The best times to visit the United States Commonwealth of the Northern Mariana Islands for ideal weather are
January 15th to December 30th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
the United States Commonwealth of the Northern Mariana Islands Travel Guide
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Weather in the United States Commonwealth of the Northern Mariana Islands
Temperature
Average temperatures in the United States Commonwealth of the Northern Mariana Islands vary barely at all. Considering humidity, temperatures feel hot all year with a very low chance of rain throughout the year. The area is less temperate than some — in the 33rd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit the United States Commonwealth of the Northern Mariana Islands, the hottest months are June, May, and then July. See average monthly temperatures below. The warmest time of year is generally mid June where highs are regularly around 87.3°F (30.7°C) with temperatures rarely dropping below 79.2°F (26.2°C) at night.
the United States Commonwealth of the Northern Mariana Islands Temperatures (Fahrenheit)
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the United States Commonwealth of the Northern Mariana Islands Temperatures (Celsius)
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“Feels-Like” Temperatures
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
the United States Commonwealth of the Northern Mariana Islands Perceived Temperature (F)
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the United States Commonwealth of the Northern Mariana Islands Perceived Temperature (C)
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Average the United States Commonwealth of the Northern Mariana Islands Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 83.4 | 80.1 | 76.6 |
| Feb | 83.1 | 79.5 | 75.8 |
| Mar | 83.7 | 80.2 | 76.5 |
| Apr | 85.2 | 81.8 | 77.8 |
| May | 86.4 | 82.9 | 78.7 |
| Jun | 86.9 | 83.4 | 78.9 |
| Jul | 86 | 82.5 | 78.2 |
| Aug | 85.7 | 81.9 | 77.7 |
| Sep | 85.7 | 81.8 | 77.8 |
| Oct | 84.9 | 81.5 | 77.7 |
| Nov | 85.6 | 82.3 | 78.7 |
| Dec | 84.6 | 81.3 | 77.8 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 28.6 | 26.7 | 24.8 |
| Feb | 28.4 | 26.4 | 24.3 |
| Mar | 28.7 | 26.8 | 24.7 |
| Apr | 29.6 | 27.7 | 25.4 |
| May | 30.2 | 28.3 | 25.9 |
| Jun | 30.5 | 28.6 | 26.1 |
| Jul | 30 | 28.1 | 25.7 |
| Aug | 29.8 | 27.7 | 25.4 |
| Sep | 29.8 | 27.7 | 25.4 |
| Oct | 29.4 | 27.5 | 25.4 |
| Nov | 29.8 | 27.9 | 25.9 |
| Dec | 29.2 | 27.4 | 25.4 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in the United States Commonwealth of the Northern Mariana Islands are March, April, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late April. For example, on the week of April 23rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid to late September with an average of 1 days of significant precipitation the week of September 17th.
When can you find snow in the United States Commonwealth of the Northern Mariana Islands? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in the United States Commonwealth of the Northern Mariana Islands.
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Snow on the Ground
The graph below shows the average snow on the ground in the United States Commonwealth of the Northern Mariana Islands (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 7% | 0 | 1 |
| Feb | 5% | 0 | 0.5 |
| Mar | 4% | 0 | 0.6 |
| Apr | 4% | 0 | 0.6 |
| May | 8% | 0 | 1 |
| Jun | 8% | 0 | 1 |
| Jul | 9% | 0 | 1.4 |
| Aug | 11% | 0 | 2.3 |
| Sep | 12% | 0 | 2.3 |
| Oct | 11% | 0 | 2.3 |
| Nov | 8% | 0 | 1 |
| Dec | 6% | 0 | 0.7 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 7 | 0 | 2.5 |
| Feb | 5 | 0 | 1.3 |
| Mar | 4 | 0 | 1.5 |
| Apr | 4 | 0 | 1.5 |
| May | 8 | 0 | 2.5 |
| Jun | 8 | 0 | 2.5 |
| Jul | 9 | 0 | 3.6 |
| Aug | 11 | 0 | 5.8 |
| Sep | 12 | 0 | 5.8 |
| Oct | 11 | 0 | 5.8 |
| Nov | 8 | 0 | 2.5 |
| Dec | 6 | 0 | 1.8 |
Humidity and Wind
the United States Commonwealth of the Northern Mariana Islands has some very humid months, and above average humidity throughout the year. The least humid month is March (68.8% relative humidity), and the most humid month is September (78.6%).
Wind in the United States Commonwealth of the Northern Mariana Islands is usually moderate. The windiest month is March, followed by January and February. March’s average wind speed of around 11.6 knots (13.4 MPH or 21.5 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid January where average top sustained speeds reach 19.9 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in the United States Commonwealth of the Northern Mariana Islands.
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Wind
The graph below shows wind speed (max and average) in knots.
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Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
| Month | Avg. Wind | Avg. Wind Feel | Sustained High Wind | High Wind Feel |
| Jan | 10.8 | Gentle breeze | 15.4 | Significant breeze |
| Feb | 10.6 | Gentle breeze | 14.9 | Significant breeze |
| Mar | 11.6 | Significant breeze | 16 | Significant breeze |
| Apr | 10 | Gentle breeze | 14.3 | Significant breeze |
| May | 8.5 | Gentle breeze | 13 | Significant breeze |
| Jun | 8.1 | Gentle breeze | 12.5 | Significant breeze |
| Jul | 6.8 | Light breeze | 11.7 | Significant breeze |
| Aug | 6 | Light breeze | 11.1 | Significant breeze |
| Sep | 6.7 | Light breeze | 11.9 | Significant breeze |
| Oct | 7.8 | Gentle breeze | 12.8 | Significant breeze |
| Nov | 9.8 | Gentle breeze | 13.9 | Significant breeze |
| Dec | 10.3 | Gentle breeze | 14.4 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 72.3% |
| Feb | 70.3% |
| Mar | 68.8% |
| Apr | 69.3% |
| May | 71.3% |
| Jun | 71.4% |
| Jul | 75.1% |
| Aug | 77.7% |
| Sep | 78.6% |
| Oct | 78.2% |
| Nov | 73.5% |
| Dec | 72.2% |
Is it Safe to Travel to the United States Commonwealth of the Northern Mariana Islands?
Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the Northern Marianas; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 11, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in the United States Commonwealth of the Northern Mariana Islands is July, followed by December and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit the United States Commonwealth of the Northern Mariana Islands in October. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
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Overall the United States Commonwealth of the Northern Mariana Islands Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 87.3°F (30.7°C) and 82.9°F (28.3°C) with warmer temperatures in the later months. Rain is rare with 1 to 2 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with about 3 days of precipitation per month. June – August is the busiest season for tourism in the United States Commonwealth of the Northern Mariana Islands, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 86.4°F (30.2°C) and 84.6°F (29.2°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is perfect this time of year in the United States Commonwealth of the Northern Mariana Islands to be enjoyable for warm weather travelers. The average high during this season is between 85°F (29.4°C) and 83°F (28.3°C). On average, it rains or snows a smalll amount: consistently 2 times per month. These times of year are the second busiest with tourists.
Best Times to Travel › the United States Commonwealth of the Northern Mariana Islands