Climate and Average Weather in Northern Mariana Islands
The Northern Mariana Islands have a tropical rainforest climate, where there is a dry season and a wet period with significant amounts of rainfall. The dry season begins in December and continues into June. During this period, there is less precipitation than during the rainy season, which lasts from July through November. The months of August and September are the wettest months of the year, averaging 300 mm to almost 400 mm.The Northern Mariana Islands lie in an area where tropical cyclones can occur. These form over the Pacific Ocean in the second half of the year and can occasionally come near the Northern Mariana Islands. The hurricane season is approximately from June to December, but cyclones can occur outside of this period. The winds during cyclones can be enormously powerful, with devastating consequences.
The best time to go to the Northern Mariana Islands is from January to May. These are the months with the least amounts of rain and the smallest chance of hurricanes.
Are you interested in more detailed weather and climate information for various cities in Northern Mariana Islands?
Please select the city you plan to visit, or one closest to your destination. For each selected city, you will see the following graphs:
1. Yearly average minimum and maximum temperatures
2. Monthly averages of precipitation throughout the year (rainfall, snow etc)
3. Monthly average hours of sunshine throughout the year
Additionally, some pages provide historical weather data such as humidity, wind speed, and water temperature.