Northern Mariana Islands
Home Northern Mariana Islands Weather in September

Northern Mariana Islands weather in September

Are you planning a trip to Northern Mariana Islands in September and wondering what kind of weather to expect? Look no further than this page for all the information you need.

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

The weather conditions in Northern Mariana Islands in September are generally poor.

You can expect warm maximum average daytime temperatures of around 30°C (85°F) and nighttime temperatures around 27°C (80°F) in Garapan. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

September is a very rainy month with an average rainfall of around 322mm (13 inches) in Garapan.

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.

Weather conditions Weather
Temperatures
Precipitation
Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches 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 (85°F), minimum nighttime temperatures around 27°C (80°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Garapan
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
30°C / 85°F 
27°C / 80°F 
352mm / 14" 
21 days 
poor 
September September
30°C / 85°F 
27°C / 80°F 
322mm / 13" 
19 days 
poor 
October   >> October
>>  
30°C / 85°F 
27°C / 80°F 
313mm / 12" 
22 days 
poor 
Climate in Garapan

Average weather in Saipan

In September Saipan generally has high temperatures with maximum daytime temperatures around 30°C (85°F), minimum nighttime temperatures around 27°C (80°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Saipan
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
30°C / 85°F 
27°C / 80°F 
352mm / 14" 
21 days 
poor 
September September
30°C / 85°F 
27°C / 80°F 
322mm / 13" 
19 days 
poor 
October   >> October
>>  
30°C / 85°F 
27°C / 80°F 
314mm / 12" 
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 go to Northern Mariana Islands?

In our opinion September is not the best time to visit Northern Mariana Islands with commonly 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 worst months are July, August, September and October that can have poor weather conditions.

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.

  • January      
  • February      
  • March      
  • April      
  • May      
  • June      
  • July      
  • August      
  • September      
  • October      
  • November      
  • December      

    • 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.