December weather forecast
Avarua District, Cook Islands

In December, the tropical surroundings of Avarua District, Cook Islands are heightened by further increase in temperature and rainfall. A rise to 229mm (9.02") of rainfall over 11 days is countered by an increase in sunshine hours from November. Modestly high temperatures, between 22°C (71.6°F) to 28°C (82.4°F), add warmth to the bustling holiday season. With the most number of daylight hours in the year, December certainly maximizes the brightness and warmth of the tropical city. Balancing all these aspects, the Avaruan weather exudes a radiant and inviting atmosphere throughout the month.

Temperature

The introduction of December in Avarua District, Cook Islands, sees an average high-temperature of a still moderately hot 28°C (82.4°F), hardly deviating from November. During the nights in December, Avarua District observes an average low-temperature of 22°C (71.6°F).

Rainfall

In Avarua District, during December, the rain falls for 11 days and regularly aggregates up to 229mm (9.02") of precipitation. Throughout the year, there are 114 rainfall days, and 2190mm (86.22") of precipitation is accumulated.

Sea temperature

In Avarua District, in December, the average water temperature is 26.8°C (80.2°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The month with the longest days is December, with an average of 13h and 24min of daylight.
On the first day of December, sunrise is at 05:48 and sunset at 19:08. On the last day of the month, sunrise is at 06:00 and sunset at 19:24 -10.

Sunshine

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

UV index

January through March, October through December, with an average maximum UV index of 12, are months with the highest UV index in Avarua District. A UV Index value of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 12 during December translates into the following guidance:
Employ every crucial safety step. Those with fair skin could experience burns in a matter of minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.