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

December weather forecast and climate
Rota, Northern Mariana Islands, USA

The first month of the winter, December, is also a hot month in Rota, Northern Mariana Islands, with temperature in the range of an average low of 75.2°F (24°C) and an average high of 86°F (30°C).

Temperature

In Rota, the average high-temperature is almost the same as in November - a still tropical 86°F (30°C). The average low-temperature, in December, is 75.2°F (24°C).

Rainfall

In Rota, in December, during 22 rainfall days, 5.7" (146mm) of precipitation is typically accumulated. Throughout the year, in Rota, there are 247 rainfall days, and 94.3" (2395mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean 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 11.3h of daylight, December has the shortest days of the year.

Sunshine

In Rota, Northern Mariana Islands, the average sunshine is 5h.

UV index

With an average maximum UV index of 9, December is the month with the lowest UV index. A UV Index value of 8 to 10 symbolizes a very high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 9 in December interpret into the following advice:
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. 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.

What is the temperature in December in Rota?

The average high-temperature, in December, in Rota, is 86°F (30°C), while the average low-temperature is 75.2°F (24°C).

How many days does it rain in December in Rota?

In Rota, Northern Mariana Islands, in December, during 22 rainfall days, 5.7" (146mm) of precipitation is typically accumulated.

What is the water temperature in December in Rota?

In December, the average ocean temperature in Rota, Northern Mariana Islands, is 82.4°F (28°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Rota?

With an average of 11.3h of daylight, December has the shortest days of the year.

How many hours of daylight does Rota have in December?

The average length of the day in December in Rota, Northern Mariana Islands, is 11.3h.

How long on average sun shines in December in Rota?

In Rota, the average sunshine in December is 5h.

When is the lowest UV index in Rota?

With an average maximum UV index of 9, December is the month with the lowest UV index in Rota.

How high is the UV index in December in Rota?

In December, the average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Rota, Northern Mariana Islands, USA
  • Average high temperature in December: 86°F

Warmest months (with the highest average high temperature) are April, May, June, July, August, September, October and November (88°F).
The month with the lowest average high temperature is January (84°F).

  • Average low temperature in December: 75°F

Months with the highest average low temperature are May, June, July, August, September, October and November (77°F).
Coldest months (with the lowest average low temperature) are January, February, March, April and December (75°F).

Average rainfall in December - Rota, Northern Mariana Islands, USA
  • Average rainfall in December: 5.7"

The wettest month (with the highest rainfall) is August (14.4").
The driest month (with the lowest rainfall) is March (3.5").

Average rainfall days in December - Rota, Northern Mariana Islands, USA
  • Average rainfall days in December: 22 days

The month with the highest number of rainy days is August (23 days).
The month with the lowest number of rainy days is April (18 days).

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

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

Average daylight in December / Average sunshine in December - Rota, Northern Mariana Islands, USA
  • Average daylight in December: 11.3h

The month with the longest days is June (Average daylight: 13h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in December: 5h

Months with most sunshine are March, April, May and June (Average sunshine: 7h).
The month with least sunshine is October (Average sunshine: 4h).

Average UV index in December - Rota, 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).
The month with the lowest UV index is December (UV index 9).