable 17.5°C (63.5°F) in December, showing minor variation from November's 15.4°C (59.7°F). Porirua notes a steady average temperature of 13.4°C (56.1°F) during the nights of December.

Humidity

April through June, August and December, with an average relative humidity of 81%, are the most humid months.

Rainfall

In Porirua, New Zealand, in December, during 11.1 rainfall days, 42mm (1.65") of precipitation is typically accumulated. In Porirua, during the entire year, the rain falls for 142.6 days and collects up to 465mm (18.31") of precipitation.

Sea temperature

In December, the average sea temperature in Porirua is 15.8°C (60.4°F).
Note: Most people do not enjoy swimming in water that is 15.8°C (60.4°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).

Daylight

With an average of 15h and 6min of daylight, December has the longest days of the year in Porirua.
On the first day of December, sunrise is at 5:42 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:56 pm NZDT.

Sunshine

November and December, with an average of 9.1h of sunshine, are months with the most sunshine in Porirua.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in December converts into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What are the temperatures in Porirua in December?

The average high-temperature and low-temperature in Porirua during December are 17.5°C (63.5°F) and 13.4°C (56.1°F) respectively.

What is the most humid month in Porirua?

The months with the highest humidity in Porirua are April through June, August and December, with an average relative humidity of 81%.

What is the average humidity in December in Porirua?

The average relative humidity in December in Porirua, New Zealand, is 81%.

How many days does it rain in December in Porirua?

In Porirua, New Zealand, during December, the rain falls for 11.1 days and regularly aggregates up to 42mm (1.65") of precipitation.

What is the sea water temperature in December in Porirua?

In December, the average sea temperature in Porirua is 15.8°C (60.4°F). Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

When are the longest days in Porirua?

The month with the longest days is December, with an average of 15h and 6min of daylight.

What is the average length of the day in December in Porirua?

The average day length in December is 15h and 5min.

When is the sunrise / sunset in December in Porirua?

On the first day of December in Porirua, New Zealand, sunrise is at 5:42 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:56 pm NZDT.

What are the months with the most sunshine in Porirua?

November and December, with an average of 9.1h of sunshine, are months with the most sunshine in Porirua, New Zealand.

How long on average sun shines in December in Porirua?

In Porirua, New Zealand, the average sunshine duration in December is 9.1h.

When is the highest UV index in Porirua?

January, February and December, with an average maximum UV index of 5, are months with the highest UV index in Porirua.

What is the UV index reading in December in Porirua?

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

Average temperature in December
Porirua, New Zealand

Average temperature in December - Porirua, New Zealand
  • Average high temperature in December: 17.5°C

The warmest month (with the highest average high temperature) is February (19.2°C).
The month with the lowest average high temperature is July (11.2°C).

  • Average low temperature in December: 13.4°C

The month with the highest average low temperature is February (14.7°C).
The coldest month (with the lowest average low temperature) is July (8.2°C).

Average pressure in December
Porirua, New Zealand

Average pressure in December - Porirua, New Zealand
  • Average pressure in December: 1013.4mbar

The month with the highest atmospheric pressure is March (1017.7mbar).
The months with the lowest atmospheric pressure are September and November (1012.3mbar).

Average wind speed in December
Porirua, New Zealand

Average wind speed in December - Porirua, New Zealand
  • Average wind speed in December: 21.5km/h

The windiest month (with the highest average wind speed) is September (24.1km/h).
The calmest month (with the lowest average wind speed) is March (20.1km/h).

Average humidity in December
Porirua, New Zealand

Average humidity in December - Porirua, New Zealand
  • Average humidity in December: 81%

The months with the highest relative humidity are April, May, June, August and December (81%).
The months with the lowest relative humidity are January, February, March, July, September, October and November (80%).

Average rainfall in December
Porirua, New Zealand

Average rainfall in December - Porirua, New Zealand
  • Average rainfall in December: 42mm

The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (22mm).

Average rainfall days in December
Porirua, New Zealand

Average rainfall days in December - Porirua, New Zealand
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (7.9 days).

Average sea temperature in December
Porirua, New Zealand

Average sea temperature in December - Porirua, New Zealand
  • Average sea temperature in December: 15.8°C

The best month for swimming (with the highest average sea temperature) is February (17.1°C).
The coldest month (with the lowest average sea temperature) is August (12.3°C).

Average daylight in December /
Average sunshine in December
Porirua, New Zealand

Average daylight in December / Average sunshine in December - Porirua, New Zealand
  • Average daylight in December: 15h and 1min

The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 18min).

  • Average sunshine in December: 9h and 1min

The months with the most sunshine are November and December (Average sunshine: 9h and 6min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).

Average sunshine days in December
Porirua, New Zealand

Average sunshine days in December - Porirua, New Zealand
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is March (20.6 days).
The month with the least sunshine days is June (12.6 days).

Average UV index in December
Porirua, New Zealand

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

The months with the highest UV index are January, February and December (UV index 5).
The months with the lowest UV index are May, June, July and August (UV index 3).

Average cloud cover in December
Porirua, New Zealand

Average cloud cover in December - Porirua, New Zealand
  • Average cloud cover in December: 39

The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is February (Cloud cover 31).

Average visibility in December
Porirua, New Zealand

Average visibility in December - Porirua, 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).

Porirua, New Zealand

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