Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With the advent of January, Hanalei experiences an average high-temperature of a still moderately hot 74.7°F (23.7°C), mirroring a close resemblance to the previous month. Hanalei records a slight downturn to an average an agreeable 69.6°F (20.9°C) during the nights of January.Humidity
January is the least humid month, with an average relative humidity of 75%.Rainfall
In Hanalei, in January, during 12.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.2°F (24°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)
Daylight
The average length of the day in January is 10h and 58min.On the first day of the month, sunrise is at 7:17 am and sunset at 6:05 pm. On the last day of January, sunrise is at 7:16 am and sunset at 6:26 pm HST.
Sunshine
In January, the average sunshine is 8.1h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. 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: The maximum UV index, 6 during January, leads to the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the least humid month?
What is the average humidity in January?
How many days does it rain in January?
What are the months with the coldest ocean in Hanalei?
What is the ocean temperature in January?
How many hours of daylight does Hanalei have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Hanalei have in January?
When is the lowest UV index?
What is the UV index intensity in January?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
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).
Hanalei, Hawaii, USA
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