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 sea temperature 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
During December, the average high-temperature in Hanalei is a still moderately hot 75.4°F (24.1°C), maintaining a close resemblance to that of the preceding month. Night temperatures in December in Hanalei exhibit a subtle decrease, settling at an average of 71.8°F (22.1°C).Humidity
June through August, October and December, with an average relative humidity of 77%, are the most humid months in Hanalei.Rainfall
In Hanalei, in December, it is raining for 18.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, in Hanalei, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
In Hanalei, the average seawater temperature in December is 77°F (25°C).Note: Water activities in surface temperatures between 77°F (25°C) and 84.2°F (29°C) are seen as exceptional and extremely agreeable for lengthened time spans.
Daylight
December has the shortest days of the year, with an average of 10h and 48min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 5:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:05 pm HST.
Sunshine
The average sunshine in December is 6.4h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Hanalei, Hawaii. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 during December translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Hanalei in December?
What are the most humid months in Hanalei?
What is the average humidity in December in Hanalei?
How much does it rain in Hanalei in December?
What is the water temperature in December in Hanalei?
What is the month with the shortest days in Hanalei?
What is the average length of the day in December in Hanalei?
What time are sunrise and sunset in December in Hanalei?
How many hours of sunshine does Hanalei have in December?
What are the months with the lowest UV index in Hanalei?
What is the UV index intensity in December in Hanalei?
Average temperature in December
Hanalei, HI
- Average high temperature in December: 75.4°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in December: 71.8°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in December
Hanalei, HI
- Average pressure in December: 30.01"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in December
Hanalei, HI
- Average wind speed in December: 11.2mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in December
Hanalei, HI
- Average humidity in December: 77%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in December
Hanalei, HI
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in December
Hanalei, HI
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in December
Hanalei, 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).
Average daylight in December /
Average sunshine in December
Hanalei, HI
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in December
Hanalei, HI
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in December
Hanalei, HI
- Average UV index in December: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in December
Hanalei, 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 38).
Average visibility in December
Hanalei, 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).
Hanalei, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location
