Saipan
Northern Mariana Islands, USA
Long-term weather forecast
Long-term weather forecast

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 average temperature fluctuating between 81.3°F (27.4°C) and 74.1°F (23.4°C).

Temperature

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

Rainfall

In December, in Saipan, the rain falls for 23 days. Throughout December, 5.9" (149.4mm) of precipitation is accumulated. Throughout the year, in Saipan, there are 244 rainfall days, and 83.4" (2118.2mm) of precipitation is accumulated.

Ocean temperature

In Saipan, the average seawater 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.

Daylight

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

Sunshine

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

UV index

November and December, with an average maximum UV index of 9, are months with the lowest UV index. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
The daily maximum UV index of 9 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged 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. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Saipan?

The average high-temperature, in December, is 81.3°F (27.4°C), while the average low-temperature is 74.1°F (23.4°C).

How much does it rain in Saipan in December?

In Saipan, in December, during 23 rainfall days, 5.9" (149.4mm) of precipitation is typically accumulated.

What is the water temperature in December in Saipan?

In Saipan, 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?

The month with the shortest days is December, with an average of 11.2h of daylight.

How many hours of daylight does Saipan have in December?

The average length of the day in December is 11.2h.

What is the month with the least sunshine in Saipan?

Months with the least sunshine in Saipan 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 in December is 5h.

What is the month 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.

What is the UV index reading in December in Saipan?

In December, the average daily maximum UV index in Saipan is 9. A UV Index reading of 8 to 10 represents a very high hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Saipan, Northern Mariana Islands, USA
  • Average high temperature in December: 27.4°C

The warmest month (with the highest average high temperature) is June (29.4°C).
The month with the lowest average high temperature is February (26.5°C).

  • Average low temperature in December: 23.4°C

The month with the highest average low temperature is May (24.2°C).
The coldest month (with the lowest average low temperature) is February (22.7°C).

Average rainfall in December - Saipan, Northern Mariana Islands, USA
  • Average rainfall in December: 149.4mm

The wettest month (with the highest rainfall) is August (315.5mm).
The driest month (with the lowest rainfall) is March (61mm).

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 lowest number of rainy days is June (17 days).

Average sea temperature in December - Saipan, Northern Mariana Islands, USA
  • Average sea temperature in December: 28°C

Best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (29°C).
Coldest months (with the lowest average sea temperature) are February and March (27°C).

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 shortest days is December (Average daylight: 11.2h).

  • Average sunshine in December: 5h

Months with most sunshine are March, April, May and June (Average sunshine: 7h).
Months with 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).