January weather forecast
Halawa, HI

The initiation of the year in Halawa, Hawaii introduces a convenient temperature spectrum. The mercury varies from 61°F (16.1°C) at its lowest to a comfortable high of 77°F (25°C). However, rainfall becomes particularly pronounced, with January recording 7.4" (188mm) over 12 days. The season is also marked by a comparatively low daylight duration. Despite this, sunshine and UV index levels dictate the use of sunscreen, even in the middle of winter.

Temperature

The lowest level of Halawa's temperatures is noted during January through March, averaging a high-temperature of 77°F (25°C).

Rainfall

The month with the most rainfall is January, when the rain falls for 12 days and typically aggregates up to 7.36" (187mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.
Note: Imagine a swim in 75.2°F (24°C) waters. How you'd feel depends on your cold sensitivity, the sun's rays, the caress of the wind, and the warmth enveloping you. Comparatively, Olympic swimmers train in waters between 77°F (25°C) and 82.4°F (28°C).

Daylight

The average length of the day in January is 11h and 1min.
On the first day of January, sunrise is at 7:04 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:16 pm HST.

Sunshine

The months with the least sunshine are January, February, November and December, with an average of 7h of sunshine.

UV index

In Halawa, the average daily maximum UV index in January is 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 7 during January translates into these guidelines:
Fend off overexposure. Sun protection is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Alert! UV radiation becomes sharper due to reflections from sand and water.