September weather forecast
Tinian International Airport, Northern Mariana Islands, USA

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Weather in September

September follows a similar trend to August, however, records the highest rainfall for the year at 12.8" (325mm) across 20 days. Frequently occurring rains don't hinder the abundant sunshine hours, proving the city's tropical meteorological characteristics. Steady warm temperatures continue contributing to the region's appeal. The sea temperature begins to descend slowly, though still remaining warm, providing a refreshing contrast. Abundant rainfall may bring occasional interruption to outdoor activities.

Temperature

Tinian International Airport sees its peak of temperatures during June through October, with an average high-temperature of 87.8°F (31°C).

Rainfall

The month with the most rainfall is September, when the rain falls for 20 days and typically aggregates up to 12.8" (325mm) of precipitation.

Ocean temperature

In September, the average ocean temperature in Tinian International Airport is 84.7°F (29.3°C).
Note: For activities such as swimming and diving, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 6:05 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:07 pm ChST.

Sunshine

The months with the least sunshine in Tinian International Airport are August through December, with an average of 5h of sunshine.

UV index

The months with the highest UV index in Tinian International Airport are February through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 12 suggests this advice:
Adopt all important safety measures, unprotected skin may burn rapidly. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. A sunscreen boasting a minimum SPF of 30 should be generously applied and reapplied even on cloudy days, post swim or outdoor exercise. Be on guard! The reflective nature of sand and water boosts UV exposure.
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Frequently asked questions

What month is the hottest in Tinian International Airport?

June through October mark Tinian International Airport's peak of temperatures, averaging a high-temperature of 87.8°F (31°C).

How hot is it in Tinian International Airport in September?

In September, in Tinian International Airport, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 77°F (25°C).

What is the wettest month in Tinian International Airport?

September is the month with the most rainfall in Tinian International Airport, Northern Mariana Islands. Rain falls for 20 days and accumulates 12.8" (325mm) of precipitation.

How much does it rain in Tinian International Airport in September?

In Tinian International Airport, Northern Mariana Islands, in September, it is raining for 20 days, with typically 12.8" (325mm) of accumulated precipitation.

What is the water temperature in September in Tinian International Airport?

In Tinian International Airport, Northern Mariana Islands, the average seawater temperature in September is 84.7°F (29.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Tinian International Airport have in September?

In Tinian International Airport, the average day length in September is 12h and 13min.

When are sunrise and sunset in September in Tinian International Airport?

In September, on the first day of the month, sunrise is at 6:05 am and sunset at 6:29 pm. On the last day of the month, in Tinian International Airport, sunrise is at 6:07 am and sunset at 6:07 pm ChST.

What is the month with the least sunshine in Tinian International Airport?

August through December, with an average of 5h of sunshine, are months with the least sunshine in Tinian International Airport.

How many hours of sunshine does Tinian International Airport have in September?

The average sunshine duration in September in Tinian International Airport, Northern Mariana Islands, is 5h.

What is the month with the highest UV index in Tinian International Airport?

February through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index intensity in September in Tinian International Airport?

In Tinian International Airport, Northern Mariana Islands, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from unsafe exposure to Sun's UV rays.
Average low temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Tinian International Airport, Northern Mariana Islands, USA

Average temperature in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average high temperature in September: 88°F

The warmest months (with the highest average high temperature) are June, July, August, September and October (88°F).
The months with the lowest average high temperature are January, February and March (84°F).

  • Average low temperature in September: 77°F

The months with the highest average low temperature are May, June, July, August, September, October and November (77°F).
The coldest months (with the lowest average low temperature) are February and March (73°F).

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Average rainfall in September
Tinian International Airport, Northern Mariana Islands, USA

Average rainfall in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average rainfall in September: 12.8"

The wettest month (with the highest rainfall) is September (12.8").
The driest month (with the least rainfall) is February (2.9").

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Average rainfall days in September
Tinian International Airport, Northern Mariana Islands, USA

Average rainfall days in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average rainfall days in September: 20 days

The month with the highest number of rainy days is August (23 days).
The month with the least rainy days is April (18 days).

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Average sea temperature in September
Tinian International Airport, Northern Mariana Islands, USA

Average sea temperature in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average sea temperature in September: 84.8°F

The best month for swimming (with the highest average sea temperature) is July (85.4°F).
The coldest months (with the lowest average sea temperature) are January, February and March (82°F).

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Average daylight in September /
Average sunshine in September
Tinian International Airport, Northern Mariana Islands, USA

Average daylight in September / Average sunshine in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 5h

The months with the most sunshine are March, April, May and June (Average sunshine: 7h).
The months with the least sunshine are August, September, October, November and December (Average sunshine: 5h).

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Average UV index in September
Tinian International Airport, Northern Mariana Islands, USA

Average UV index in September - Tinian International Airport, Northern Mariana Islands, USA
  • Average UV index in September: 12

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are November and December (UV index 9).

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Tinian International Airport, Northern Mariana Islands, USA

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