January weather forecast
Nānākuli, HI

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Weather in January

The weather in Nānākuli starts the year on a mild note, as the region enters the year with comfortable weather conditions. A shift isn't felt between December and January, allowing for steady temperatures and a pleasant start. The temperature highs and lows vary marginally from 70.2°F (21.2°C) to 75.9°F (24.4°C), providing a favorable setting for outdoor activities. The calm and steady trend persists, highlighting January's character as a month of consistency. As February approaches, minor changes occur but they only alter the weather pattern subtly.

Temperature

At the onset of January, Nānākuli records an average high-temperature of a still moderately hot 75.9°F (24.4°C), showing little deviation from the preceding month. Nānākuli maintains an average low-temperature of 70.2°F (21.2°C) throughout January's nights.

Humidity

January, April through June, August through November, with an average relative humidity of 74%, are the least humid months.

Rainfall

In Nānākuli, in January, it is raining for 13.8 days, with typically 0.98" (25mm) of accumulated precipitation. In Nānākuli, during the entire year, the rain falls for 196.3 days and collects up to 14.72" (374mm) of precipitation.

Ocean temperature

In January, the average ocean temperature is 76.8°F (24.9°C).
Note: The allure of a swim in 76.8°F (24.9°C) waters can be influenced by your feelings towards the cold, today's sunshine, the wind's touch, and the ambient warmth. To put it in perspective, Olympic standards demand water temperatures of 77°F (25°C) to 82.4°F (28°C).

Daylight

In Nānākuli, the average length of the day in January is 11h and 1min.
On the first day of the month, sunrise is at 7:10 am and sunset at 6:01 pm. On the last day of January, sunrise is at 7:10 am and sunset at 6:21 pm HST.

Sunshine

The average sunshine in January in Nānākuli is 8.6h.

UV index

January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Nānākuli. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In January, the maximum UV index of 6 suggests this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
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Frequently asked questions

What is the temperature in January in Nānākuli?

The high-temperature, in January, in Nānākuli, records 75.9°F (24.4°C), while the low-temperature is 70.2°F (21.2°C).

What is the least humid month in Nānākuli?

January, April through June, August through November, with an average relative humidity of 74%, are the least humid months in Nānākuli, Hawaii.

What is the average humidity in January in Nānākuli?

The average relative humidity in January in Nānākuli, Hawaii, is 74%.

How many days does it rain in January in Nānākuli?

In Nānākuli, in January, it is raining for 13.8 days, with typically 0.98" (25mm) of accumulated precipitation.

What is the water temperature in January in Nānākuli?

In Nānākuli, Hawaii, in January, the average water temperature is 76.8°F (24.9°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 76.8°F (24.9°C) water may be enjoyable.

What is the average length of the day in January in Nānākuli?

In January, the average day length in Nānākuli, Hawaii, is 11h and 1min.

When is the sunrise / sunset in January in Nānākuli?

On the first day of January in Nānākuli, Hawaii, sunrise is at 7:10 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:21 pm HST.

How long on average sun shines in January in Nānākuli?

In January, the average sunshine duration is 8.6h.

What is the month with the lowest UV index in Nānākuli?

The months with the lowest UV index in Nānākuli are January through May, October through December, with an average maximum UV index of 6.

What is the UV index intensity in January in Nānākuli?

In Nānākuli, Hawaii, the average daily maximum UV index in January is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in January
Nānākuli, HI

Average temperature in January - Nānākuli, HI
  • Average high temperature in January: 75.9°F

The warmest months (with the highest average high temperature) are August and September (81.7°F).
The month with the lowest average high temperature is February (75°F).

  • Average low temperature in January: 70.2°F

The months with the highest average low temperature are August and September (75.9°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure in January
Nānākuli, HI

Average pressure in January - Nānākuli, HI
  • Average pressure in January: 30"Hg

The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed in January
Nānākuli, HI

Average wind speed in January - Nānākuli, HI
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is October (8.8mph).

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Average humidity in January
Nānākuli, HI

Average humidity in January - Nānākuli, HI
  • Average humidity in January: 74%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).

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Average rainfall in January
Nānākuli, HI

Average rainfall in January - Nānākuli, HI
  • Average rainfall in January: 0.98"

The wettest month (with the highest rainfall) is March (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days in January
Nānākuli, HI

Average rainfall days in January - Nānākuli, HI
  • Average rainfall days in January: 13.8 days

The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (13.8 days).

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Average sea temperature in January
Nānākuli, HI

Average sea temperature in January - Nānākuli, HI
  • Average sea temperature in January: 76.9°F

The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

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

Average daylight in January / Average sunshine in January - Nānākuli, 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: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

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Average sunshine days in January
Nānākuli, HI

Average sunshine days in January - Nānākuli, HI
  • Average sunshine days in January: 11.8 days

The month with the most sunshine days is January (11.8 days).
The month with the least sunshine days is November (6.4 days).

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Average UV index in January
Nānākuli, HI

Average UV index in January - Nānākuli, HI
  • Average UV index in January: 6

The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).

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Average cloud cover in January
Nānākuli, HI

Average cloud cover in January - Nānākuli, HI
  • Average cloud cover in January: 32

The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are January and September (Cloud cover 32).

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Average visibility in January
Nānākuli, HI

Average visibility in January - Nānākuli, HI
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Nānākuli, Hawaii, USA

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