Avarua District
Cook Islands
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Avarua District, Cook Islands

Aerial view of the coastal Avarua District in the Cook Islands, with clear calm waters and mountains
Aerial view of the coastal Avarua District in the Cook Islands, with clear calm waters and mountains
The first month of the summer, December, is still a warm month in Avarua District, Cook Islands, with average temperature varying between 22°C (71.6°F) and 28°C (82.4°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a still warm 28°C (82.4°F). In Avarua District, in December, the average low-temperature is 22°C (71.6°F).

Rainfall

In Avarua District, it is raining for 11 days, with typically 229mm (9") of accumulated precipitation. In Avarua District, during the entire year, the rain falls for 114 days and collects up to 2190mm (86.2") of precipitation.

Sea temperature

In Avarua District, the average water temperature is 26.8°C (80.2°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

With an average of 13.4h of daylight, December has the longest days of the year in Avarua District.

Sunshine

In Avarua District, the average sunshine is 11h.

UV index

Months with the highest UV index are January through March, October through December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 12 interpret into the following advice:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in December in Avarua District?

In December, in Avarua District, Cook Islands, the average high-temperature is 28°C (82.4°F), and the average low-temperature is 22°C (71.6°F).

How much does it rain in Avarua District in December?

In December, in Avarua District, Cook Islands, the rain falls for 11 days. Throughout December, 229mm (9") of precipitation is accumulated.

How warm is the water in December in Avarua District?

In December, the average sea temperature is 26.8°C (80.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

When are the longest days in Avarua District?

The month with the longest days is December, with an average of 13.4h of daylight.

How many hours of daylight does Avarua District have in December?

In Avarua District, the average length of the day in December is 13.4h.

How long on average sun shines in December in Avarua District?

In Avarua District, Cook Islands, the average sunshine in December is 11h.

What are the months with the highest UV index in Avarua District?

January through March, October through December, with an average maximum UV index of 12, are months with the highest UV index in Avarua District, Cook Islands.

How high is the UV index in December in Avarua District?

The average daily maximum UV index in December in Avarua District is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Avarua District, Cook Islands
  • Average high temperature in December: 28°C

Warmest months (with the highest average high temperature) are February and March (29°C).
Months with the lowest average high temperature are July and August (25°C).

  • Average low temperature in December: 22°C

Months with the highest average low temperature are January, February and March (23°C).
Coldest months (with the lowest average low temperature) are July, August and September (19°C).

Average rainfall in December - Avarua District, Cook Islands
  • Average rainfall in December: 229mm

The wettest month (with the highest rainfall) is January (267mm).
The driest month (with the lowest rainfall) is July (102mm).

Average rainfall days in December - Avarua District, Cook Islands
  • Average rainfall days in December: 11 days

Months with the highest number of rainy days are January, February and March (17 days).
The month with the lowest number of rainy days is August (3 days).

Average sea temperature in December - Avarua District, Cook Islands
  • Average sea temperature in December: 26.8°C

The best month for swimming (with the highest average sea temperature) is February (27.8°C).
Coldest months (with the lowest average sea temperature) are August and September (24.5°C).

Average daylight in December / Average sunshine in December - Avarua District, Cook Islands
  • Average daylight in December: 13.4h

The month with the longest days is December (Average daylight: 13.4h).
The month with shortest days is June (Average daylight: 10.9h).

  • Average sunshine in December: 11h

Months with most sunshine are January, February and March (Average sunshine: 17h).
The month with least sunshine is August (Average sunshine: 3h).

Average UV index in December - Avarua District, Cook Islands
  • Average UV index in December: 12

Months with the highest UV index are January, February, March, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 6).