December weather forecastKaunakakai, HI

December

Weather in December

In December, Kaunakakai witnesses the highest rainfall of the year with an average precipitation of 1.22" (31mm). Yet, Hawaii's pleasant winter weather persists with mild temperatures providing a heartening respite from more harsh winter climates elsewhere. Wind speeds increase to 12mph (19.3km/h), generating a refreshing breeze that complements the fine weather. Even as December signifies the year's end, Hawaii continues to provide a year-round tropical haven for residents and tourists. The gentle, winter weather in this month ensures a welcoming atmosphere characterized by festive spirit and mild outdoor conditions.

Temperature

Kaunakakai signifies an average high-temperature of a still warm 75.9°F (24.4°C) in December, closely mirroring the 78.1°F (25.6°C) of November. Kaunakakai records a slight downturn in temperature to an average of 73.6°F (23.1°C) during December nights.

Humidity

In Kaunakakai, the average relative humidity in December is 75%.

Rainfall

In Kaunakakai, during December, the rain falls for 11.4 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Kaunakakai, during the entire year, the rain falls for 126.4 days and collects up to 9.84" (250mm) of precipitation.

Ocean temperature

In December, the average ocean temperature in Kaunakakai is 76.8°F (24.9°C).
Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 76.8°F (24.9°C) waters might be just right. Remember, Olympic swimmers are used to waters between 77°F (25°C) and 82.4°F (28°C).

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 6:49 am and sunset at 5:45 pm. On the last day of December, sunrise is at 7:05 am and sunset at 5:57 pm HST.

Sunshine

December has the least sunshine of the year in Kaunakakai, with an average of 6.8h of sunshine.

UV index

The months with the lowest UV index in Kaunakakai are January through May, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take heed! Reflections of sand and water make the Sun's UV rays stronger.

Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Kaunakakai, records 75.9°F (24.4°C), while the low-temperature is 73.6°F (23.1°C).

The average relative humidity in December is 75%.

In December, in Kaunakakai, the rain falls for 11.4 days. Throughout December, 1.22" (31mm) of precipitation is accumulated.

In Kaunakakai, Hawaii, in December, the average water temperature is 76.8°F (24.9°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 76.8°F (24.9°C).

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

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

On the first day of December in Kaunakakai, Hawaii, sunrise is at 6:49 am and sunset at 5:45 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:57 pm HST.

December has the least sunshine of the year in Kaunakakai, Hawaii, with an average of 6.8h of sunshine.

In December, the average sunshine duration in Kaunakakai is 6.8h.

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

In Kaunakakai, Hawaii, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

78.1°F

75.9°F

75.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.4mph

12.6mph

11.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

10.6

11.4

10.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

10.8

12.5

15.3

Average UV index

Average cloud cover

27%

26%

Average visibility

6mi

Average temperature in December
Kaunakakai, HI

Average high temperature in December: 75.9°F

The warmest months (with the highest average high temperature) are August and September (80.2°F).
The month with the lowest average high temperature is February (74.3°F).

Average low temperature in December: 73.6°F

The months with the highest average low temperature are September and October (77.2°F).
The coldest month (with the lowest average low temperature) is March (71.2°F).

Average pressure in December
Kaunakakai, HI

Average pressure in December: 29.99"Hg

The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

Average wind speed in December
Kaunakakai, HI

Average wind speed in December: 12mph

The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.8mph).

Average humidity in December
Kaunakakai, HI

Average humidity in December: 75%

The months with the highest relative humidity are April, May, June, July and August (76%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in December
Kaunakakai, HI

Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is March (1.3").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in December
Kaunakakai, HI

Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is July (8.5 days).

Average sea temperature in December
Kaunakakai, HI

Average sea temperature in December: 76.8°F

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.6°F).

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

Average daylight in December: 10h and 54min

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 48min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in December
Kaunakakai, HI

Average sunshine days in December: 12.5 days

The month with the most sunshine days is July (16.1 days).
The month with the least sunshine days is November (10.8 days).

Average UV index in December
Kaunakakai, HI

Average UV index in December: 6

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

Average cloud cover in December
Kaunakakai, HI

Average cloud cover in December: 27

The months with the most cloud cover are February and March (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 23).

Average visibility in December
Kaunakakai, 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).