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
Honolulu, Hawaii, marks the onset of December with an average high-temperature of a still warm 76.5°F (24.7°C), a subtle shift from November's 78.8°F (26°C). In December, a low-temperature average of 71.4°F (21.9°C) is characteristic of Honolulu, marking a minor shift from daytime temperatures.Humidity
February and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In Honolulu, in December, during 15.7 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, in Honolulu, there are 197.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.Ocean temperature
In December, the average ocean temperature in Honolulu is 77°F (25°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.
Daylight
With an average of 10h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:53 am and sunset at 5:48 pm. On the last day of December, in Honolulu, sunrise is at 7:08 am and sunset at 6:00 pm HST.
Sunshine
November and December, with an average of 6.5h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 6 during December translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. 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. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Alert! Sand and water increase UV exposure due to their reflective properties.
Frequently asked questions
What is the usual temperature for Honolulu in December?
What is the most humid month in Honolulu?
What is the average humidity in December in Honolulu?
How many days does it rain in December in Honolulu?
What is the ocean temperature in December in Honolulu?
What is the month with the shortest days in Honolulu?
What is the average length of the day in December in Honolulu?
When is the sunrise / sunset in December in Honolulu?
What are the months with the least sunshine in Honolulu?
How long on average sun shines in December in Honolulu?
What are the months with the lowest UV index in Honolulu?
What is the UV index intensity in December in Honolulu?
Average temperature in December
Honolulu, HI
- Average high temperature in December: 76.5°F
The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).
- Average low temperature in December: 71.4°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in December
Honolulu, 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).
Average wind speed in December
Honolulu, HI
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in December
Honolulu, HI
- Average humidity in December: 76%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).
Average rainfall in December
Honolulu, HI
- Average rainfall in December: 1.54"
The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in December
Honolulu, HI
- Average rainfall days in December: 15.7 days
The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).
Average sea temperature in December
Honolulu, HI
- Average sea temperature in December: 77°F
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in December /
Average sunshine in December
Honolulu, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days in December
Honolulu, HI
- Average sunshine days in December: 9.6 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).
Average UV index in December
Honolulu, HI
- Average UV index in December: 6
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover in December
Honolulu, HI
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).
Average visibility in December
Honolulu, 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).
Honolulu, Hawaii, USA
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