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Northern Mariana Islands

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Northern Mariana Islands Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-10

Northern Mariana Islands year round climate

  • Spring (March–May): Average 26.6–28.2°C, plenty of sunshine, warm and comfortable, extremely low rainfall, one of the driest periods of the year. Air humidity is relatively stable. Common activities: Beach relaxation, snorkeling, water activities, island exploration. Recommended attire: Light and breathable short-sleeved shirts and pants, swimwear, sun hat, sunglasses.
  • Summer (June–August): Average 28.6–28.7°C, hot with strong sunshine, higher humidity, rainfall slightly increases compared to spring but remains low. Common activities: Early morning or evening outdoor activities, various water sports, exploring sea caves or jungle trails. Recommended attire: Moisture-wicking light clothing, loose shorts, T-shirts, swimwear, sunscreen, sandals.
  • Autumn (September–November): Average 27.9–28.3°C, temperatures remain warm, but this period enters the month with the highest annual rainfall (September), air humidity significantly increases, with occasional showers. Common activities: Water activities are still possible, but it's advisable to check the weather forecast; also visit historical sites or enjoy resort facilities. Recommended attire: Quick-dry light clothing, sandals, light rain gear (such as an umbrella or thin raincoat).
  • Winter (December–February): Average 26.2–28.1°C, weather is cool and pleasant, making it the most comfortable season of the year, with plenty of sunshine, very little rainfall, and lower humidity. Common activities: Best suited for various outdoor activities such as scuba diving, sailing, golf, beach strolling. Recommended attire: Light long-sleeved or short-sleeved clothing, shorts, long skirts, swimwear, light jacket (for evenings or indoors).

Northern Mariana Islands climatological average

Annual average temperature: approx. 27.8°C / Annual rainfall: approx. 68 mm / Summer humidity: 75-85% / Rainiest month: September

Northern Mariana Islands monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
26.8°C
1.2
February
26.2°C
1.1
March
26.6°C
1.9
April
27.4°C
2
May
28.2°C
2.2
June
28.7°C
2.7
July
28.7°C
4.7
August
28.6°C
12.4
September
28.2°C
17.7
October
27.9°C
16.2
November
28.3°C
3.6
December
28.1°C
2.8

Northern Mariana Islands weather for the next seven days

6/5
Friday
Moderate rain
28.5°C/27.3°C
6/6
Saturday
Patchy rain nearby
28.4°C/27.8°C
6/7
Sunday
Patchy rain nearby
28.4°C/27.8°C
6/8
Monday
Patchy rain nearby
28.2°C/27.8°C
6/9
Tuesday
Patchy rain nearby
28.9°C/27.6°C
6/10
Wednesday
Sunny
28.5°C/27.8°C
6/11
Thursday
Patchy rain nearby
28.4°C/27.6°C

Northern Mariana Islands Frequently Asked Questions and Useful Information for Travel

Is it expensive to visit the Northern Mariana Islands?

A getaway to the Northern Mariana Islands can be surprisingly affordable. By bundling your flights, hotels, and car rentals into a travel package, you can enjoy the best deals for your vacation.

How do I get to the Northern Mariana Islands?

To reach the Northern Mariana Islands, you will most likely fly into Saipan International Airport SPN. Flights from the U.S. typically involve at least one stop, often in Guam or a major Asian hub. Direct flights are available from nearby Asian cities. Once you arrive, inter-island flights can take you to other islands like Rota or Tinian.

Is Saipan a good tourist destination?

Yes, Saipan is a worthwhile destination known for its beautiful natural scenery, including stunning beaches and diving spots like The Grotto. It also features historical sites from World War II, offering a unique escape for those interested in outdoor activities like snorkeling, diving, and hiking.

Who should visit Saipan?

Saipan is ideal for divers drawn to its rich marine life, reefs, and underwater caves like The Grotto. Visitors who enjoy hiking through lush jungles, exploring pristine beaches, and discovering natural attractions like Managaha Island will also find it appealing. History buffs will appreciate exploring WWII battleground sites such as the Last Command Post and Banzai Cliff.

Can US citizens buy land in the Northern Mariana Islands?

In general, U.S. citizens cannot buy land in the Northern Mariana Islands due to constitutional restrictions. The CNMI Constitution limits the acquisition of permanent interests in real property to individuals of Northern Marianas descent. U.S. citizens who are not of Northern Marianas descent are prohibited from owning land under these rules.