December weather forecast
Northern Mariana Islands, USA

December in the Northern Mariana Islands welcomes the dry season, characterized by more moderate rainfall and stable weather conditions throughout the territory. The islands maintain a consistency in climate, devoid of major variations in weather among different locations.

Temperatures in December range from 72°F (22.2°C) to 75°F (23.9°C), marking the beginning of the coldest period of the year in the Northern Mariana Islands. The rainfall continues to decrease, and storms or hurricanes become increasingly rare, signifying a definitive break from the wet season's more unpredictable weather.

Comparing December to November, the reduction in temperature and continued decrease in rainfall illustrate the full onset of the dry season. Moving forward into January, these patterns persist, as the islands settle into the dry season's more temperate and consistent climate. December's weather, with its cooler temperatures and more stable conditions, sets the stage for the enjoyable and predictable weather patterns that define the Northern Mariana Islands during the dry season.

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• Saipan - December »
  With an average of 11h and 12min of daylight, December has the shortest days of the year in Saipan, Northern Mariana Islands. The months with the least sunshine are August through December, with an average of 5h of sunshine.
• Rota - December »
  In Rota, Northern Mariana Islands, in December, during 22 rainfall days, 5.75" (146mm) of precipitation is typically accumulated. In Rota in December, the average water temperature is 82.4°F (28°C).
• Tinian International Airport - December »
  With an average of 11h and 18min of daylight, December has the shortest days of the year in Tinian International Airport, Northern Mariana Islands. December in Tinian International Airport, Northern Mariana Islands, notes an average high-temperature of a still tropical 86°F (30°C), aligning with the previous month's conditions.