December weather forecast
Saipan, Northern Mariana Islands, USA

Beautiful clear waters and white sandy beaches around the stunning Bird Island in Saipan, Northern Mariana Islands
Beautiful clear waters and white sandy beaches around the stunning Bird Island in Saipan, Northern Mariana Islands

Weather in December

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

Temperature

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

Rainfall

In Saipan, during December, the rain falls for 23 days and regularly aggregates up to 5.88" (149.4mm) of precipitation. Throughout the year, in Saipan, there are 244 rainfall days, and 83.39" (2118.2mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature in Saipan is 82.4°F (28°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) 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 shortest days of the year, with an average of 11h and 15min of daylight.
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, Northern Mariana Islands, 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

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 radiation for the average person.
Note: The average daily UV index of 9 in December transform into the following instructions:
Take special precautions, as unprotected skin can be damaged and can burn quickly. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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.
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FAQ

How many days does it rain in December in Saipan?

In Saipan, Northern Mariana Islands, in December, during 23 rainfall days, 5.88" (149.4mm) of precipitation is typically accumulated.

What is the water temperature in December in Saipan?

In Saipan, Northern Mariana Islands, in December, the average water temperature is 82.4°F (28°C). 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.

What is the month with the shortest days in Saipan?

December has the shortest days of the year in Saipan, with an average of 11h and 15min of daylight.

How many hours of daylight does Saipan have in December?

In Saipan, the average day length in December is 11h and 15min.

When are sunrise and sunset in December in Saipan?

On the first day of December in Saipan, Northern Mariana Islands, sunrise is at 6:26 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.

What is the month with the least sunshine in Saipan?

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

How many hours of sunshine does Saipan have in December?

In Saipan, Northern Mariana Islands, the average sunshine duration in December is 5h.

What are the months with the lowest UV index in Saipan?

November and December, with an average maximum UV index of 9, are months with the lowest UV index in Saipan.

What is the UV index reading in December in Saipan?

The average daily maximum UV index in December in Saipan, Northern Mariana Islands, is 9. A UV Index reading of 8 to 10 represents a very high health threat from exposure to Sun's UV rays.

Average temperature in December
Saipan, Northern Mariana Islands, USA

Average temperature in December - Saipan, Northern Mariana Islands, USA
  • Average high temperature in December: 81.4°F

The warmest month (with the highest average high temperature) is June (85°F).
The month with the lowest average high temperature is February (79.7°F).

  • Average low temperature in December: 74.1°F

The month with the highest average low temperature is May (75.5°F).
The coldest month (with the lowest average low temperature) is February (72.9°F).

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Average rainfall in December
Saipan, Northern Mariana Islands, USA

Average rainfall in December - Saipan, Northern Mariana Islands, USA
  • Average rainfall in December: 5.9"

The wettest month (with the highest rainfall) is August (12.4").
The driest month (with the least rainfall) is March (2.4").

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Average rainfall days in December
Saipan, Northern Mariana Islands, USA

Average rainfall days in December - Saipan, Northern Mariana Islands, USA
  • Average rainfall days in December: 23 days

The months with the highest number of rainy days are January and December (23 days).
The month with the least rainy days is June (17 days).

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Average sea temperature in December
Saipan, Northern Mariana Islands, USA

Average sea temperature in December - Saipan, Northern Mariana Islands, USA
  • Average sea temperature in December: 82°F

The best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (84°F).
The coldest months (with the lowest average sea temperature) are February and March (81°F).

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Average daylight in December /
Average sunshine in December
Saipan, Northern Mariana Islands, USA

Average daylight in December / Average sunshine in December - Saipan, Northern Mariana Islands, USA
  • Average daylight in December: 11h and 15min

The month with the longest days is June (Average daylight: 13h and 1min).
The month with the shortest days is December (Average daylight: 11h and 15min).

  • Average sunshine in December: 5h

The months with the most sunshine are March, April, May and June (Average sunshine: 7h).
The months with the least sunshine are August, September, October, November and December (Average sunshine: 5).

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Average UV index in December
Saipan, Northern Mariana Islands, USA

Average UV index in December - Saipan, Northern Mariana Islands, USA
  • Average UV index in December: 9

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are November and December (UV index 9).

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