December weather forecast
Kapalua, HI

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Weather in December

December in Kapalua Hawaii brings about an overall drop in temperature, and heralds the height of the winter season. This month sees a significant increase in rainfall, jumping from 0.47" (12mm) in November to 1.02" (26mm) in December. Furthermore, the number of daylight hours reduces and sunshine duration reaches its lowest for the year. Sea temperatures also start to recede, reflecting the cooler climatic conditions. In unison with the changing climate, the wind speeds exhibit a slight increase while maintaining trails of the preceding month.

Temperature

December commences in Kapalua, Hawaii, with an average high-temperature of a still moderately hot 75.4°F (24.1°C), showing little deviation from November's 77.5°F (25.3°C). An average low-temperature of 72.7°F (22.6°C) is witnessed throughout the month of December, a mere drop from the daytime peak.

Humidity

The average relative humidity in December in Kapalua is 76%.

Rainfall

In Kapalua, in December, it is raining for 10.5 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 112.6 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature is 77°F (25°C).
Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

The month with the shortest days is December, with an average of 10h and 54min of daylight.
On the first day of the month, sunrise is at 6:47 am and sunset at 5:44 pm. On the last day of December, sunrise is at 7:03 am and sunset at 5:56 pm HST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year in Kapalua.

UV index

January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Heads up! UV intensity is amplified by reflections from water and sand.
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Frequently asked questions

What are December temperatures in Kapalua?

Kapalua in December has an average high-temperature of 75.4°F (24.1°C) and an average low-temperature of 72.7°F (22.6°C).

What is the average humidity in December in Kapalua?

In Kapalua, Hawaii, the average relative humidity in December is 76%.

How much does it rain in Kapalua in December?

In Kapalua, during December, the rain falls for 10.5 days and regularly aggregates up to 1.02" (26mm) of precipitation.

What is the ocean temperature in December in Kapalua?

In Kapalua, in December, the average water temperature is 77°F (25°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the shortest days in Kapalua?

December has the shortest days of the year in Kapalua, Hawaii, with an average of 10h and 54min of daylight.

What is the average length of the day in December in Kapalua?

In Kapalua, Hawaii, the average day length in December is 10h and 53min.

What time are sunrise and sunset in December in Kapalua?

On the first day of December in Kapalua, sunrise is at 6:47 am and sunset at 5:44 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:56 pm HST.

What is the month with the least sunshine in Kapalua?

December has the least sunshine of the year in Kapalua, Hawaii, with an average of 6.7h of sunshine.

How long on average sun shines in December in Kapalua?

In Kapalua, the average sunshine duration in December is 6.7h.

When is the lowest UV index in Kapalua?

January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Kapalua.

What is the UV index reading in December in Kapalua?

The average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from 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 December
Kapalua, HI

Average temperature in December - Kapalua, HI
  • Average high temperature in December: 75.4°F

The warmest month (with the highest average high temperature) is September (79.7°F).
The month with the lowest average high temperature is February (73.9°F).

  • Average low temperature in December: 72.7°F

The months with the highest average low temperature are August and October (76.5°F).
The coldest month (with the lowest average low temperature) is March (70.7°F).

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Average pressure in December
Kapalua, HI

Average pressure in December - Kapalua, HI
  • Average pressure in December: 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).

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Average wind speed in December
Kapalua, HI

Average wind speed in December - Kapalua, HI
  • Average wind speed in December: 11.9mph

The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).

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Average humidity in December
Kapalua, HI

Average humidity in December - Kapalua, HI
  • Average humidity in December: 76%

The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January, February, March, September and November (75%).

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Average rainfall in December
Kapalua, HI

Average rainfall in December - Kapalua, HI
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is March (1.1").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in December
Kapalua, HI

Average rainfall days in December - Kapalua, HI
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is November (7.7 days).

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Average sea temperature in December
Kapalua, HI

Average sea temperature in December - Kapalua, HI
  • Average sea temperature in December: 77°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 December /
Average sunshine in December
Kapalua, HI

Average daylight in December / Average sunshine in December - Kapalua, 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 54min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in December
Kapalua, HI

Average sunshine days in December - Kapalua, HI
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is March (12.6 days).

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Average UV index in December
Kapalua, HI

Average UV index in December - Kapalua, HI
  • Average UV index in December: 6

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

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Average cloud cover in December
Kapalua, HI

Average cloud cover in December - Kapalua, HI
  • Average cloud cover in December: 29

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is September (Cloud cover 25).

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Average visibility in December
Kapalua, HI

Average visibility in December - Kapalua, 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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Kapalua, Hawaii, USA

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