January weather forecast
Hanalei, HI

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The vast Taro farm fields in the valley of Hanalei, Hawaii, with beautiful cloudy skies and mountains
The vast Taro farm fields in the valley of Hanalei, Hawaii, with beautiful cloudy skies and mountains

Weather in January

The first month of the year in Hanalei, Hawaii, opens with stable and mild weather conditions. It follows closely on the heels of December, offering relatively similar weather features. A bit more sunlight could be enjoyed during the day with an average of 11 hours of daylight. Noticeably, the levels of humidity stand at 75% and temperature ranges move from 69.6°F (20.9°C) to 74.7°F (23.7°C). It makes January an agreeable month, acting as an inviting prelude to the wetter February.

Temperature

As January takes its course, Hanalei's average high-temperature registers at a still warm 74.7°F (23.7°C), closely aligning with the preceding month. During January, the nighttime temperatures in Hanalei align closely with the daytime averages, measuring a pleasant 69.6°F (20.9°C).

Humidity

The least humid month in Hanalei is January, with an average relative humidity of 75%.

Rainfall

In Hanalei, in January, it is raining for 12.5 days, with typically 1.57" (40mm) of accumulated precipitation. In Hanalei, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater in Hanalei, Hawaii.
Note: The allure of a swim in 75.2°F (24°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 Hanalei, the average length of the day in January is 10h and 58min.
On the first day of January, sunrise is at 7:17 am and sunset at 6:05 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:26 pm HST.

Sunshine

In January, the average sunshine is 8.1h.

UV index

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, a daily UV index of 6 turns into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! Sand and water reflections can notably increase the UV radiation intensity.
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Frequently asked questions

What are January temperatures in Hanalei?

In January, in Hanalei, the average high-temperature is 74.7°F (23.7°C), and the average low-temperature is 69.6°F (20.9°C).

What is the least humid month in Hanalei?

The least humid month in Hanalei is January, with an average relative humidity of 75%.

What is the average humidity in January in Hanalei?

The average relative humidity in January is 75%.

How many days does it rain in January in Hanalei?

In Hanalei, in January, during 12.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

When is the ocean coldest in Hanalei?

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

What is the water temperature in January in Hanalei?

In January, the average ocean temperature in Hanalei is 75.2°F (24°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.2°F (24°C) water.

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

The average day length in January in Hanalei is 10h and 58min.

When are sunrise and sunset in January in Hanalei?

In January, on the first day of the month, sunrise is at 7:17 am and sunset at 6:05 pm. On the last day of the month, in Hanalei, Hawaii, sunrise is at 7:16 am and sunset at 6:26 pm HST.

How many hours of sunshine does Hanalei have in January?

The average sunshine duration in January in Hanalei, Hawaii, is 8.1h.

When is the lowest UV index in Hanalei?

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

What is the UV index reading in January in Hanalei?

In January, the average daily maximum UV index in Hanalei, Hawaii, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Hanalei, HI

Average temperature in January - Hanalei, HI
  • Average high temperature in January: 74.7°F

The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).

  • Average low temperature in January: 69.6°F

The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).

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Average pressure in January
Hanalei, HI

Average pressure in January - Hanalei, HI
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).

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Average wind speed in January
Hanalei, HI

Average wind speed in January - Hanalei, HI
  • Average wind speed in January: 10mph

The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).

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Average humidity in January
Hanalei, HI

Average humidity in January - Hanalei, HI
  • Average humidity in January: 75%

The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).

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Average rainfall in January
Hanalei, HI

Average rainfall in January - Hanalei, HI
  • Average rainfall in January: 1.57"

The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").

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Average rainfall days in January
Hanalei, HI

Average rainfall days in January - Hanalei, HI
  • Average rainfall days in January: 12.5 days

The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).

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Average sea temperature in January
Hanalei, HI

Average sea temperature in January - Hanalei, HI
  • Average sea temperature in January: 75°F

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

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

Average daylight in January / Average sunshine in January - Hanalei, HI
  • Average daylight in January: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in January: 8h and 1min

The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

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Average sunshine days in January
Hanalei, HI

Average sunshine days in January - Hanalei, HI
  • Average sunshine days in January: 12.8 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).

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Average UV index in January
Hanalei, HI

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

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

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Average cloud cover in January
Hanalei, HI

Average cloud cover in January - Hanalei, HI
  • Average cloud cover in January: 38

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).

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Average visibility in January
Hanalei, HI

Average visibility in January - Hanalei, 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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Hanalei, Hawaii, USA

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