December weather forecast
Kahuku, HI

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Weather in December

The first month of the winter, December, is also a moderately hot month in Kahuku, Hawaii, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 71.6°F (22°C).

Temperature

The average high-temperature is a still moderately hot 76.1°F (24.5°C) in December, hardly different from the 78.3°F (25.7°C) recorded in November. The nighttime temperature in Kahuku, Hawaii, in December experiences a minor dip, averaging an agreeable 71.6°F (22°C).

Humidity

With an average relative humidity of 77%, December is the most humid month in Kahuku, Hawaii.

Rainfall

In Kahuku, in December, during 18.9 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 215.6 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

Daylight

With an average of 10h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:54 am and sunset at 5:48 pm. On the last day of December, sunrise is at 7:10 am and sunset at 6:00 pm HST.

Sunshine

December has the least sunshine of the year, with an average of 6h of sunshine.

UV index

The months with the lowest UV index are January through June, August, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What are the temperatures in Kahuku in December?

The high-temperature, in December, in Kahuku, records 76.1°F (24.5°C), while the low-temperature is 71.6°F (22°C). In October, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the most humid month in Kahuku?

December is the most humid month, with an average relative humidity of 77%.

What is the average humidity in December in Kahuku?

In December, the average relative humidity is 77%.

How much does it rain in Kahuku in December?

In Kahuku, during December, the rain falls for 18.9 days and regularly aggregates up to 1.69" (43mm) of precipitation.

What is the month with the shortest days in Kahuku?

With an average of 10h and 48min of daylight, December has the shortest days of the year in Kahuku.

How many hours of daylight does Kahuku have in December?

In December, the average day length is 10h and 50min.

When is the sunrise / sunset in December in Kahuku?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 5:48 pm. On the last day of the month, in Kahuku, Hawaii, sunrise is at 7:10 am and sunset at 6:00 pm HST.

What is the month with the least sunshine in Kahuku?

December has the least sunshine of the year in Kahuku, Hawaii, with an average of 6h of sunshine.

How long on average sun shines in December in Kahuku?

The average sunshine duration in December in Kahuku is 6h.

When is the lowest UV index in Kahuku?

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

What is the UV index intensity in December in Kahuku?

In Kahuku, Hawaii, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Kahuku, HI

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).

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Average pressure in December
Kahuku, HI

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).

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Average wind speed in December
Kahuku, HI

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).

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Average humidity in December
Kahuku, HI

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%).

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Average rainfall in December
Kahuku, HI

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").

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Average rainfall days in December
Kahuku, HI

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).

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Average daylight in December /
Average sunshine in December
Kahuku, HI

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).

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Average sunshine days in December
Kahuku, HI

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).

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Average UV index in December
Kahuku, HI

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).

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Average cloud cover in December
Kahuku, HI

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).

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Average visibility in December
Kahuku, HI

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).

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Kahuku, Hawaii, USA

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