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, Nānākuli's high-temperatures adjust to a still moderately hot 75.9°F (24.4°C), closely aligning with the preceding month. In Nānākuli, a slight decrease from the daytime peak is noted during the month of January, with an average low-temperature of 70.2°F (21.2°C).Humidity
The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.Rainfall
In Nānākuli, in January, during 13.8 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. 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 Nānākuli, in January, the average water temperature is 76.8°F (24.9°C).Note: If cold is not your friend, swimming at 76.8°F (24.9°C) might be daunting. But the right mix of sunshine, wind, and external temperature can make a difference. Although wetsuits are not essential, they can enhance the swimming experience.
Daylight
In January, the average length of the day in Nānākuli 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 is 8.6h.UV index
The months with the lowest UV index are January through May, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 6 in January leads to these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature?
What are the least humid months in Nānākuli?
What is the average humidity in January?
How much does it rain in January?
What is the water temperature in January?
How many hours of daylight does Nānākuli have in January?
When are sunrise and sunset in January in Nānākuli?
How many hours of sunshine does Nānākuli have in January?
What is the month with the lowest UV index?
What is the UV index reading in January in Nānākuli?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
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).
Nānākuli, Hawaii, USA
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