Arutanga
Cook Islands
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Arutanga, Cook Islands

The first month of the summer, December, is also a moderately hot month in Arutanga, Cook Islands, with average temperature varying between 23°C (73.4°F) and 29°C (84.2°F).

Temperature

In Arutanga, the average high-temperature remains equal as in November - a still warm 29°C (84.2°F). The average low-temperature, in December, is 23°C (73.4°F).

Rainfall

In Arutanga, during December, the rain falls for 12 days and regularly aggregates up to 232mm (9.1") of precipitation. Throughout the year, in Arutanga, there are 114 rainfall days, and 1984mm (78.1") of precipitation is accumulated.

Sea temperature

In Arutanga, Cook Islands, the average seawater temperature is 27°C (80.6°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

December has the longest days of the year, with an average of 13.3h of daylight.

Sunshine

The average sunshine is 12h.

UV index

January through March, October through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 12 interpret into the following advice:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. 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 Arutanga?

The average high-temperature, in December, is 29°C (84.2°F), while the average low-temperature is 23°C (73.4°F).

How much does it rain in Arutanga in December?

In Arutanga, in December, during 12 rainfall days, 232mm (9.1") of precipitation is typically accumulated.

What is the sea water temperature in December in Arutanga?

In Arutanga, Cook Islands, in December, the average water temperature is 27°C (80.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

When are the longest days in Arutanga?

December has the longest days of the year, with an average of 13.3h of daylight.

How many hours of daylight does Arutanga have in December?

In Arutanga, Cook Islands, the average length of the day in December is 13.3h.

How many hours of sunshine does Arutanga have in December?

The average sunshine in December in Arutanga is 12h.

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

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

What is the UV index reading in December in Arutanga?

In Arutanga, Cook Islands, the average daily maximum UV index in December is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in December - Arutanga, Cook Islands
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are January, February and March (30°C).
Months with the lowest average high temperature are July and August (27°C).

  • Average low temperature in December: 23°C

Months with the highest average low temperature are January, February and March (24°C).
Coldest months (with the lowest average low temperature) are July, August and September (21°C).

Average rainfall in December - Arutanga, Cook Islands
  • Average rainfall in December: 232mm

The wettest month (with the highest rainfall) is January (251mm).
The driest month (with the lowest rainfall) is July (81mm).

Average rainfall days in December - Arutanga, Cook Islands
  • Average rainfall days in December: 12 days

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

Average sea temperature in December - Arutanga, Cook Islands
  • Average sea temperature in December: 27°C

Best months for swimming (with the highest average sea temperature) are January, February, March and April (28°C).
Coldest months (with the lowest average sea temperature) are July, August, September and October (26°C).

Average daylight in December / Average sunshine in December - Arutanga, Cook Islands
  • Average daylight in December: 13.3h

The month with the longest days is December (Average daylight: 13.3h).
The month with shortest days is June (Average daylight: 11h).

  • Average sunshine in December: 12h

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

Average UV index in December - Arutanga, 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).
The month with the lowest UV index is June (UV index 6).