Climate and monthly weather forecastTinian International Airport, Northern Mariana Islands, USA
Climate and monthly weather forecast
The climate of Tinian International Airport
Tinian International Airport, located in the Northern Mariana Islands, USA, is under the influence of a Köppen climate classification type known as Tropical rainforest climate. This climate type is characterized by substantial rainfall throughout the year, coupled with consistently high temperatures.Throughout the year, temperatures at Tinian International Airport stay within a comfortable range. Low temperatures vary from 73°F (22.8°C) to 77°F (25°C), while high temperatures are consistently between 84°F (28.9°C) to 88°F (31.1°C). These figures indicate a limited temperature fluctuation throughout the annual cycle, providing a generally stable and predictable weather pattern.
Rainfall in this region is significant and distributed throughout the year. The airport records an average rainfall between 2.9" (74mm) up to 12.8" (325mm) per month. Somewhat predictably, rainfall is more intense during the latter half of the year, peaking in September with 12.8" (325mm). Sea temperatures also hold steady, hovering around 82°F (27.8°C) to 85.4°F (29.7°C), creating a favorable environment for water-based activities all year round.
The best time to visit Tinian International Airport
The best time to visit Tinian International Airport depends heavily on the traveler's preference for weather conditions. However, considering all climate parameters, March to May appears to be the most pleasant period. During these months, temperatures hover between a comforting 73°F (22.8°C) to 86°F (30°C). Rainfall is relatively lower with average rain falling between 3.2" (81mm) to 4" (102mm). Furthermore, the average daylight extends up to 12.8 hours per day with 7 hours of sunshine, and sea temperatures are agreeably warm, averaging from 82.8°F (28.2°C) to 83.9°F (28.8°C).The worst time to visit Tinian International Airport
The most challenging time to visit Tinian International Airport would be from July to September when the island endures its highest rainfall values. Rainfall within these months averages from 9" (229mm) to a high of 12.8" (325mm), considerably higher than the rest of the year. Coupled with high UV index values of 12 and high temperatures averaging at 88°F (31.1°C), travellers might find the climate quite uncomfortable.Spring weather in Tinian International Airport
Spring weather at Tinian International Airport, from March to May, offers quite delightful conditions. Average high temperatures are between 84°F (28.9°C) and 86°F (30°C) while low temperatures range from 73°F (22.8°C) to 77°F (25°C). Rainfall is comparatively lower than the rest of the year, with averages from 3.2" (81mm) to 4" (102mm) over 18 to 20 days. On top of this, there's fairly generous daylight ranging from 12.1 hours to 12.8 hours, supplemented by around 7 hours of daily sunshine.Summer weather in Tinian International Airport
Summer in Tinian International Airport spans from June to August. This period experiences high temperatures from 86°F (30°C) to 88°F (31.1°C), and low temperatures sustaining at 77°F (25°C). Rainfall begins to intensify in these months, escalating from an average of 5" (127mm) in June to a high of 11.1" (282mm) in August. Despite the increasing rainfall, sea temperatures rise slightly to between 84.7°F (29.3°C) and 85.4°F (29.7°C) favorable for water activities.Autumn weather in Tinian International Airport
Autumn, occurring between September and November, is the wettest season at Tinian International Airport. Average rainfall heightens to a peak of 12.8" (325mm) in September before declining gradually to 7.1" (180mm) in November. Temperatures exhibit minimal fluctuations, with high temperatures from 88°F (31.1°C) to 86°F (30°C) and low temperatures consistently at 77°F (25°C). Sea temperatures during these months are warm and inviting, remaining between 84.8°F (29.3°C) and 84.2°F (29°C).Winter weather in Tinian International Airport
Winter months, December to February, at Tinian International Airport are relatively mild. Despite the season, high temperatures remain steady from 84°F (28.9°C) to 86°F (30°C), and the lowest temperature doesn't go below 73°F (22.8°C). December to January records a slight increase in rainfall, from 4.8" (122mm) in December to 4.3" (109mm) in February. However, these quantities are substantially lower than the peak rain months. Average sea temperatures during the winter are quite inviting, maintaining between 82°F (27.8°C) to 83°F (28.3°C).Weather in January
The start of the year in Tinian International Airport, Northern Mariana Islands, sees a consistent weather pattern with similar conditions to those of December. With highs of 84°F (28.9°C) and lows down to 75°F (23.9°C), the region experiences a moderate climate. Weather in January »Weather in February
Notable changes are minimal as we transition from January to February. Similar temperatures prevail, creating a mix of mild and warm conditions. The region experiences 2.9" (74mm) of rainfall scattered over 19 days, a slight decrease compared to the previous month. Weather in February »Weather in March
March manifests warmer temperatures than its preceding months, offering pleasant weather conditions. The weather sees a light increase in rainfall, with an average of 3.2" (81mm) over 20 days. Despite the rise in rainfall, the sun brightens the region for slightly longer hours in the day. Weather in March »Weather in April
April delivers a gentle shift towards slightly warmer days, maintaining weather consistency witnessed through the first quarter. Average rainfall increases to 4" (102mm) over 18 days, a small uptick from March. A noteworthy attribute is that similar temperatures persist in the sea. Weather in April »Weather in May
