January weather forecastHalawa, HI

January

Weather in January

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.

Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Halawa's coldest months, January through March, record an average high-temperature of 77°F (25°C).

The high-temperature, in January, in Halawa, is 77°F (25°C), while the low-temperature averages to 60.8°F (16°C).

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.

In Halawa, during January, the rain falls for 12 days and regularly aggregates up to 7.36" (187mm) of precipitation.

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.

In January, the average ocean temperature is 75.2°F (24°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.2°F (24°C).

The average day length 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.

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

The average sunshine duration in January is 7h.

In Halawa, Hawaii, the average daily maximum UV index in January is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

79°F

77°F

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in January
Halawa, HI

Average high temperature in January: 77°F

The warmest months (with the highest average high temperature) are July, August, September and October (82°F).
The months with the lowest average high temperature are January, February and March (77°F).

Average low temperature in January: 61°F

The month with the highest average low temperature is August (68°F).
The coldest months (with the lowest average low temperature) are January, February and March (61°F).

Average rainfall in January
Halawa, HI

Average rainfall in January: 7.4"

The wettest month (with the highest rainfall) is January (7.4").
The driest month (with the least rainfall) is June (1.9").

Average rainfall days in January
Halawa, HI

Average rainfall days in January: 12 days

The months with the highest number of rainy days are January, March, April and December (12 days).
The months with the least rainy days are June and September (7 days).

Average sea temperature in January
Halawa, HI

Average sea temperature in January: 75°F

The best month for swimming (with the highest average sea temperature) is September (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

Average daylight in January /
Average sunshine in January
Halawa, HI

Average daylight in January: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

Average sunshine in January: 7h

The months with the most sunshine are May, June, July, August and September (Average sunshine: 9h).
The months with the least sunshine are January, February, November and December (Average sunshine: 7h).