December weather forecast
Christmas Island, Christmas Island

As Christmas Island segues into December, the weather reverts to full wet season mode. A further increased rainfall to 211mm (8.31") is recorded for the month, second only to February. It mirrors weather conditions similar to the first quarter of the year, with a mix of warm and wet days. Being a part of the wet season, December requires visitors to pack appropriately to fully enjoy their time on the island. Just before the year ends, the Christmas Island frigatebird, a spectacle to behold, prepares for its nesting period.

Temperature

In Christmas Island, December's average high-temperature stands at a still moderately hot 28.7°C (83.7°F), closely related to the preceding month. Throughout December, Christmas Island witnesses a nighttime temperature average of 23.5°C (74.3°F).

Rainfall

In Christmas Island, during December, the rain falls for 13 days and regularly aggregates up to 211mm (8.31") of precipitation. In Christmas Island, during the entire year, the rain falls for 152 days and collects up to 2101mm (82.72") of precipitation.

Sea temperature

In Christmas Island, Christmas Island, in December, the average water temperature is 28°C (82.4°F).
Note: Water temperatures from 25°C (77°F) to 29°C (84.2°F) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.

Daylight

With an average of 12h and 42min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:25 and sunset at 18:07. On the last day of the month, sunrise is at 05:38 and sunset at 18:22 +07.

Sunshine

The average sunshine in December is 13h.

UV index

January through April, September 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 excessive health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 12 during December translates into the following recommendations:
Enforce all necessary precautions, unprotected skin might burn swiftly. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Regularly apply and reapply a broad-spectrum sunscreen with a minimum SPF 30 every two hours, or straight after swimming or an outdoor activity. Caution! Sand and water reflections can notably increase the UV radiation intensity.