December weather forecast
Saipan, Northern Mariana Islands, USA

In December, Saipan's weather takes on a more tranquil demeanor as the year ends. Rainfall estimates at about 5.9" (150mm), setting a significantly lower level than in previous months. The city registers temperatures varying from a low of 74.1°F (23.4°C) to a high of 81.4°F (27.4°C), presenting fairly pleasant conditions. As January begins anew, the cycle continues in the tropical climate of Saipan.

Temperature

December's weather in Saipan displays an average high-temperature of a still moderately hot 81.3°F (27.4°C), slightly varied from November's 83.3°F (28.5°C). A mean low-temperature of 74.1°F (23.4°C) is anticipated during the month of December, a slight step down from the daytime high.

Rainfall

In Saipan, during December, the rain falls for 23 days and regularly aggregates up to 5.87" (149mm) of precipitation. In Saipan, during the entire year, the rain falls for 244 days and collects up to 83.39" (2118mm) of precipitation.

Ocean temperature

In December, the average ocean temperature is 82.4°F (28°C).
Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

The month with the shortest days is December, with an average of 11h and 12min of daylight.
On the first day of December, sunrise is at 6:27 am and sunset at 5:44 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 5:57 pm ChST.

Sunshine

August through December, with an average of 5h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are November and December, with an average maximum UV index of 9. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 9 in December translates into this advice:
Be proactive in protecting yourself; skin and eyes can be harmed if left unprotected. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Broad-spectrum sunscreen with an SPF of 30 or more should be applied liberally every two hours and directly after outdoor activities or swimming. Caution! Sand and water reflections can notably increase the UV radiation intensity.