May signifies the start of slightly warmer temperatures, marking the progression into the summer months. Rainfall persists at moderate levels averaging 3.7" (94mm) across 20 days. Regardless of the dispersed showers, the sunshine hours remain stable. Weather in May »Weather in June
Continuing the trend, June brings marginally warmer weather conditions in comparison to May. An increase to 5" (127mm) of rainfall, spread across 19 days, is recorded this month. Longer daylight hours, combined with abundant sunshine, support everyday outdoor events. Weather in June »Weather in July
In comparison to the preceding months, July is marked by consistent hot temperatures. However, the month records a significant jump in rainfall with a substantial 9" (229mm) over 21 days. Despite the increased rainfall, daylight hours and sunshine remain on the higher side. Weather in July »Weather in August
As summer continues in full swing, August sees constant high temperatures, similar to July. An observable surge is present in the rainfall, registering at an average of 11.1" (282mm) over 23 days. The daylight hours indicate a slight reduction, counterbalanced by persistent sunshine durations. Weather in August »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. Weather in September »Weather in October
October sees a drop in temperatures, providing respite from the summer heat. With a significant rainfall of 11.2" (284mm) over 22 days, the city maintains its tropical climate characteristics. The daylight hours are reduced slightly, resulting in a mild decrease in sunshine duration. Weather in October »Weather in November
November marks a transition towards cooler weather, carrying forward the rainfall trend from October with a lower amount measuring 7.1" (180mm) over 21 days. With the decrease in temperatures, the daylight hours are subtly reduced. Weather in November »Weather in December
December witnesses similar climatic conditions as November, setting the ground for cooler weather and shortening daylight hours. The month forecasts rainfall of 4.8" (122mm) over 22 days, providing the region with a moist and tranquil atmosphere. Weather in December »Updated: Jul 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Tinian International Airport, the coldest months are January through March, registering an average high-temperature of 84.2°F (29°C).
In Tinian International Airport, during the entire year, the rain falls for 247 days and collects up to 79.21" (2012mm) of precipitation.
January through March, with an average ocean temperature of 82°F (27.8°C), are months with the coldest seawater.
The month with the least rainfall is February, when the rain falls for 19 days and typically collects 2.91" (74mm) of precipitation.
February through September, with an average maximum UV index of 12, are months with the highest UV index.
March through June, with an average of 7h of sunshine, are months with the most sunshine.
June through October, with an average high-temperature of 87.8°F (31°C), are warmest months.
The month with the longest days is June, with an average of 13h and 0min of daylight.
The month with the warmest seawater is July, with an average ocean temperature of 85.5°F (29.7°C).
The months with the least sunshine are August through December, with an average of 5h of sunshine.
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.
November and December, with an average maximum UV index of 9, are months with the lowest UV index.
December has the shortest days of the year, with an average of 11h and 18min of daylight.
Tinian International Airport does not utilize Daylight Saving Time (DST). ChST timezone is used over the entire year.
Average temperature
Tinian International Airport, Northern Mariana Islands, USA
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).
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).
Average rainfall
Tinian International Airport, Northern Mariana Islands, USA
The wettest month (with the highest rainfall) is September (12.8").
The driest month (with the least rainfall) is February (2.9").
Average rainfall days
Tinian International Airport, Northern Mariana Islands, USA
- Average rainfall days in January:
22 days - Average rainfall days in February:
19 days - Average rainfall days in March:
20 days - Average rainfall days in April:
18 days - Average rainfall days in May:
20 days - Average rainfall days in June:
19 days
- Average rainfall days in July:
21 days - Average rainfall days in August:
23 days - Average rainfall days in September:
20 days - Average rainfall days in October:
22 days - Average rainfall days in November:
21 days - Average rainfall days in December:
22 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).
Average sea temperature
Tinian International Airport, Northern Mariana Islands, USA
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).
Average daylight / Average sunshine
Tinian International Airport, Northern Mariana Islands, USA
- Average daylight in January:
11h and 24min - Average daylight in February:
11h and 42min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 30min - Average daylight in May:
12h and 48min - Average daylight in June:
13h and 0min
- Average daylight in July:
12h and 54min - Average daylight in August:
12h and 36min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 48min - Average daylight in November:
11h and 24min - Average daylight in December:
11h and 18min
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).
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).
Average UV index
Tinian International Airport, Northern Mariana Islands, USA
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).
