December weather forecast
Saipan, Northern Mariana Islands, USA

December, the first month of the winter in Saipan, is also a moderately hot month, with an average temperature ranging between min 74.1°F (23.4°C) and max 81.3°F (27.4°C).

Temperature

In Saipan, the average high-temperature in December is almost the same as in November - a still warm 81.3°F (27.4°C). In December, the average low-temperature is 74.1°F (23.4°C).

Rainfall

In Saipan, in December, during 23 rainfall days, 5.87" (149mm) of precipitation is typically accumulated. Throughout the year, in Saipan, there are 244 rainfall days, and 83.39" (2118mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature is 82.4°F (28°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

With an average of 11h and 15min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:26 am and sunset at 5:44 pm. On the last day of December, in Saipan, sunrise is at 6:42 am and sunset at 5:56 pm ChST.

Sunshine

August through December, with an average of 5h of sunshine, are months with the least sunshine in Saipan, Northern Mariana Islands.

UV index

November and December, with an average maximum UV index of 9, are months with the lowest UV index. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 9 in December transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 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. 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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.