Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December brings an average high-temperature of a still moderately hot 76.1°F (24.5°C), closely following the temperature pattern of November. The temperature during December nights demonstrates a small drop from the daytime highs, settling to an average of 71.6°F (22°C).Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In December, the rain falls for 18.9 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. In Kahuku, during the entire year, the rain falls for 215.6 days and collects up to 16.38" (416mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 48min of daylight.On the first day of December, sunrise is at 6:54 am and sunset at 5:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:00 pm HST.
Sunshine
The month with the least sunshine is December, with an average of 6h of sunshine.UV index
January through June, 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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 6 in December suggests the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December in Kahuku?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Kahuku have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Kahuku, HI
- Average high temperature in December: 76.1°F
The warmest month (with the highest average high temperature) is September (81.3°F).
The month with the lowest average high temperature is February (74.1°F).
- Average low temperature in December: 71.6°F
The month with the highest average low temperature is September (76.1°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in December
Kahuku, HI
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in December
Kahuku, HI
- Average wind speed in December: 11.2mph
The windiest month (with the highest average wind speed) is July (13.4mph).
The calmest month (with the lowest average wind speed) is January (10.2mph).
Average humidity in December
Kahuku, HI
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January, April, May, September and November (75%).
Average rainfall in December
Kahuku, HI
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is March (2.09").
The driest month (with the least rainfall) is July (0.75").
Average rainfall days in December
Kahuku, HI
- Average rainfall days in December: 18.9 days
The month with the highest number of rainy days is March (21 days).
The month with the least rainy days is January (15.6 days).
Average daylight in December /
Average sunshine in December
Kahuku, HI
- Average daylight in December: 10h and 5min
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 48min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Kahuku, HI
- Average sunshine days in December: 6.1 days
The month with the most sunshine days is January (10.1 days).
The month with the least sunshine days is November (3.5 days).
Average UV index in December
Kahuku, HI
- Average UV index in December: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in December
Kahuku, HI
- Average cloud cover in December: 42
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 39).
Average visibility in December
Kahuku, HI
- Average visibility in December: 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).
Kahuku, Hawaii, USA
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