December weather forecast and climate
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
The first month of the winter, December, is also a moderately hot month in Saipan, Northern Mariana Islands, 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 relatively the same as in November - a still moderately hot 81.3°F (27.4°C). The average low-temperature, in Saipan, is 74.1°F (23.4°C).

Rainfall

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

Ocean temperature

In Saipan, the average seawater temperature 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

With an average of 11.2h of daylight, December has the shortest days of the year in Saipan.

Sunshine

Months with the least sunshine in Saipan are August through December, with an average of 5h of 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 vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 9 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Saipan?

In December, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 74.1°F (23.4°C).

How many days does it rain in December in Saipan?

In Saipan, during December, the rain falls for 23 days and regularly aggregates up to 5.88" (149.4mm) of precipitation.

What is the ocean temperature in December in Saipan?

In Saipan, the average seawater temperature in December is 82.4°F (28°C). 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.

What is the month with the shortest days in Saipan?

December has the shortest days of the year in Saipan, with an average of 11.2h of daylight.

What is the average length of the day in December in Saipan?

In Saipan, Northern Mariana Islands, the average length of the day in December is 11.2h.

What is the month with the least sunshine in Saipan?

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

How long on average sun shines in December in Saipan?

The average sunshine in December in Saipan, Northern Mariana Islands, is 5h.

What is the month with the lowest UV index in Saipan?

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

What is the UV index intensity in December in Saipan?

In Saipan, Northern Mariana Islands, the average daily maximum UV index in December is 9. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays.
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).

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").

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

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).

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).

Average daylight in December / Average sunshine in December - Saipan, Northern Mariana Islands, USA
  • Average daylight in December: 11.2h

The month with the longest days is June (Average daylight: 13h).
The month with the shortest days is December (Average daylight: 11.2h).

  • Average sunshine in December: 5h

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

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

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