Northern Mariana Islands Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Northern Mariana Islands in September.

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Garapan Saipan Rota

Are you planning a trip a to Northern Mariana Islands in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Northern Mariana Islands in September

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

Temperatures

You can expect warm maximum daytime temperatures of around 30°C (86°F) and nighttime temperatures around 27°C (81°F) 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.

For a closer look at conditions across Northern Mariana Islands, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Chalan Kanoa with an average of 321 mm (13 in) to heavy rainfall in Rota with 334 mm (13 in).

Explore Northern Mariana Islands by month

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Best Places to Visit in Northern Mariana Islands in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Northern Mariana Islands.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Northern Mariana Islands

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

Temperature range in Northern Mariana Islands (September)

Precipitation variation in Northern Mariana Islands (September)

Garapan

In September Garapan generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly rainfall
352 mm (14 in)
322 mm (13 in)
313 mm (12 in)
Monthly rainy days
21 days
19 days
22 days
Weather conditions
poor
poor
poor
Climate in Garapan →

Saipan

In September Saipan generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly rainfall
352 mm (14 in)
322 mm (13 in)
314 mm (12 in)
Monthly rainy days
21 days
19 days
22 days
Weather conditions
poor
poor
poor
Climate in Saipan →

Rota

In September Rota generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
27°C (81°F)
Monthly rainfall
358 mm (14 in)
334 mm (13 in)
306 mm (12 in)
Monthly rainy days
21 days
19 days
22 days
Weather conditions
poor
poor
poor
Climate in Rota →

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

Popular cities in September

Day & night temperatures, rainfall and average weather in Northern Mariana Islands in September.

City Weather Day temp Night temp Rainfall
Garapan 30°C (86°F) 27°C (81°F) 322 mm (13 in)
Saipan 30°C (86°F) 27°C (81°F) 322 mm (13 in)
Rota 30°C (86°F) 26°C (79°F) 334 mm (13 in)

Northern Mariana Islands weather in September: frequently asked questions

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

Northern Mariana Islands typically experiences poor weather in September, part of the season. Daytime highs in Garapan average around 30°C (86°F), and temperatures drop to about 27°C (81°F) at night.

What is the average temperature in Northern Mariana Islands in September?

Garapan averages a daytime maximum of 30°C (86°F) in September, with overnight lows close to 27°C (81°F).

Does Northern Mariana Islands get a lot of rain in September?

Expect plenty of rainfall. Garapan records an average of 322 mm (13 in) in September, putting it among the wetter months for Northern Mariana Islands.

Is September a Good 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.

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 travel conditions. Find out where to go with our weather planner.