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Usual weather in Northern Mariana Islands

Do you need to know, when is the best time to go to Northern Mariana Islands? Then you should take a look here, what weather you can expect there during the year.

Home - Australia & Pacific - Northern Mariana Islands

What weather to expect in Northern Mariana Islands

The climate of Northern Mariana Islands is tropical marine. Weather is moderated by northeast winds. There are only little seasonal variations of temperature. Dry season is from December to June, rainy season is from July to October. There can be typhoons in November.

When speaking about the usual weather in this state, the information is relevant for example for these popular places: Dive sites of Saipan, Garapan, Northern Islands Municipality, Rota, Saipan, Tinian.

Let's look now what weather you can expect in the area around the capital and in many other cities. The warmest month here is September, the average maximum temperature is 31.8 ℃ (89.24 ℉). The average minimum temperature in this month is 26 ℃ (78.8 ℉). The coldest month here is December, the average maximum temperature is 30 ℃ (86 ℉). The average minimum temperature in this month is 25.2 ℃ (77.36 ℉).

When travelling to some places in Northern Mariana Islands, always consider the altitude of the the place as well. The highest point here is unnamed elevation on Agrihan (965 m) and the lowest point is Pacific Ocean (0 m). So there are not big differences in altitudes in this country. But the altitude affects the weather even so. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)

Please, keep in mind, that this is not a weather forecast, but the information about the usual weather (average). This should help you to decide, when is the best time to go to Northern Mariana Islands. Read more details about the typical weather there in all individual months below:

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


January

Typical (usual) weather in Northern Mariana Islands in January is this: The average highest temperature in Northern Mariana Islands in January is 30.8 ℃ (87.44 ℉). The average lowest temperature is 24.3 ℃ (75.74 ℉). At the beginning of January you can expect lower temperatures, the average highest temperature is around 30.4 ℃ (86.72 ℉). At the end of January you can expect lower temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). The average rainfall is 115.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:20 (hours and minutes), in the middle of the month 11:24 and at the end of the month 11:32.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

February

Typical (usual) weather in Northern Mariana Islands in February is this: The average highest temperature in Northern Mariana Islands in February is 30.4 ℃ (86.72 ℉). The average lowest temperature is 24.4 ℃ (75.92 ℉). At the beginning of February you can expect higher temperatures, the average highest temperature is around 30.6 ℃ (87.08 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 30.55 ℃ (86.99 ℉). The average rainfall is 96.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:32 (hours and minutes), in the middle of the month 11:41 and at the end of the month 11:52.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

March

Typical (usual) weather in Northern Mariana Islands in March is this: The average highest temperature in Northern Mariana Islands in March is 30.7 ℃ (87.26 ℉). The average lowest temperature is 24.5 ℃ (76.1 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 30.55 ℃ (86.99 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 31 ℃ (87.8 ℉). The average rainfall is 75 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:52 (hours and minutes), in the middle of the month 12:03 and at the end of the month 12:15.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

April

Typical (usual) weather in Northern Mariana Islands in April is this: The average highest temperature in Northern Mariana Islands in April is 31.3 ℃ (88.34 ℉). The average lowest temperature is 24.9 ℃ (76.82 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 31 ℃ (87.8 ℉). At the end of April you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). The average rainfall is 101.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:15 (hours and minutes), in the middle of the month 12:26 and at the end of the month 12:36.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

May

Typical (usual) weather in Northern Mariana Islands in May is this: The average highest temperature in Northern Mariana Islands in May is 31.3 ℃ (88.34 ℉). The average lowest temperature is 25 ℃ (77 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). The average rainfall is 152.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:36 (hours and minutes), in the middle of the month 12:44 and at the end of the month 12:51.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

June

Typical (usual) weather in Northern Mariana Islands in June is this: The average highest temperature in Northern Mariana Islands in June is 31.4 ℃ (88.52 ℉). The average lowest temperature is 26.1 ℃ (78.98 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). At the end of June you can expect lower temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). The average rainfall is 164.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:51 (hours and minutes), in the middle of the month 12:54 and at the end of the month 12:54.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

July

Typical (usual) weather in Northern Mariana Islands in July is this: The average highest temperature in Northern Mariana Islands in July is 31.3 ℃ (88.34 ℉). The average lowest temperature is 25.9 ℃ (78.62 ℉). At the beginning of July you can expect higher temperatures, the average highest temperature is around 31.35 ℃ (88.43 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 31.45 ℃ (88.61 ℉). The average rainfall is 268.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:54 (hours and minutes), in the middle of the month 12:51 and at the end of the month 12:44.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

August

Typical (usual) weather in Northern Mariana Islands in August is this: The average highest temperature in Northern Mariana Islands in August is 31.6 ℃ (88.88 ℉). The average lowest temperature is 24.9 ℃ (76.82 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 31.45 ℃ (88.61 ℉). At the end of August you can expect higher temperatures, the average highest temperature is around 31.7 ℃ (89.06 ℉). The average rainfall is 344.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:44 (hours and minutes), in the middle of the month 12:35 and at the end of the month 12:25.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

September

Typical (usual) weather in Northern Mariana Islands in September is this: The average highest temperature in Northern Mariana Islands in September is 31.8 ℃ (89.24 ℉). The average lowest temperature is 26 ℃ (78.8 ℉). At the beginning of September you can expect lower temperatures, the average highest temperature is around 31.7 ℃ (89.06 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 31.8 ℃ (89.24 ℉). The average rainfall is 346 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:25 (hours and minutes), in the middle of the month 12:14 and at the end of the month 12:03.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

October

Typical (usual) weather in Northern Mariana Islands in October is this: The average highest temperature in Northern Mariana Islands in October is 31.8 ℃ (89.24 ℉). The average lowest temperature is 25.5 ℃ (77.9 ℉). At the beginning of October you can expect lower temperatures, the average highest temperature is around 31.8 ℃ (89.24 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). The average rainfall is 304.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:03 (hours and minutes), in the middle of the month 11:52 and at the end of the month 11:41.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

November

Typical (usual) weather in Northern Mariana Islands in November is this: The average highest temperature in Northern Mariana Islands in November is 30.8 ℃ (87.44 ℉). The average lowest temperature is 24.8 ℃ (76.64 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 30.4 ℃ (86.72 ℉). The average rainfall is 205 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:41 (hours and minutes), in the middle of the month 11:32 and at the end of the month 11:25.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.

December

Typical (usual) weather in Northern Mariana Islands in December is this: The average highest temperature in Northern Mariana Islands in December is 30 ℃ (86 ℉). The average lowest temperature is 25.2 ℃ (77.36 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 30.4 ℃ (86.72 ℉). At the end of December you can expect higher temperatures, the average highest temperature is around 30.4 ℃ (86.72 ℉). The average rainfall is 139.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:25 (hours and minutes), in the middle of the month 11:20 and at the end of the month 11:19.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes.



When you read about the number of mm of rainfall, you should know this: Light rain is when the precipitation rate is less than 2.5 mm (0.1 in) per hour. For moderate rain this number is between 2.5 mm and 10 mm (0.4 in), for heavy rain it is 10 mm - 50 mm (2.0 in). Violent rain has this number higher than 50 mm per hour.


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