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Northern Mariana Islands weather in September

Planning a getaway to Northern Mariana Islands this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Northern Mariana Islands in September?

September in Northern Mariana Islands generally has warm temperatures, with heavy precipitation.

You can expect warm maximum daytime temperatures of around 30°C and nighttime temperatures around 27°C in Garapan. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

September is a very rainy month with an average rainfall of around 322 mm in Garapan.

For a closer look at September's conditions in Northern Mariana Islands, see the map below. For a more detailed look at Northern Mariana Islands's yearly weather, check out our Northern Mariana Islands climate page.

Where to go in Northern Mariana Islands in September

Find the average weather conditions in September for the most popular destinations in Northern Mariana Islands on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Northern Mariana Islands

What is the weather like in September for the 2 most popular destinations in Northern Mariana Islands?

Average weather in Garapan

In September Garapan generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and heavy monthly rainfall. So on average the conditions are poor that month.

Garapan
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
27°C 
352 mm 
21 days 
poor 
30°C 
27°C 
322 mm 
19 days 
poor 
October   >> October
>>  
30°C 
27°C 
313 mm 
22 days 
poor 
Climate in Garapan

Average weather in Saipan

In September Saipan generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and heavy monthly rainfall. So on average the conditions are poor that month.

Saipan
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
27°C 
352 mm 
21 days 
poor 
30°C 
27°C 
322 mm 
19 days 
poor 
October   >> October
>>  
30°C 
27°C 
314 mm 
22 days 
poor 
Climate in Saipan

Is your destination not in the list? Have a look at other destinations in Northern Mariana Islands.

Is September the best time to visit Northern Mariana Islands?

In our view, September might not be the best time to travel to Northern Mariana Islands with often poor weather in Garapan.

On average, the best time to visit Northern Mariana Islands is in January, February, March, April, May and December with generally perfect weather in Garapan. The weather in July, August, September and October, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Northern Mariana Islands. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Northern Mariana Islands? Get detailed historical weather averages for many cities in Northern Mariana Islands.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.