Weather in January
Temperature
The coldest months are January through March, with an average high-temperature of 84.2°F (29°C).Rainfall
In Tinian International Airport, in January, it is raining for 22 days, with typically 4.25" (108mm) of accumulated precipitation. Throughout the year, there are 247 rainfall days, and 79.21" (2012mm) of precipitation is accumulated.Ocean temperature
The months with the coldest seawater are January through March, with an average ocean temperature of 82°F (27.8°C).Note: For swimming, diving, and various water activities, the temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as highly enjoyable and comfortable for extended durations without any discomfort.
Daylight
The average length of the day in January is 11h and 21min.On the first day of the month, sunrise is at 6:42 am and sunset at 5:58 pm. On the last day of January, sunrise is at 6:46 am and sunset at 6:15 pm ChST.
Sunshine
In January, the average sunshine is 6h.UV index
The average daily maximum UV index in January is 10. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 10 during January translates into the following guidance:
Always be cautious. Skin and eyes can be affected swiftly without protection. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. A sunscreen with at least SPF 30 should be used liberally and reapplied frequently on cloudy days, especially after swimming or an outdoor workout. Be alert! The reflection of water and sand augments UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in January
Tinian International Airport, Northern Mariana Islands, USA
- Average high temperature in January: 84°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 January: 75°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 in January
Tinian International Airport, Northern Mariana Islands, USA
- Average rainfall in January: 4.3"
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 in January
Tinian International Airport, Northern Mariana Islands, USA
- Average rainfall days in January: 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 in January
Tinian International Airport, Northern Mariana Islands, USA
- Average sea temperature in January: 82°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).
Average daylight in January /
Average sunshine in January
Tinian International Airport, Northern Mariana Islands, USA
- Average daylight in January: 11h and 2min
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 January: 6h
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 in January
Tinian International Airport, Northern Mariana Islands, USA
- Average UV index in January: 10
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).
Tinian International Airport, Northern Mariana Islands, USA
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